/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/nzb-file-subst.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9b7772ad7705253c1305067fc38dc9bc7271fbe3-9b7772a [2021-04-15 03:00:26,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-15 03:00:26,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-15 03:00:26,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-15 03:00:26,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-15 03:00:26,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-15 03:00:26,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-15 03:00:26,587 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-04-15 03:00:26,627 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-15 03:00:26,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-15 03:00:26,628 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-04-15 03:00:26,628 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-04-15 03:00:26,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-15 03:00:26,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-15 03:00:26,632 INFO L138 SettingsManager]: * Use SBE=true [2021-04-15 03:00:26,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-15 03:00:26,632 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-15 03:00:26,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-15 03:00:26,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-15 03:00:26,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-15 03:00:26,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-15 03:00:26,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-15 03:00:26,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-15 03:00:26,634 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-15 03:00:26,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-15 03:00:26,634 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-15 03:00:26,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-15 03:00:26,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-15 03:00:26,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-15 03:00:26,635 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-15 03:00:26,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-15 03:00:26,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 03:00:26,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-15 03:00:26,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-15 03:00:26,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-15 03:00:26,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-15 03:00:26,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-15 03:00:26,636 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-04-15 03:00:26,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-15 03:00:26,636 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-15 03:00:27,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-15 03:00:27,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-15 03:00:27,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-15 03:00:27,078 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-04-15 03:00:27,080 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-04-15 03:00:27,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/nzb-file-subst.wvr.bpl [2021-04-15 03:00:27,081 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/nzb-file-subst.wvr.bpl' [2021-04-15 03:00:27,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-15 03:00:27,133 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-15 03:00:27,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-15 03:00:27,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-15 03:00:27,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-15 03:00:27,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 03:00:27" (1/1) ... [2021-04-15 03:00:27,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 03:00:27" (1/1) ... [2021-04-15 03:00:27,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-15 03:00:27,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-15 03:00:27,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-15 03:00:27,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-15 03:00:27,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 03:00:27" (1/1) ... [2021-04-15 03:00:27,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 03:00:27" (1/1) ... [2021-04-15 03:00:27,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 03:00:27" (1/1) ... [2021-04-15 03:00:27,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 03:00:27" (1/1) ... [2021-04-15 03:00:27,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 03:00:27" (1/1) ... [2021-04-15 03:00:27,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 03:00:27" (1/1) ... [2021-04-15 03:00:27,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 03:00:27" (1/1) ... [2021-04-15 03:00:27,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-15 03:00:27,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-15 03:00:27,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-15 03:00:27,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-15 03:00:27,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 03:00:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 03:00:27,262 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-04-15 03:00:27,263 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-04-15 03:00:27,263 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-04-15 03:00:27,263 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-04-15 03:00:27,263 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-04-15 03:00:27,263 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-04-15 03:00:27,264 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-04-15 03:00:27,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-15 03:00:27,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-15 03:00:27,264 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-04-15 03:00:27,264 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-04-15 03:00:27,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-04-15 03:00:27,265 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-15 03:00:27,792 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-15 03:00:27,792 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-04-15 03:00:27,793 INFO L202 PluginConnector]: Adding new model nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 03:00:27 BoogieIcfgContainer [2021-04-15 03:00:27,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-15 03:00:27,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-15 03:00:27,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-15 03:00:27,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-15 03:00:27,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 03:00:27" (1/2) ... [2021-04-15 03:00:27,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37acf936 and model type nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 03:00:27, skipping insertion in model container [2021-04-15 03:00:27,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 03:00:27" (2/2) ... [2021-04-15 03:00:27,799 INFO L111 eAbstractionObserver]: Analyzing ICFG nzb-file-subst.wvr.bpl [2021-04-15 03:00:27,803 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-04-15 03:00:27,803 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-15 03:00:27,809 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-15 03:00:27,810 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-15 03:00:27,860 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-04-15 03:00:27,873 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-15 03:00:27,905 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-15 03:00:27,905 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-15 03:00:27,905 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-15 03:00:27,906 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-15 03:00:27,906 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-15 03:00:27,907 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-15 03:00:27,907 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-15 03:00:27,907 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-15 03:00:27,917 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 28 transitions, 80 flow [2021-04-15 03:00:27,939 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 110 states, 108 states have (on average 3.4814814814814814) internal successors, (376), 109 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:27,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 108 states have (on average 3.4814814814814814) internal successors, (376), 109 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:27,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-04-15 03:00:27,951 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:27,951 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:27,952 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:27,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:27,956 INFO L82 PathProgramCache]: Analyzing trace with hash 454115418, now seen corresponding path program 1 times [2021-04-15 03:00:27,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:27,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950512332] [2021-04-15 03:00:27,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:28,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:28,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950512332] [2021-04-15 03:00:28,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:00:28,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-15 03:00:28,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68868903] [2021-04-15 03:00:28,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-15 03:00:28,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:28,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-15 03:00:28,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-15 03:00:28,435 INFO L87 Difference]: Start difference. First operand has 110 states, 108 states have (on average 3.4814814814814814) internal successors, (376), 109 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:28,597 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2021-04-15 03:00:28,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:28,807 INFO L93 Difference]: Finished difference Result 265 states and 821 transitions. [2021-04-15 03:00:28,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-15 03:00:28,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-04-15 03:00:28,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:28,829 INFO L225 Difference]: With dead ends: 265 [2021-04-15 03:00:28,829 INFO L226 Difference]: Without dead ends: 250 [2021-04-15 03:00:28,831 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 340.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-04-15 03:00:28,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-04-15 03:00:28,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 126. [2021-04-15 03:00:28,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 3.368) internal successors, (421), 125 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:28,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 421 transitions. [2021-04-15 03:00:28,887 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 421 transitions. Word has length 14 [2021-04-15 03:00:28,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:28,888 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 421 transitions. [2021-04-15 03:00:28,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:28,889 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 421 transitions. [2021-04-15 03:00:28,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-04-15 03:00:28,890 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:28,891 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:28,891 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-15 03:00:28,891 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:28,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:28,892 INFO L82 PathProgramCache]: Analyzing trace with hash -947352844, now seen corresponding path program 2 times [2021-04-15 03:00:28,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:28,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830688871] [2021-04-15 03:00:28,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:29,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:29,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830688871] [2021-04-15 03:00:29,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:00:29,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-15 03:00:29,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036911329] [2021-04-15 03:00:29,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-15 03:00:29,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:29,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-15 03:00:29,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-15 03:00:29,052 INFO L87 Difference]: Start difference. First operand 126 states and 421 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:29,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:29,258 INFO L93 Difference]: Finished difference Result 278 states and 851 transitions. [2021-04-15 03:00:29,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-15 03:00:29,258 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-04-15 03:00:29,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:29,262 INFO L225 Difference]: With dead ends: 278 [2021-04-15 03:00:29,263 INFO L226 Difference]: Without dead ends: 263 [2021-04-15 03:00:29,263 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 173.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-04-15 03:00:29,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-04-15 03:00:29,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 132. [2021-04-15 03:00:29,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 3.312977099236641) internal successors, (434), 131 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:29,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 434 transitions. [2021-04-15 03:00:29,297 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 434 transitions. Word has length 14 [2021-04-15 03:00:29,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:29,297 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 434 transitions. [2021-04-15 03:00:29,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:29,298 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 434 transitions. [2021-04-15 03:00:29,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-04-15 03:00:29,299 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:29,299 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:29,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-15 03:00:29,300 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:29,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:29,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1857974612, now seen corresponding path program 3 times [2021-04-15 03:00:29,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:29,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505590593] [2021-04-15 03:00:29,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:29,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:29,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505590593] [2021-04-15 03:00:29,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:00:29,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-15 03:00:29,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773247841] [2021-04-15 03:00:29,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-15 03:00:29,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:29,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-15 03:00:29,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-15 03:00:29,557 INFO L87 Difference]: Start difference. First operand 132 states and 434 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:29,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:29,716 INFO L93 Difference]: Finished difference Result 260 states and 768 transitions. [2021-04-15 03:00:29,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-15 03:00:29,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-04-15 03:00:29,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:29,718 INFO L225 Difference]: With dead ends: 260 [2021-04-15 03:00:29,718 INFO L226 Difference]: Without dead ends: 245 [2021-04-15 03:00:29,719 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 173.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-04-15 03:00:29,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-04-15 03:00:29,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 140. [2021-04-15 03:00:29,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 3.2949640287769784) internal successors, (458), 139 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:29,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 458 transitions. [2021-04-15 03:00:29,731 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 458 transitions. Word has length 14 [2021-04-15 03:00:29,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:29,731 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 458 transitions. [2021-04-15 03:00:29,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:29,731 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 458 transitions. [2021-04-15 03:00:29,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-04-15 03:00:29,732 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:29,733 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:29,733 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-15 03:00:29,733 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:29,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:29,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1906157040, now seen corresponding path program 4 times [2021-04-15 03:00:29,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:29,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483140837] [2021-04-15 03:00:29,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:29,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:29,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483140837] [2021-04-15 03:00:29,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:00:29,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-15 03:00:29,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133657271] [2021-04-15 03:00:29,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-15 03:00:29,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:29,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-15 03:00:29,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-15 03:00:29,838 INFO L87 Difference]: Start difference. First operand 140 states and 458 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:29,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:29,980 INFO L93 Difference]: Finished difference Result 304 states and 944 transitions. [2021-04-15 03:00:29,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-15 03:00:29,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-04-15 03:00:29,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:29,983 INFO L225 Difference]: With dead ends: 304 [2021-04-15 03:00:29,983 INFO L226 Difference]: Without dead ends: 289 [2021-04-15 03:00:29,984 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 107.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-04-15 03:00:29,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-04-15 03:00:29,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 140. [2021-04-15 03:00:29,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 3.2949640287769784) internal successors, (458), 139 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:29,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 458 transitions. [2021-04-15 03:00:29,992 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 458 transitions. Word has length 14 [2021-04-15 03:00:29,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:29,993 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 458 transitions. [2021-04-15 03:00:29,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:29,993 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 458 transitions. [2021-04-15 03:00:29,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-04-15 03:00:29,994 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:29,994 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:29,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-15 03:00:29,995 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:29,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:29,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1941149522, now seen corresponding path program 5 times [2021-04-15 03:00:29,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:29,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735910596] [2021-04-15 03:00:29,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:30,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:30,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735910596] [2021-04-15 03:00:30,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:00:30,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-15 03:00:30,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426610869] [2021-04-15 03:00:30,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-15 03:00:30,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:30,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-15 03:00:30,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-15 03:00:30,137 INFO L87 Difference]: Start difference. First operand 140 states and 458 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:30,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:30,290 INFO L93 Difference]: Finished difference Result 371 states and 1217 transitions. [2021-04-15 03:00:30,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-15 03:00:30,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-04-15 03:00:30,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:30,294 INFO L225 Difference]: With dead ends: 371 [2021-04-15 03:00:30,294 INFO L226 Difference]: Without dead ends: 356 [2021-04-15 03:00:30,298 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 129.4ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-04-15 03:00:30,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-04-15 03:00:30,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 142. [2021-04-15 03:00:30,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 3.3120567375886525) internal successors, (467), 141 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:30,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 467 transitions. [2021-04-15 03:00:30,307 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 467 transitions. Word has length 14 [2021-04-15 03:00:30,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:30,307 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 467 transitions. [2021-04-15 03:00:30,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:30,307 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 467 transitions. [2021-04-15 03:00:30,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-04-15 03:00:30,309 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:30,309 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:30,309 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-15 03:00:30,309 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:30,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:30,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1674927890, now seen corresponding path program 6 times [2021-04-15 03:00:30,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:30,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096143456] [2021-04-15 03:00:30,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:30,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:30,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096143456] [2021-04-15 03:00:30,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:00:30,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-15 03:00:30,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656986315] [2021-04-15 03:00:30,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-15 03:00:30,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:30,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-15 03:00:30,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-15 03:00:30,555 INFO L87 Difference]: Start difference. First operand 142 states and 467 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:30,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:30,725 INFO L93 Difference]: Finished difference Result 295 states and 918 transitions. [2021-04-15 03:00:30,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-15 03:00:30,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-04-15 03:00:30,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:30,739 INFO L225 Difference]: With dead ends: 295 [2021-04-15 03:00:30,739 INFO L226 Difference]: Without dead ends: 280 [2021-04-15 03:00:30,740 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 167.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-04-15 03:00:30,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-04-15 03:00:30,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 142. [2021-04-15 03:00:30,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 3.3120567375886525) internal successors, (467), 141 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:30,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 467 transitions. [2021-04-15 03:00:30,751 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 467 transitions. Word has length 14 [2021-04-15 03:00:30,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:30,752 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 467 transitions. [2021-04-15 03:00:30,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:30,752 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 467 transitions. [2021-04-15 03:00:30,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-04-15 03:00:30,754 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:30,754 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:30,754 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-15 03:00:30,754 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:30,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:30,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1444712772, now seen corresponding path program 1 times [2021-04-15 03:00:30,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:30,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507860981] [2021-04-15 03:00:30,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:30,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:30,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507860981] [2021-04-15 03:00:30,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:00:30,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-15 03:00:30,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484515969] [2021-04-15 03:00:30,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-15 03:00:30,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:30,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-15 03:00:30,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-15 03:00:30,782 INFO L87 Difference]: Start difference. First operand 142 states and 467 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:30,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:30,787 INFO L93 Difference]: Finished difference Result 166 states and 549 transitions. [2021-04-15 03:00:30,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-15 03:00:30,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-04-15 03:00:30,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:30,789 INFO L225 Difference]: With dead ends: 166 [2021-04-15 03:00:30,789 INFO L226 Difference]: Without dead ends: 166 [2021-04-15 03:00:30,790 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-15 03:00:30,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-04-15 03:00:30,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-04-15 03:00:30,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 3.327272727272727) internal successors, (549), 165 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:30,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 549 transitions. [2021-04-15 03:00:30,797 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 549 transitions. Word has length 15 [2021-04-15 03:00:30,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:30,797 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 549 transitions. [2021-04-15 03:00:30,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:30,797 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 549 transitions. [2021-04-15 03:00:30,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-04-15 03:00:30,798 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:30,798 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:30,798 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-15 03:00:30,799 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:30,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:30,799 INFO L82 PathProgramCache]: Analyzing trace with hash 868256482, now seen corresponding path program 1 times [2021-04-15 03:00:30,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:30,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999759896] [2021-04-15 03:00:30,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:30,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999759896] [2021-04-15 03:00:30,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:00:30,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-15 03:00:30,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298782354] [2021-04-15 03:00:30,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-15 03:00:30,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:30,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-15 03:00:30,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-15 03:00:30,817 INFO L87 Difference]: Start difference. First operand 166 states and 549 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:30,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:30,823 INFO L93 Difference]: Finished difference Result 192 states and 636 transitions. [2021-04-15 03:00:30,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-15 03:00:30,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-04-15 03:00:30,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:30,825 INFO L225 Difference]: With dead ends: 192 [2021-04-15 03:00:30,825 INFO L226 Difference]: Without dead ends: 192 [2021-04-15 03:00:30,826 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-15 03:00:30,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-04-15 03:00:30,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-04-15 03:00:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 3.329842931937173) internal successors, (636), 191 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:30,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 636 transitions. [2021-04-15 03:00:30,833 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 636 transitions. Word has length 15 [2021-04-15 03:00:30,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:30,834 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 636 transitions. [2021-04-15 03:00:30,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:30,834 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 636 transitions. [2021-04-15 03:00:30,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-04-15 03:00:30,835 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:30,835 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:30,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-15 03:00:30,835 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:30,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:30,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1029743448, now seen corresponding path program 1 times [2021-04-15 03:00:30,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:30,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34568140] [2021-04-15 03:00:30,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:30,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:30,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34568140] [2021-04-15 03:00:30,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:00:30,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-15 03:00:30,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665203618] [2021-04-15 03:00:30,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-15 03:00:30,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:30,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-15 03:00:30,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-15 03:00:30,861 INFO L87 Difference]: Start difference. First operand 192 states and 636 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:30,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:30,867 INFO L93 Difference]: Finished difference Result 223 states and 739 transitions. [2021-04-15 03:00:30,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-15 03:00:30,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-04-15 03:00:30,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:30,870 INFO L225 Difference]: With dead ends: 223 [2021-04-15 03:00:30,870 INFO L226 Difference]: Without dead ends: 223 [2021-04-15 03:00:30,870 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-15 03:00:30,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-04-15 03:00:30,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2021-04-15 03:00:30,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 3.328828828828829) internal successors, (739), 222 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:30,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 739 transitions. [2021-04-15 03:00:30,894 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 739 transitions. Word has length 15 [2021-04-15 03:00:30,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:30,895 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 739 transitions. [2021-04-15 03:00:30,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:30,895 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 739 transitions. [2021-04-15 03:00:30,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-04-15 03:00:30,896 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:30,896 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:30,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-15 03:00:30,896 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:30,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:30,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1505443044, now seen corresponding path program 1 times [2021-04-15 03:00:30,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:30,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891996778] [2021-04-15 03:00:30,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:30,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 03:00:30,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891996778] [2021-04-15 03:00:30,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:00:30,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-15 03:00:30,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027716624] [2021-04-15 03:00:30,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-15 03:00:30,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:30,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-15 03:00:30,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-15 03:00:30,963 INFO L87 Difference]: Start difference. First operand 223 states and 739 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:30,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:30,982 INFO L93 Difference]: Finished difference Result 385 states and 1193 transitions. [2021-04-15 03:00:30,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-15 03:00:30,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-04-15 03:00:30,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:30,989 INFO L225 Difference]: With dead ends: 385 [2021-04-15 03:00:30,989 INFO L226 Difference]: Without dead ends: 305 [2021-04-15 03:00:30,990 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-15 03:00:30,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-04-15 03:00:30,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 229. [2021-04-15 03:00:30,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 3.280701754385965) internal successors, (748), 228 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:30,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 748 transitions. [2021-04-15 03:00:30,998 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 748 transitions. Word has length 16 [2021-04-15 03:00:31,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:31,000 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 748 transitions. [2021-04-15 03:00:31,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:31,000 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 748 transitions. [2021-04-15 03:00:31,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-04-15 03:00:31,001 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:31,002 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:31,002 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-04-15 03:00:31,002 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:31,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:31,003 INFO L82 PathProgramCache]: Analyzing trace with hash 821727578, now seen corresponding path program 1 times [2021-04-15 03:00:31,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:31,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890983004] [2021-04-15 03:00:31,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 03:00:31,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890983004] [2021-04-15 03:00:31,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:00:31,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-15 03:00:31,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321267809] [2021-04-15 03:00:31,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-15 03:00:31,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:31,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-15 03:00:31,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-15 03:00:31,033 INFO L87 Difference]: Start difference. First operand 229 states and 748 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:31,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:31,047 INFO L93 Difference]: Finished difference Result 370 states and 1123 transitions. [2021-04-15 03:00:31,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-15 03:00:31,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-04-15 03:00:31,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:31,050 INFO L225 Difference]: With dead ends: 370 [2021-04-15 03:00:31,050 INFO L226 Difference]: Without dead ends: 287 [2021-04-15 03:00:31,050 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-15 03:00:31,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-04-15 03:00:31,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 232. [2021-04-15 03:00:31,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 3.272727272727273) internal successors, (756), 231 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:31,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 756 transitions. [2021-04-15 03:00:31,058 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 756 transitions. Word has length 16 [2021-04-15 03:00:31,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:31,059 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 756 transitions. [2021-04-15 03:00:31,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:31,059 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 756 transitions. [2021-04-15 03:00:31,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-04-15 03:00:31,060 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:31,060 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:31,060 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-04-15 03:00:31,060 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:31,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:31,061 INFO L82 PathProgramCache]: Analyzing trace with hash -2095449492, now seen corresponding path program 1 times [2021-04-15 03:00:31,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:31,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781560842] [2021-04-15 03:00:31,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:31,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:31,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781560842] [2021-04-15 03:00:31,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360001474] [2021-04-15 03:00:31,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:00:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:31,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2021-04-15 03:00:31,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:00:31,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:31,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:00:31,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-04-15 03:00:31,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483687070] [2021-04-15 03:00:31,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 03:00:31,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:31,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 03:00:31,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-04-15 03:00:31,228 INFO L87 Difference]: Start difference. First operand 232 states and 756 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:31,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:31,303 INFO L93 Difference]: Finished difference Result 376 states and 1097 transitions. [2021-04-15 03:00:31,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-15 03:00:31,304 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-04-15 03:00:31,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:31,306 INFO L225 Difference]: With dead ends: 376 [2021-04-15 03:00:31,306 INFO L226 Difference]: Without dead ends: 334 [2021-04-15 03:00:31,306 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 47.2ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-04-15 03:00:31,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-04-15 03:00:31,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 232. [2021-04-15 03:00:31,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 3.2337662337662336) internal successors, (747), 231 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:31,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 747 transitions. [2021-04-15 03:00:31,316 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 747 transitions. Word has length 16 [2021-04-15 03:00:31,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:31,316 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 747 transitions. [2021-04-15 03:00:31,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:31,316 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 747 transitions. [2021-04-15 03:00:31,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-04-15 03:00:31,317 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:31,317 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:31,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-04-15 03:00:31,539 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:31,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:31,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1703674642, now seen corresponding path program 2 times [2021-04-15 03:00:31,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:31,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703462745] [2021-04-15 03:00:31,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:31,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:31,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703462745] [2021-04-15 03:00:31,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706578548] [2021-04-15 03:00:31,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:00:31,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:00:31,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:00:31,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2021-04-15 03:00:31,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:00:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:31,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:00:31,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-04-15 03:00:31,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203384829] [2021-04-15 03:00:31,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 03:00:31,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:31,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 03:00:31,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-04-15 03:00:31,743 INFO L87 Difference]: Start difference. First operand 232 states and 747 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:31,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:31,897 INFO L93 Difference]: Finished difference Result 556 states and 1605 transitions. [2021-04-15 03:00:31,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 03:00:31,897 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-04-15 03:00:31,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:31,901 INFO L225 Difference]: With dead ends: 556 [2021-04-15 03:00:31,901 INFO L226 Difference]: Without dead ends: 523 [2021-04-15 03:00:31,902 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 73.3ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-04-15 03:00:31,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-04-15 03:00:31,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 244. [2021-04-15 03:00:31,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 3.2181069958847734) internal successors, (782), 243 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:31,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 782 transitions. [2021-04-15 03:00:31,916 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 782 transitions. Word has length 16 [2021-04-15 03:00:31,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:31,916 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 782 transitions. [2021-04-15 03:00:31,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:31,917 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 782 transitions. [2021-04-15 03:00:31,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-04-15 03:00:31,918 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:31,918 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:32,142 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-04-15 03:00:32,142 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:32,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:32,143 INFO L82 PathProgramCache]: Analyzing trace with hash 364875434, now seen corresponding path program 2 times [2021-04-15 03:00:32,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:32,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280481025] [2021-04-15 03:00:32,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:32,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 03:00:32,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280481025] [2021-04-15 03:00:32,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:00:32,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-15 03:00:32,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104336415] [2021-04-15 03:00:32,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-15 03:00:32,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:32,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-15 03:00:32,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-15 03:00:32,185 INFO L87 Difference]: Start difference. First operand 244 states and 782 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:32,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:32,237 INFO L93 Difference]: Finished difference Result 428 states and 1250 transitions. [2021-04-15 03:00:32,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-15 03:00:32,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-04-15 03:00:32,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:32,240 INFO L225 Difference]: With dead ends: 428 [2021-04-15 03:00:32,240 INFO L226 Difference]: Without dead ends: 346 [2021-04-15 03:00:32,240 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 25.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-04-15 03:00:32,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-04-15 03:00:32,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 215. [2021-04-15 03:00:32,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 3.177570093457944) internal successors, (680), 214 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:32,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 680 transitions. [2021-04-15 03:00:32,250 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 680 transitions. Word has length 16 [2021-04-15 03:00:32,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:32,252 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 680 transitions. [2021-04-15 03:00:32,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:32,252 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 680 transitions. [2021-04-15 03:00:32,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-04-15 03:00:32,253 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:32,253 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:32,254 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-04-15 03:00:32,254 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:32,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:32,254 INFO L82 PathProgramCache]: Analyzing trace with hash -792720916, now seen corresponding path program 3 times [2021-04-15 03:00:32,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:32,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355610767] [2021-04-15 03:00:32,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:32,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 03:00:32,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355610767] [2021-04-15 03:00:32,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:00:32,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-15 03:00:32,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110604808] [2021-04-15 03:00:32,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-15 03:00:32,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:32,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-15 03:00:32,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-15 03:00:32,314 INFO L87 Difference]: Start difference. First operand 215 states and 680 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:32,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:32,365 INFO L93 Difference]: Finished difference Result 385 states and 1123 transitions. [2021-04-15 03:00:32,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-15 03:00:32,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-04-15 03:00:32,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:32,368 INFO L225 Difference]: With dead ends: 385 [2021-04-15 03:00:32,369 INFO L226 Difference]: Without dead ends: 358 [2021-04-15 03:00:32,370 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.2ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-04-15 03:00:32,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-04-15 03:00:32,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 215. [2021-04-15 03:00:32,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 3.1682242990654204) internal successors, (678), 214 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:32,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 678 transitions. [2021-04-15 03:00:32,380 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 678 transitions. Word has length 16 [2021-04-15 03:00:32,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:32,380 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 678 transitions. [2021-04-15 03:00:32,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:32,380 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 678 transitions. [2021-04-15 03:00:32,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-04-15 03:00:32,381 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:32,381 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:32,381 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-04-15 03:00:32,381 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:32,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:32,382 INFO L82 PathProgramCache]: Analyzing trace with hash -507279316, now seen corresponding path program 2 times [2021-04-15 03:00:32,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:32,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776450265] [2021-04-15 03:00:32,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:32,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 03:00:32,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776450265] [2021-04-15 03:00:32,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:00:32,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-15 03:00:32,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112349626] [2021-04-15 03:00:32,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-15 03:00:32,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:32,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-15 03:00:32,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-15 03:00:32,470 INFO L87 Difference]: Start difference. First operand 215 states and 678 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:32,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:32,521 INFO L93 Difference]: Finished difference Result 369 states and 1047 transitions. [2021-04-15 03:00:32,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-15 03:00:32,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-04-15 03:00:32,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:32,524 INFO L225 Difference]: With dead ends: 369 [2021-04-15 03:00:32,524 INFO L226 Difference]: Without dead ends: 332 [2021-04-15 03:00:32,524 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 36.9ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-04-15 03:00:32,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-04-15 03:00:32,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 215. [2021-04-15 03:00:32,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 3.1588785046728973) internal successors, (676), 214 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:32,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 676 transitions. [2021-04-15 03:00:32,534 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 676 transitions. Word has length 16 [2021-04-15 03:00:32,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:32,534 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 676 transitions. [2021-04-15 03:00:32,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:32,534 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 676 transitions. [2021-04-15 03:00:32,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-04-15 03:00:32,537 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:32,537 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:32,537 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-04-15 03:00:32,537 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:32,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:32,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1742439980, now seen corresponding path program 4 times [2021-04-15 03:00:32,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:32,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422391279] [2021-04-15 03:00:32,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:32,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:32,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422391279] [2021-04-15 03:00:32,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752062172] [2021-04-15 03:00:32,571 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:00:32,611 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 03:00:32,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:00:32,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2021-04-15 03:00:32,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:00:32,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:32,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:00:32,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-04-15 03:00:32,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424457282] [2021-04-15 03:00:32,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 03:00:32,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:32,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 03:00:32,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-04-15 03:00:32,735 INFO L87 Difference]: Start difference. First operand 215 states and 676 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:32,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:32,809 INFO L93 Difference]: Finished difference Result 355 states and 997 transitions. [2021-04-15 03:00:32,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-15 03:00:32,810 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-04-15 03:00:32,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:32,813 INFO L225 Difference]: With dead ends: 355 [2021-04-15 03:00:32,814 INFO L226 Difference]: Without dead ends: 309 [2021-04-15 03:00:32,814 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 112.5ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-04-15 03:00:32,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-04-15 03:00:32,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 211. [2021-04-15 03:00:32,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 3.1714285714285713) internal successors, (666), 210 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 666 transitions. [2021-04-15 03:00:32,822 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 666 transitions. Word has length 16 [2021-04-15 03:00:32,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:32,823 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 666 transitions. [2021-04-15 03:00:32,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:32,823 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 666 transitions. [2021-04-15 03:00:32,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-04-15 03:00:32,824 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:32,824 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:33,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-04-15 03:00:33,048 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:33,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:33,049 INFO L82 PathProgramCache]: Analyzing trace with hash -556629742, now seen corresponding path program 5 times [2021-04-15 03:00:33,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:33,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753646066] [2021-04-15 03:00:33,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:33,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 03:00:33,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753646066] [2021-04-15 03:00:33,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:00:33,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-15 03:00:33,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474118331] [2021-04-15 03:00:33,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-15 03:00:33,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:33,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-15 03:00:33,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-15 03:00:33,097 INFO L87 Difference]: Start difference. First operand 211 states and 666 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:33,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:33,173 INFO L93 Difference]: Finished difference Result 346 states and 975 transitions. [2021-04-15 03:00:33,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-15 03:00:33,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-04-15 03:00:33,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:33,175 INFO L225 Difference]: With dead ends: 346 [2021-04-15 03:00:33,175 INFO L226 Difference]: Without dead ends: 319 [2021-04-15 03:00:33,175 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.4ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-04-15 03:00:33,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-04-15 03:00:33,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 211. [2021-04-15 03:00:33,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 3.1619047619047618) internal successors, (664), 210 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:33,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 664 transitions. [2021-04-15 03:00:33,184 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 664 transitions. Word has length 16 [2021-04-15 03:00:33,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:33,184 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 664 transitions. [2021-04-15 03:00:33,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:33,184 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 664 transitions. [2021-04-15 03:00:33,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-04-15 03:00:33,185 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:33,185 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:33,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-04-15 03:00:33,185 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:33,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:33,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1337504340, now seen corresponding path program 6 times [2021-04-15 03:00:33,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:33,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723964691] [2021-04-15 03:00:33,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:33,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:33,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723964691] [2021-04-15 03:00:33,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393818775] [2021-04-15 03:00:33,237 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:00:33,283 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-04-15 03:00:33,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:00:33,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2021-04-15 03:00:33,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:00:33,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:33,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:00:33,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-04-15 03:00:33,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267822057] [2021-04-15 03:00:33,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 03:00:33,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:33,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 03:00:33,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-04-15 03:00:33,379 INFO L87 Difference]: Start difference. First operand 211 states and 664 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:33,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:33,604 INFO L93 Difference]: Finished difference Result 550 states and 1584 transitions. [2021-04-15 03:00:33,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-15 03:00:33,605 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-04-15 03:00:33,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:33,609 INFO L225 Difference]: With dead ends: 550 [2021-04-15 03:00:33,609 INFO L226 Difference]: Without dead ends: 517 [2021-04-15 03:00:33,609 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 171.7ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-04-15 03:00:33,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2021-04-15 03:00:33,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 211. [2021-04-15 03:00:33,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 3.1523809523809523) internal successors, (662), 210 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:33,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 662 transitions. [2021-04-15 03:00:33,620 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 662 transitions. Word has length 16 [2021-04-15 03:00:33,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:33,620 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 662 transitions. [2021-04-15 03:00:33,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:33,621 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 662 transitions. [2021-04-15 03:00:33,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-04-15 03:00:33,621 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:33,621 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:33,845 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:00:33,846 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:33,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:33,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1232360210, now seen corresponding path program 3 times [2021-04-15 03:00:33,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:33,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841721911] [2021-04-15 03:00:33,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:33,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 03:00:33,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841721911] [2021-04-15 03:00:33,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:00:33,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-15 03:00:33,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578764542] [2021-04-15 03:00:33,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-15 03:00:33,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:33,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-15 03:00:33,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-15 03:00:33,894 INFO L87 Difference]: Start difference. First operand 211 states and 662 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:33,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:33,946 INFO L93 Difference]: Finished difference Result 340 states and 952 transitions. [2021-04-15 03:00:33,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-15 03:00:33,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-04-15 03:00:33,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:33,948 INFO L225 Difference]: With dead ends: 340 [2021-04-15 03:00:33,948 INFO L226 Difference]: Without dead ends: 303 [2021-04-15 03:00:33,948 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-04-15 03:00:33,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-04-15 03:00:33,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 203. [2021-04-15 03:00:33,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 3.118811881188119) internal successors, (630), 202 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:33,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 630 transitions. [2021-04-15 03:00:33,956 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 630 transitions. Word has length 16 [2021-04-15 03:00:33,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:33,957 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 630 transitions. [2021-04-15 03:00:33,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:33,957 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 630 transitions. [2021-04-15 03:00:33,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-04-15 03:00:33,957 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:33,958 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:33,958 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-04-15 03:00:33,958 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:33,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:33,958 INFO L82 PathProgramCache]: Analyzing trace with hash -682046510, now seen corresponding path program 4 times [2021-04-15 03:00:33,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:33,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225338113] [2021-04-15 03:00:33,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:33,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 03:00:33,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225338113] [2021-04-15 03:00:33,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:00:33,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-15 03:00:33,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528528846] [2021-04-15 03:00:33,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-15 03:00:33,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:33,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-15 03:00:33,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-15 03:00:33,979 INFO L87 Difference]: Start difference. First operand 203 states and 630 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:33,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:33,995 INFO L93 Difference]: Finished difference Result 240 states and 711 transitions. [2021-04-15 03:00:33,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-15 03:00:33,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-04-15 03:00:33,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:33,996 INFO L225 Difference]: With dead ends: 240 [2021-04-15 03:00:33,996 INFO L226 Difference]: Without dead ends: 199 [2021-04-15 03:00:33,997 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-15 03:00:33,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-04-15 03:00:34,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 191. [2021-04-15 03:00:34,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 3.126315789473684) internal successors, (594), 190 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:34,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 594 transitions. [2021-04-15 03:00:34,003 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 594 transitions. Word has length 16 [2021-04-15 03:00:34,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:34,003 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 594 transitions. [2021-04-15 03:00:34,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:34,003 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 594 transitions. [2021-04-15 03:00:34,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-04-15 03:00:34,005 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:34,005 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:34,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-04-15 03:00:34,005 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:34,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:34,005 INFO L82 PathProgramCache]: Analyzing trace with hash -720277718, now seen corresponding path program 1 times [2021-04-15 03:00:34,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:34,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122136456] [2021-04-15 03:00:34,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:34,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 03:00:34,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122136456] [2021-04-15 03:00:34,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:00:34,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-15 03:00:34,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690500224] [2021-04-15 03:00:34,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-15 03:00:34,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:34,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-15 03:00:34,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-15 03:00:34,031 INFO L87 Difference]: Start difference. First operand 191 states and 594 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:34,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:34,041 INFO L93 Difference]: Finished difference Result 281 states and 830 transitions. [2021-04-15 03:00:34,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-15 03:00:34,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-04-15 03:00:34,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:34,043 INFO L225 Difference]: With dead ends: 281 [2021-04-15 03:00:34,043 INFO L226 Difference]: Without dead ends: 281 [2021-04-15 03:00:34,044 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-15 03:00:34,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-04-15 03:00:34,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 228. [2021-04-15 03:00:34,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 3.101321585903084) internal successors, (704), 227 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:34,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 704 transitions. [2021-04-15 03:00:34,051 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 704 transitions. Word has length 18 [2021-04-15 03:00:34,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:34,051 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 704 transitions. [2021-04-15 03:00:34,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:34,051 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 704 transitions. [2021-04-15 03:00:34,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-04-15 03:00:34,052 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:34,052 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:34,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-04-15 03:00:34,053 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:34,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:34,053 INFO L82 PathProgramCache]: Analyzing trace with hash 147207058, now seen corresponding path program 1 times [2021-04-15 03:00:34,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:34,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122944900] [2021-04-15 03:00:34,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:34,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 03:00:34,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122944900] [2021-04-15 03:00:34,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:00:34,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-15 03:00:34,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693451358] [2021-04-15 03:00:34,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-15 03:00:34,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:34,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-15 03:00:34,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-15 03:00:34,072 INFO L87 Difference]: Start difference. First operand 228 states and 704 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:34,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:34,081 INFO L93 Difference]: Finished difference Result 295 states and 875 transitions. [2021-04-15 03:00:34,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-15 03:00:34,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-04-15 03:00:34,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:34,083 INFO L225 Difference]: With dead ends: 295 [2021-04-15 03:00:34,083 INFO L226 Difference]: Without dead ends: 295 [2021-04-15 03:00:34,084 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-15 03:00:34,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-04-15 03:00:34,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 248. [2021-04-15 03:00:34,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 3.0931174089068825) internal successors, (764), 247 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:34,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 764 transitions. [2021-04-15 03:00:34,093 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 764 transitions. Word has length 18 [2021-04-15 03:00:34,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:34,094 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 764 transitions. [2021-04-15 03:00:34,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:34,094 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 764 transitions. [2021-04-15 03:00:34,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-04-15 03:00:34,096 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:34,096 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:34,096 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-04-15 03:00:34,096 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:34,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:34,096 INFO L82 PathProgramCache]: Analyzing trace with hash -992379222, now seen corresponding path program 2 times [2021-04-15 03:00:34,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:34,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373447458] [2021-04-15 03:00:34,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:34,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 03:00:34,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373447458] [2021-04-15 03:00:34,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:00:34,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-15 03:00:34,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182929816] [2021-04-15 03:00:34,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-15 03:00:34,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:34,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-15 03:00:34,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-15 03:00:34,126 INFO L87 Difference]: Start difference. First operand 248 states and 764 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:34,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:34,135 INFO L93 Difference]: Finished difference Result 256 states and 763 transitions. [2021-04-15 03:00:34,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-15 03:00:34,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-04-15 03:00:34,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:34,137 INFO L225 Difference]: With dead ends: 256 [2021-04-15 03:00:34,138 INFO L226 Difference]: Without dead ends: 256 [2021-04-15 03:00:34,138 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-15 03:00:34,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-04-15 03:00:34,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 211. [2021-04-15 03:00:34,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 3.0142857142857142) internal successors, (633), 210 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:34,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 633 transitions. [2021-04-15 03:00:34,146 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 633 transitions. Word has length 18 [2021-04-15 03:00:34,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:34,146 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 633 transitions. [2021-04-15 03:00:34,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:34,146 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 633 transitions. [2021-04-15 03:00:34,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-04-15 03:00:34,147 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:34,147 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:34,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-04-15 03:00:34,148 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:34,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:34,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1817656876, now seen corresponding path program 3 times [2021-04-15 03:00:34,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:34,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143874381] [2021-04-15 03:00:34,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:34,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-04-15 03:00:34,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143874381] [2021-04-15 03:00:34,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:00:34,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-15 03:00:34,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160564934] [2021-04-15 03:00:34,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-15 03:00:34,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:34,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-15 03:00:34,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-15 03:00:34,169 INFO L87 Difference]: Start difference. First operand 211 states and 633 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:34,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:34,175 INFO L93 Difference]: Finished difference Result 219 states and 645 transitions. [2021-04-15 03:00:34,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-15 03:00:34,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-04-15 03:00:34,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:34,177 INFO L225 Difference]: With dead ends: 219 [2021-04-15 03:00:34,177 INFO L226 Difference]: Without dead ends: 209 [2021-04-15 03:00:34,177 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-15 03:00:34,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-04-15 03:00:34,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2021-04-15 03:00:34,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 3.0240384615384617) internal successors, (629), 208 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:34,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 629 transitions. [2021-04-15 03:00:34,186 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 629 transitions. Word has length 18 [2021-04-15 03:00:34,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:34,186 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 629 transitions. [2021-04-15 03:00:34,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:34,187 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 629 transitions. [2021-04-15 03:00:34,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-04-15 03:00:34,188 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:34,188 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:34,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-04-15 03:00:34,188 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:34,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:34,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1352829548, now seen corresponding path program 2 times [2021-04-15 03:00:34,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:34,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928800262] [2021-04-15 03:00:34,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:34,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 03:00:34,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928800262] [2021-04-15 03:00:34,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:00:34,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-15 03:00:34,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045030627] [2021-04-15 03:00:34,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-15 03:00:34,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:34,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-15 03:00:34,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-15 03:00:34,204 INFO L87 Difference]: Start difference. First operand 209 states and 629 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:34,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:34,211 INFO L93 Difference]: Finished difference Result 209 states and 609 transitions. [2021-04-15 03:00:34,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-15 03:00:34,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-04-15 03:00:34,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:34,212 INFO L225 Difference]: With dead ends: 209 [2021-04-15 03:00:34,212 INFO L226 Difference]: Without dead ends: 209 [2021-04-15 03:00:34,212 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-15 03:00:34,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-04-15 03:00:34,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 189. [2021-04-15 03:00:34,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.9202127659574466) internal successors, (549), 188 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:34,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 549 transitions. [2021-04-15 03:00:34,217 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 549 transitions. Word has length 18 [2021-04-15 03:00:34,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:34,217 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 549 transitions. [2021-04-15 03:00:34,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:34,217 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 549 transitions. [2021-04-15 03:00:34,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:00:34,219 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:34,219 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:34,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-04-15 03:00:34,220 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:34,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:34,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1392682474, now seen corresponding path program 1 times [2021-04-15 03:00:34,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:34,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072214881] [2021-04-15 03:00:34,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:34,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:34,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072214881] [2021-04-15 03:00:34,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245250534] [2021-04-15 03:00:34,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:00:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:34,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:00:34,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:00:35,399 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2021-04-15 03:00:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:35,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:00:35,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:00:35,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191429291] [2021-04-15 03:00:35,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:00:35,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:35,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:00:35,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:00:35,544 INFO L87 Difference]: Start difference. First operand 189 states and 549 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:35,899 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2021-04-15 03:00:36,482 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2021-04-15 03:00:36,816 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2021-04-15 03:00:36,982 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-15 03:00:37,216 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2021-04-15 03:00:37,472 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2021-04-15 03:00:37,622 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-04-15 03:00:37,936 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2021-04-15 03:00:37,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:37,974 INFO L93 Difference]: Finished difference Result 573 states and 1653 transitions. [2021-04-15 03:00:37,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-15 03:00:37,975 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:00:37,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:37,977 INFO L225 Difference]: With dead ends: 573 [2021-04-15 03:00:37,977 INFO L226 Difference]: Without dead ends: 528 [2021-04-15 03:00:37,978 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 2790.1ms TimeCoverageRelationStatistics Valid=216, Invalid=714, Unknown=0, NotChecked=0, Total=930 [2021-04-15 03:00:37,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-04-15 03:00:37,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 249. [2021-04-15 03:00:37,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 2.975806451612903) internal successors, (738), 248 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:37,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 738 transitions. [2021-04-15 03:00:37,987 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 738 transitions. Word has length 20 [2021-04-15 03:00:37,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:37,987 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 738 transitions. [2021-04-15 03:00:37,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:37,987 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 738 transitions. [2021-04-15 03:00:37,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:00:37,988 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:37,988 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:38,204 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-04-15 03:00:38,205 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:38,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:38,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1376626424, now seen corresponding path program 2 times [2021-04-15 03:00:38,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:38,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35146651] [2021-04-15 03:00:38,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:38,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:38,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35146651] [2021-04-15 03:00:38,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122881124] [2021-04-15 03:00:38,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:00:38,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:00:38,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:00:38,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:00:38,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:00:38,991 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2021-04-15 03:00:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:39,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:00:39,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:00:39,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511397687] [2021-04-15 03:00:39,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:00:39,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:39,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:00:39,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:00:39,315 INFO L87 Difference]: Start difference. First operand 249 states and 738 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:40,113 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-15 03:00:40,280 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2021-04-15 03:00:40,601 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2021-04-15 03:00:41,100 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2021-04-15 03:00:41,328 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-04-15 03:00:41,549 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2021-04-15 03:00:41,725 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2021-04-15 03:00:41,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:41,737 INFO L93 Difference]: Finished difference Result 618 states and 1792 transitions. [2021-04-15 03:00:41,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-04-15 03:00:41,737 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:00:41,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:41,740 INFO L225 Difference]: With dead ends: 618 [2021-04-15 03:00:41,741 INFO L226 Difference]: Without dead ends: 573 [2021-04-15 03:00:41,741 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 2686.1ms TimeCoverageRelationStatistics Valid=273, Invalid=1287, Unknown=0, NotChecked=0, Total=1560 [2021-04-15 03:00:41,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-04-15 03:00:41,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 266. [2021-04-15 03:00:41,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 2.9924528301886792) internal successors, (793), 265 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:41,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 793 transitions. [2021-04-15 03:00:41,751 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 793 transitions. Word has length 20 [2021-04-15 03:00:41,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:41,751 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 793 transitions. [2021-04-15 03:00:41,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:41,752 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 793 transitions. [2021-04-15 03:00:41,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:00:41,752 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:41,753 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:41,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:00:41,969 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:41,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:41,969 INFO L82 PathProgramCache]: Analyzing trace with hash -191544444, now seen corresponding path program 3 times [2021-04-15 03:00:41,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:41,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008549731] [2021-04-15 03:00:41,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:42,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:42,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008549731] [2021-04-15 03:00:42,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186125051] [2021-04-15 03:00:42,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:00:42,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-04-15 03:00:42,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:00:42,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:00:42,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:00:42,782 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-04-15 03:00:43,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:43,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:00:43,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:00:43,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949378983] [2021-04-15 03:00:43,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:00:43,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:43,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:00:43,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:00:43,028 INFO L87 Difference]: Start difference. First operand 266 states and 793 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:43,572 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-04-15 03:00:44,068 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-04-15 03:00:44,332 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2021-04-15 03:00:44,595 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2021-04-15 03:00:45,026 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2021-04-15 03:00:45,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:45,063 INFO L93 Difference]: Finished difference Result 598 states and 1739 transitions. [2021-04-15 03:00:45,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-04-15 03:00:45,064 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:00:45,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:45,066 INFO L225 Difference]: With dead ends: 598 [2021-04-15 03:00:45,066 INFO L226 Difference]: Without dead ends: 553 [2021-04-15 03:00:45,066 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 2229.2ms TimeCoverageRelationStatistics Valid=233, Invalid=957, Unknown=0, NotChecked=0, Total=1190 [2021-04-15 03:00:45,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-04-15 03:00:45,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 270. [2021-04-15 03:00:45,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 2.992565055762082) internal successors, (805), 269 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:45,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 805 transitions. [2021-04-15 03:00:45,075 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 805 transitions. Word has length 20 [2021-04-15 03:00:45,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:45,075 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 805 transitions. [2021-04-15 03:00:45,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:45,075 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 805 transitions. [2021-04-15 03:00:45,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:00:45,076 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:45,076 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:45,298 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:00:45,298 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:45,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:45,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1568508496, now seen corresponding path program 4 times [2021-04-15 03:00:45,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:45,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92186143] [2021-04-15 03:00:45,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:45,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:45,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92186143] [2021-04-15 03:00:45,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463145389] [2021-04-15 03:00:45,552 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:00:45,600 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 03:00:45,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:00:45,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 37 conjunts are in the unsatisfiable core [2021-04-15 03:00:45,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:00:46,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:46,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:00:46,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:00:46,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972783381] [2021-04-15 03:00:46,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:00:46,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:46,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:00:46,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:00:46,297 INFO L87 Difference]: Start difference. First operand 270 states and 805 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:47,059 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2021-04-15 03:00:47,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:47,431 INFO L93 Difference]: Finished difference Result 591 states and 1723 transitions. [2021-04-15 03:00:47,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-04-15 03:00:47,431 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:00:47,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:47,434 INFO L225 Difference]: With dead ends: 591 [2021-04-15 03:00:47,434 INFO L226 Difference]: Without dead ends: 576 [2021-04-15 03:00:47,435 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1408.5ms TimeCoverageRelationStatistics Valid=211, Invalid=781, Unknown=0, NotChecked=0, Total=992 [2021-04-15 03:00:47,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-04-15 03:00:47,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 273. [2021-04-15 03:00:47,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 3.0036764705882355) internal successors, (817), 272 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:47,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 817 transitions. [2021-04-15 03:00:47,443 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 817 transitions. Word has length 20 [2021-04-15 03:00:47,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:47,443 INFO L480 AbstractCegarLoop]: Abstraction has 273 states and 817 transitions. [2021-04-15 03:00:47,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:47,443 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 817 transitions. [2021-04-15 03:00:47,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:00:47,444 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:47,444 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:47,668 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:00:47,669 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:47,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:47,669 INFO L82 PathProgramCache]: Analyzing trace with hash 56489052, now seen corresponding path program 5 times [2021-04-15 03:00:47,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:47,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629702996] [2021-04-15 03:00:47,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:48,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:48,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629702996] [2021-04-15 03:00:48,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916002891] [2021-04-15 03:00:48,042 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:00:48,086 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-04-15 03:00:48,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:00:48,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:00:48,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:00:48,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:48,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:00:48,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-04-15 03:00:48,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651479390] [2021-04-15 03:00:48,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-15 03:00:48,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:48,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-15 03:00:48,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-04-15 03:00:48,691 INFO L87 Difference]: Start difference. First operand 273 states and 817 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:49,072 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-15 03:00:49,239 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-04-15 03:00:49,487 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-04-15 03:00:49,676 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2021-04-15 03:00:49,986 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2021-04-15 03:00:50,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:50,215 INFO L93 Difference]: Finished difference Result 524 states and 1518 transitions. [2021-04-15 03:00:50,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-15 03:00:50,216 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:00:50,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:50,218 INFO L225 Difference]: With dead ends: 524 [2021-04-15 03:00:50,218 INFO L226 Difference]: Without dead ends: 494 [2021-04-15 03:00:50,218 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1937.6ms TimeCoverageRelationStatistics Valid=206, Invalid=786, Unknown=0, NotChecked=0, Total=992 [2021-04-15 03:00:50,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-04-15 03:00:50,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 282. [2021-04-15 03:00:50,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 2.99288256227758) internal successors, (841), 281 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:50,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 841 transitions. [2021-04-15 03:00:50,225 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 841 transitions. Word has length 20 [2021-04-15 03:00:50,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:50,225 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 841 transitions. [2021-04-15 03:00:50,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:50,226 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 841 transitions. [2021-04-15 03:00:50,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:00:50,226 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:50,226 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:50,440 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:00:50,441 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:50,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:50,441 INFO L82 PathProgramCache]: Analyzing trace with hash -700537316, now seen corresponding path program 6 times [2021-04-15 03:00:50,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:50,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096147196] [2021-04-15 03:00:50,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:50,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:50,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096147196] [2021-04-15 03:00:50,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542892636] [2021-04-15 03:00:50,648 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:00:50,687 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-04-15 03:00:50,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:00:50,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:00:50,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:00:51,065 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-04-15 03:00:51,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:51,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:00:51,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:00:51,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629949930] [2021-04-15 03:00:51,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:00:51,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:51,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:00:51,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:00:51,346 INFO L87 Difference]: Start difference. First operand 282 states and 841 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:51,617 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-04-15 03:00:51,892 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2021-04-15 03:00:52,166 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-04-15 03:00:52,417 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2021-04-15 03:00:52,694 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-04-15 03:00:52,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:52,855 INFO L93 Difference]: Finished difference Result 559 states and 1609 transitions. [2021-04-15 03:00:52,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-15 03:00:52,855 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:00:52,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:52,857 INFO L225 Difference]: With dead ends: 559 [2021-04-15 03:00:52,857 INFO L226 Difference]: Without dead ends: 529 [2021-04-15 03:00:52,857 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1835.0ms TimeCoverageRelationStatistics Valid=185, Invalid=745, Unknown=0, NotChecked=0, Total=930 [2021-04-15 03:00:52,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-04-15 03:00:52,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 295. [2021-04-15 03:00:52,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 3.0408163265306123) internal successors, (894), 294 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:52,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 894 transitions. [2021-04-15 03:00:52,865 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 894 transitions. Word has length 20 [2021-04-15 03:00:52,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:52,867 INFO L480 AbstractCegarLoop]: Abstraction has 295 states and 894 transitions. [2021-04-15 03:00:52,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:52,867 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 894 transitions. [2021-04-15 03:00:52,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:00:52,868 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:52,868 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:53,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2021-04-15 03:00:53,085 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:53,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:53,085 INFO L82 PathProgramCache]: Analyzing trace with hash -348161626, now seen corresponding path program 7 times [2021-04-15 03:00:53,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:53,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941893451] [2021-04-15 03:00:53,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:53,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:53,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941893451] [2021-04-15 03:00:53,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640503402] [2021-04-15 03:00:53,289 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:00:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:53,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 37 conjunts are in the unsatisfiable core [2021-04-15 03:00:53,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:00:53,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:53,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:00:53,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:00:53,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583331941] [2021-04-15 03:00:53,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:00:53,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:53,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:00:53,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:00:53,878 INFO L87 Difference]: Start difference. First operand 295 states and 894 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:54,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:54,314 INFO L93 Difference]: Finished difference Result 474 states and 1398 transitions. [2021-04-15 03:00:54,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 03:00:54,315 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:00:54,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:54,317 INFO L225 Difference]: With dead ends: 474 [2021-04-15 03:00:54,317 INFO L226 Difference]: Without dead ends: 459 [2021-04-15 03:00:54,317 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 720.9ms TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2021-04-15 03:00:54,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-04-15 03:00:54,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 298. [2021-04-15 03:00:54,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 3.037037037037037) internal successors, (902), 297 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:54,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 902 transitions. [2021-04-15 03:00:54,324 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 902 transitions. Word has length 20 [2021-04-15 03:00:54,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:54,325 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 902 transitions. [2021-04-15 03:00:54,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:54,325 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 902 transitions. [2021-04-15 03:00:54,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:00:54,326 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:54,326 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:54,549 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:00:54,550 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:54,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:54,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1349083318, now seen corresponding path program 8 times [2021-04-15 03:00:54,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:54,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515315885] [2021-04-15 03:00:54,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:54,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:54,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515315885] [2021-04-15 03:00:54,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664765178] [2021-04-15 03:00:54,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:00:54,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:00:54,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:00:54,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:00:54,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:00:55,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:55,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:00:55,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:00:55,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013250952] [2021-04-15 03:00:55,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:00:55,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:55,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:00:55,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:00:55,396 INFO L87 Difference]: Start difference. First operand 298 states and 902 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:56,739 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-04-15 03:00:56,871 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-04-15 03:00:57,255 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2021-04-15 03:00:57,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:57,284 INFO L93 Difference]: Finished difference Result 639 states and 1826 transitions. [2021-04-15 03:00:57,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-04-15 03:00:57,284 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:00:57,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:57,286 INFO L225 Difference]: With dead ends: 639 [2021-04-15 03:00:57,286 INFO L226 Difference]: Without dead ends: 594 [2021-04-15 03:00:57,287 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 2091.9ms TimeCoverageRelationStatistics Valid=247, Invalid=1085, Unknown=0, NotChecked=0, Total=1332 [2021-04-15 03:00:57,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-04-15 03:00:57,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 315. [2021-04-15 03:00:57,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 3.0636942675159236) internal successors, (962), 314 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:57,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 962 transitions. [2021-04-15 03:00:57,293 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 962 transitions. Word has length 20 [2021-04-15 03:00:57,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:57,293 INFO L480 AbstractCegarLoop]: Abstraction has 315 states and 962 transitions. [2021-04-15 03:00:57,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:57,293 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 962 transitions. [2021-04-15 03:00:57,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:00:57,293 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:57,294 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:57,494 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2021-04-15 03:00:57,494 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:57,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:57,494 INFO L82 PathProgramCache]: Analyzing trace with hash 2112101588, now seen corresponding path program 9 times [2021-04-15 03:00:57,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:57,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544562163] [2021-04-15 03:00:57,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:57,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:57,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544562163] [2021-04-15 03:00:57,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535898145] [2021-04-15 03:00:57,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:00:57,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-04-15 03:00:57,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:00:57,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 37 conjunts are in the unsatisfiable core [2021-04-15 03:00:57,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:00:58,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:58,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:00:58,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:00:58,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16621954] [2021-04-15 03:00:58,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:00:58,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:00:58,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:00:58,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:00:58,480 INFO L87 Difference]: Start difference. First operand 315 states and 962 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:58,773 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2021-04-15 03:00:59,352 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2021-04-15 03:00:59,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:00:59,357 INFO L93 Difference]: Finished difference Result 558 states and 1645 transitions. [2021-04-15 03:00:59,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-15 03:00:59,358 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:00:59,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:00:59,359 INFO L225 Difference]: With dead ends: 558 [2021-04-15 03:00:59,359 INFO L226 Difference]: Without dead ends: 543 [2021-04-15 03:00:59,360 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1279.0ms TimeCoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2021-04-15 03:00:59,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-04-15 03:00:59,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 320. [2021-04-15 03:00:59,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 3.0783699059561127) internal successors, (982), 319 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:59,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 982 transitions. [2021-04-15 03:00:59,366 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 982 transitions. Word has length 20 [2021-04-15 03:00:59,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:00:59,367 INFO L480 AbstractCegarLoop]: Abstraction has 320 states and 982 transitions. [2021-04-15 03:00:59,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:00:59,367 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 982 transitions. [2021-04-15 03:00:59,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:00:59,368 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:00:59,368 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:00:59,583 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable190 [2021-04-15 03:00:59,583 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:00:59,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:00:59,584 INFO L82 PathProgramCache]: Analyzing trace with hash -688262744, now seen corresponding path program 10 times [2021-04-15 03:00:59,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:00:59,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091506267] [2021-04-15 03:00:59,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:00:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:00:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:00:59,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091506267] [2021-04-15 03:00:59,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174939512] [2021-04-15 03:00:59,929 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:00:59,962 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 03:00:59,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:00:59,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:00:59,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:01:00,388 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2021-04-15 03:01:00,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:00,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:01:00,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:01:00,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125518606] [2021-04-15 03:01:00,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:01:00,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:01:00,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:01:00,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:01:00,643 INFO L87 Difference]: Start difference. First operand 320 states and 982 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:01,260 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-15 03:01:01,498 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-04-15 03:01:01,742 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2021-04-15 03:01:01,948 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2021-04-15 03:01:02,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:01:02,063 INFO L93 Difference]: Finished difference Result 574 states and 1669 transitions. [2021-04-15 03:01:02,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-04-15 03:01:02,063 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:01:02,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:01:02,065 INFO L225 Difference]: With dead ends: 574 [2021-04-15 03:01:02,065 INFO L226 Difference]: Without dead ends: 544 [2021-04-15 03:01:02,066 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1881.8ms TimeCoverageRelationStatistics Valid=171, Invalid=759, Unknown=0, NotChecked=0, Total=930 [2021-04-15 03:01:02,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-04-15 03:01:02,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 327. [2021-04-15 03:01:02,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 3.058282208588957) internal successors, (997), 326 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:02,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 997 transitions. [2021-04-15 03:01:02,073 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 997 transitions. Word has length 20 [2021-04-15 03:01:02,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:01:02,073 INFO L480 AbstractCegarLoop]: Abstraction has 327 states and 997 transitions. [2021-04-15 03:01:02,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:02,073 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 997 transitions. [2021-04-15 03:01:02,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:01:02,074 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:01:02,074 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:01:02,292 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:01:02,293 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:01:02,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:01:02,293 INFO L82 PathProgramCache]: Analyzing trace with hash -997783728, now seen corresponding path program 11 times [2021-04-15 03:01:02,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:01:02,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503238061] [2021-04-15 03:01:02,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:01:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:01:02,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:02,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503238061] [2021-04-15 03:01:02,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024928179] [2021-04-15 03:01:02,553 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:01:02,593 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-04-15 03:01:02,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:01:02,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:01:02,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:01:03,121 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2021-04-15 03:01:03,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:03,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:01:03,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-04-15 03:01:03,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421107517] [2021-04-15 03:01:03,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-15 03:01:03,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:01:03,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-15 03:01:03,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-04-15 03:01:03,304 INFO L87 Difference]: Start difference. First operand 327 states and 997 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:03,730 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2021-04-15 03:01:04,378 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2021-04-15 03:01:04,788 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2021-04-15 03:01:04,963 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2021-04-15 03:01:05,341 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2021-04-15 03:01:05,725 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2021-04-15 03:01:05,907 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2021-04-15 03:01:06,049 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 48 [2021-04-15 03:01:06,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:01:06,056 INFO L93 Difference]: Finished difference Result 711 states and 2041 transitions. [2021-04-15 03:01:06,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-04-15 03:01:06,056 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:01:06,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:01:06,059 INFO L225 Difference]: With dead ends: 711 [2021-04-15 03:01:06,059 INFO L226 Difference]: Without dead ends: 636 [2021-04-15 03:01:06,059 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 3011.2ms TimeCoverageRelationStatistics Valid=276, Invalid=1056, Unknown=0, NotChecked=0, Total=1332 [2021-04-15 03:01:06,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-04-15 03:01:06,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 336. [2021-04-15 03:01:06,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 3.056716417910448) internal successors, (1024), 335 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:06,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 1024 transitions. [2021-04-15 03:01:06,068 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 1024 transitions. Word has length 20 [2021-04-15 03:01:06,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:01:06,068 INFO L480 AbstractCegarLoop]: Abstraction has 336 states and 1024 transitions. [2021-04-15 03:01:06,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:06,068 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 1024 transitions. [2021-04-15 03:01:06,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:01:06,069 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:01:06,070 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:01:06,284 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable239 [2021-04-15 03:01:06,285 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:01:06,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:01:06,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1210228068, now seen corresponding path program 12 times [2021-04-15 03:01:06,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:01:06,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405777187] [2021-04-15 03:01:06,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:01:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:01:06,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:06,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405777187] [2021-04-15 03:01:06,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380609819] [2021-04-15 03:01:06,630 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:01:06,682 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-04-15 03:01:06,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:01:06,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 37 conjunts are in the unsatisfiable core [2021-04-15 03:01:06,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:01:07,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:07,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:01:07,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:01:07,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031394074] [2021-04-15 03:01:07,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:01:07,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:01:07,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:01:07,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:01:07,259 INFO L87 Difference]: Start difference. First operand 336 states and 1024 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:07,766 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2021-04-15 03:01:08,002 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2021-04-15 03:01:08,158 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2021-04-15 03:01:08,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:01:08,293 INFO L93 Difference]: Finished difference Result 581 states and 1708 transitions. [2021-04-15 03:01:08,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-04-15 03:01:08,294 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:01:08,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:01:08,296 INFO L225 Difference]: With dead ends: 581 [2021-04-15 03:01:08,296 INFO L226 Difference]: Without dead ends: 566 [2021-04-15 03:01:08,296 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1388.7ms TimeCoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2021-04-15 03:01:08,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-04-15 03:01:08,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 342. [2021-04-15 03:01:08,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 3.070381231671554) internal successors, (1047), 341 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:08,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 1047 transitions. [2021-04-15 03:01:08,304 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 1047 transitions. Word has length 20 [2021-04-15 03:01:08,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:01:08,304 INFO L480 AbstractCegarLoop]: Abstraction has 342 states and 1047 transitions. [2021-04-15 03:01:08,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:08,304 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 1047 transitions. [2021-04-15 03:01:08,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:01:08,305 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:01:08,305 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:01:08,527 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:01:08,528 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:01:08,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:01:08,528 INFO L82 PathProgramCache]: Analyzing trace with hash 762269212, now seen corresponding path program 13 times [2021-04-15 03:01:08,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:01:08,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616617645] [2021-04-15 03:01:08,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:01:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:01:08,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:08,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616617645] [2021-04-15 03:01:08,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903993324] [2021-04-15 03:01:08,738 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:01:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:01:08,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:01:08,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:01:09,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:09,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:01:09,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:01:09,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456879557] [2021-04-15 03:01:09,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:01:09,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:01:09,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:01:09,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:01:09,327 INFO L87 Difference]: Start difference. First operand 342 states and 1047 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:09,701 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2021-04-15 03:01:10,105 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-04-15 03:01:10,375 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-04-15 03:01:10,692 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2021-04-15 03:01:11,051 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2021-04-15 03:01:11,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:01:11,070 INFO L93 Difference]: Finished difference Result 671 states and 2020 transitions. [2021-04-15 03:01:11,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-04-15 03:01:11,071 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:01:11,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:01:11,073 INFO L225 Difference]: With dead ends: 671 [2021-04-15 03:01:11,073 INFO L226 Difference]: Without dead ends: 626 [2021-04-15 03:01:11,074 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1937.9ms TimeCoverageRelationStatistics Valid=231, Invalid=959, Unknown=0, NotChecked=0, Total=1190 [2021-04-15 03:01:11,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-04-15 03:01:11,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 343. [2021-04-15 03:01:11,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 3.0760233918128654) internal successors, (1052), 342 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:11,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 1052 transitions. [2021-04-15 03:01:11,081 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 1052 transitions. Word has length 20 [2021-04-15 03:01:11,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:01:11,082 INFO L480 AbstractCegarLoop]: Abstraction has 343 states and 1052 transitions. [2021-04-15 03:01:11,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:11,082 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 1052 transitions. [2021-04-15 03:01:11,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:01:11,083 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:01:11,083 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:01:11,298 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable287 [2021-04-15 03:01:11,298 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:01:11,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:01:11,299 INFO L82 PathProgramCache]: Analyzing trace with hash -972310598, now seen corresponding path program 14 times [2021-04-15 03:01:11,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:01:11,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134479998] [2021-04-15 03:01:11,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:01:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:01:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:11,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134479998] [2021-04-15 03:01:11,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785819032] [2021-04-15 03:01:11,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:01:11,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:01:11,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:01:11,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 37 conjunts are in the unsatisfiable core [2021-04-15 03:01:11,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:01:12,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:12,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:01:12,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:01:12,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492136110] [2021-04-15 03:01:12,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:01:12,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:01:12,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:01:12,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:01:12,090 INFO L87 Difference]: Start difference. First operand 343 states and 1052 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:12,488 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2021-04-15 03:01:12,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:01:12,596 INFO L93 Difference]: Finished difference Result 538 states and 1592 transitions. [2021-04-15 03:01:12,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-15 03:01:12,596 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:01:12,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:01:12,599 INFO L225 Difference]: With dead ends: 538 [2021-04-15 03:01:12,599 INFO L226 Difference]: Without dead ends: 523 [2021-04-15 03:01:12,600 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 815.4ms TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2021-04-15 03:01:12,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-04-15 03:01:12,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 343. [2021-04-15 03:01:12,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 3.0760233918128654) internal successors, (1052), 342 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:12,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 1052 transitions. [2021-04-15 03:01:12,608 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 1052 transitions. Word has length 20 [2021-04-15 03:01:12,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:01:12,608 INFO L480 AbstractCegarLoop]: Abstraction has 343 states and 1052 transitions. [2021-04-15 03:01:12,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:12,609 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 1052 transitions. [2021-04-15 03:01:12,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:01:12,610 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:01:12,610 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:01:12,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable310 [2021-04-15 03:01:12,835 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:01:12,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:01:12,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1147131350, now seen corresponding path program 15 times [2021-04-15 03:01:12,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:01:12,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484781477] [2021-04-15 03:01:12,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:01:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:01:13,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:13,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484781477] [2021-04-15 03:01:13,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863999902] [2021-04-15 03:01:13,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:01:13,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-04-15 03:01:13,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:01:13,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:01:13,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:01:13,769 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2021-04-15 03:01:13,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:13,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:01:13,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:01:13,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709096947] [2021-04-15 03:01:13,993 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:01:13,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:01:13,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:01:13,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:01:13,993 INFO L87 Difference]: Start difference. First operand 343 states and 1052 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:14,276 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-04-15 03:01:14,467 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-04-15 03:01:14,823 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2021-04-15 03:01:15,379 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2021-04-15 03:01:15,631 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2021-04-15 03:01:15,945 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 55 [2021-04-15 03:01:16,376 WARN L205 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2021-04-15 03:01:16,615 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 73 [2021-04-15 03:01:16,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:01:16,622 INFO L93 Difference]: Finished difference Result 791 states and 2308 transitions. [2021-04-15 03:01:16,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-15 03:01:16,622 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:01:16,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:01:16,625 INFO L225 Difference]: With dead ends: 791 [2021-04-15 03:01:16,625 INFO L226 Difference]: Without dead ends: 731 [2021-04-15 03:01:16,625 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 3143.3ms TimeCoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930 [2021-04-15 03:01:16,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2021-04-15 03:01:16,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 355. [2021-04-15 03:01:16,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 3.1016949152542375) internal successors, (1098), 354 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:16,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 1098 transitions. [2021-04-15 03:01:16,633 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 1098 transitions. Word has length 20 [2021-04-15 03:01:16,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:01:16,634 INFO L480 AbstractCegarLoop]: Abstraction has 355 states and 1098 transitions. [2021-04-15 03:01:16,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:16,634 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 1098 transitions. [2021-04-15 03:01:16,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:01:16,635 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:01:16,635 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:01:16,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:01:16,849 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:01:16,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:01:16,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1635816502, now seen corresponding path program 16 times [2021-04-15 03:01:16,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:01:16,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689480731] [2021-04-15 03:01:16,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:01:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:01:17,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:17,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689480731] [2021-04-15 03:01:17,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594095851] [2021-04-15 03:01:17,115 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:01:17,157 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 03:01:17,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:01:17,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:01:17,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:01:17,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:17,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:01:17,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:01:17,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655190845] [2021-04-15 03:01:17,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:01:17,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:01:17,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:01:17,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:01:17,703 INFO L87 Difference]: Start difference. First operand 355 states and 1098 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:18,063 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-04-15 03:01:18,246 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-04-15 03:01:18,490 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2021-04-15 03:01:18,747 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2021-04-15 03:01:18,932 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-04-15 03:01:19,134 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2021-04-15 03:01:19,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:01:19,148 INFO L93 Difference]: Finished difference Result 674 states and 1977 transitions. [2021-04-15 03:01:19,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-04-15 03:01:19,149 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:01:19,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:01:19,151 INFO L225 Difference]: With dead ends: 674 [2021-04-15 03:01:19,151 INFO L226 Difference]: Without dead ends: 659 [2021-04-15 03:01:19,152 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1781.8ms TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2021-04-15 03:01:19,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-04-15 03:01:19,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 355. [2021-04-15 03:01:19,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 3.1016949152542375) internal successors, (1098), 354 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:19,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 1098 transitions. [2021-04-15 03:01:19,162 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 1098 transitions. Word has length 20 [2021-04-15 03:01:19,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:01:19,162 INFO L480 AbstractCegarLoop]: Abstraction has 355 states and 1098 transitions. [2021-04-15 03:01:19,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:19,162 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 1098 transitions. [2021-04-15 03:01:19,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:01:19,163 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:01:19,163 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:01:19,369 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350,21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:01:19,369 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:01:19,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:01:19,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1226089308, now seen corresponding path program 17 times [2021-04-15 03:01:19,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:01:19,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445423658] [2021-04-15 03:01:19,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:01:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:01:19,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:19,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445423658] [2021-04-15 03:01:19,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907331402] [2021-04-15 03:01:19,598 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:01:19,633 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:01:19,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:01:19,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:01:19,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:01:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:20,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:01:20,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-04-15 03:01:20,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430354263] [2021-04-15 03:01:20,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-15 03:01:20,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:01:20,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-15 03:01:20,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-04-15 03:01:20,207 INFO L87 Difference]: Start difference. First operand 355 states and 1098 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:20,763 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2021-04-15 03:01:20,985 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2021-04-15 03:01:21,253 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2021-04-15 03:01:21,457 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2021-04-15 03:01:21,715 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2021-04-15 03:01:21,906 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2021-04-15 03:01:22,114 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2021-04-15 03:01:22,393 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-04-15 03:01:22,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:01:22,408 INFO L93 Difference]: Finished difference Result 753 states and 2184 transitions. [2021-04-15 03:01:22,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-04-15 03:01:22,409 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:01:22,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:01:22,411 INFO L225 Difference]: With dead ends: 753 [2021-04-15 03:01:22,411 INFO L226 Difference]: Without dead ends: 723 [2021-04-15 03:01:22,411 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 2402.7ms TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2021-04-15 03:01:22,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-04-15 03:01:22,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 352. [2021-04-15 03:01:22,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 3.094017094017094) internal successors, (1086), 351 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:22,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 1086 transitions. [2021-04-15 03:01:22,422 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 1086 transitions. Word has length 20 [2021-04-15 03:01:22,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:01:22,422 INFO L480 AbstractCegarLoop]: Abstraction has 352 states and 1086 transitions. [2021-04-15 03:01:22,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:22,422 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 1086 transitions. [2021-04-15 03:01:22,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:01:22,423 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:01:22,423 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:01:22,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:01:22,633 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:01:22,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:01:22,633 INFO L82 PathProgramCache]: Analyzing trace with hash 2054143060, now seen corresponding path program 18 times [2021-04-15 03:01:22,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:01:22,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763860511] [2021-04-15 03:01:22,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:01:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:01:22,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:22,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763860511] [2021-04-15 03:01:22,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644477756] [2021-04-15 03:01:22,843 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:01:22,900 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-04-15 03:01:22,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:01:22,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:01:22,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:01:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:23,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:01:23,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:01:23,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263855949] [2021-04-15 03:01:23,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:01:23,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:01:23,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:01:23,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:01:23,468 INFO L87 Difference]: Start difference. First operand 352 states and 1086 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:24,054 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2021-04-15 03:01:24,402 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2021-04-15 03:01:24,566 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-04-15 03:01:24,789 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2021-04-15 03:01:25,038 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2021-04-15 03:01:25,227 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2021-04-15 03:01:25,430 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2021-04-15 03:01:25,561 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-04-15 03:01:25,911 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2021-04-15 03:01:26,095 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2021-04-15 03:01:26,241 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-04-15 03:01:26,543 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2021-04-15 03:01:26,777 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2021-04-15 03:01:26,977 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2021-04-15 03:01:27,103 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2021-04-15 03:01:27,220 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2021-04-15 03:01:27,498 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-04-15 03:01:27,721 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-04-15 03:01:27,906 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-04-15 03:01:28,187 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2021-04-15 03:01:28,438 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2021-04-15 03:01:28,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:01:28,587 INFO L93 Difference]: Finished difference Result 1117 states and 3217 transitions. [2021-04-15 03:01:28,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-04-15 03:01:28,587 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:01:28,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:01:28,589 INFO L225 Difference]: With dead ends: 1117 [2021-04-15 03:01:28,589 INFO L226 Difference]: Without dead ends: 1072 [2021-04-15 03:01:28,590 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 5155.1ms TimeCoverageRelationStatistics Valid=513, Invalid=2139, Unknown=0, NotChecked=0, Total=2652 [2021-04-15 03:01:28,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-04-15 03:01:28,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 389. [2021-04-15 03:01:28,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.172680412371134) internal successors, (1231), 388 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:28,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1231 transitions. [2021-04-15 03:01:28,598 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1231 transitions. Word has length 20 [2021-04-15 03:01:28,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:01:28,598 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1231 transitions. [2021-04-15 03:01:28,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:28,598 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1231 transitions. [2021-04-15 03:01:28,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:01:28,600 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:01:28,600 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:01:28,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:01:28,813 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:01:28,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:01:28,813 INFO L82 PathProgramCache]: Analyzing trace with hash -547999362, now seen corresponding path program 19 times [2021-04-15 03:01:28,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:01:28,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714546380] [2021-04-15 03:01:28,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:01:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:01:29,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:29,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714546380] [2021-04-15 03:01:29,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168763018] [2021-04-15 03:01:29,007 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:01:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:01:29,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:01:29,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:01:29,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:29,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:01:29,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:01:29,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860360864] [2021-04-15 03:01:29,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:01:29,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:01:29,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:01:29,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:01:29,532 INFO L87 Difference]: Start difference. First operand 389 states and 1231 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:30,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:01:30,526 INFO L93 Difference]: Finished difference Result 624 states and 1880 transitions. [2021-04-15 03:01:30,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-04-15 03:01:30,527 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:01:30,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:01:30,528 INFO L225 Difference]: With dead ends: 624 [2021-04-15 03:01:30,528 INFO L226 Difference]: Without dead ends: 609 [2021-04-15 03:01:30,528 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1159.3ms TimeCoverageRelationStatistics Valid=145, Invalid=667, Unknown=0, NotChecked=0, Total=812 [2021-04-15 03:01:30,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2021-04-15 03:01:30,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 392. [2021-04-15 03:01:30,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.1687979539641944) internal successors, (1239), 391 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:30,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1239 transitions. [2021-04-15 03:01:30,536 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1239 transitions. Word has length 20 [2021-04-15 03:01:30,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:01:30,537 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1239 transitions. [2021-04-15 03:01:30,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:30,537 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1239 transitions. [2021-04-15 03:01:30,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:01:30,538 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:01:30,538 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:01:30,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable417 [2021-04-15 03:01:30,760 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:01:30,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:01:30,760 INFO L82 PathProgramCache]: Analyzing trace with hash 109805262, now seen corresponding path program 20 times [2021-04-15 03:01:30,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:01:30,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030024700] [2021-04-15 03:01:30,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:01:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:01:30,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:30,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030024700] [2021-04-15 03:01:30,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447499643] [2021-04-15 03:01:30,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:01:30,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:01:30,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:01:30,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:01:31,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:01:31,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:31,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:01:31,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:01:31,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214299285] [2021-04-15 03:01:31,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:01:31,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:01:31,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:01:31,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:01:31,512 INFO L87 Difference]: Start difference. First operand 392 states and 1239 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:32,037 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2021-04-15 03:01:32,178 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-04-15 03:01:32,381 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2021-04-15 03:01:32,517 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2021-04-15 03:01:32,643 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-04-15 03:01:32,872 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2021-04-15 03:01:33,085 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-04-15 03:01:33,289 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2021-04-15 03:01:33,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:01:33,322 INFO L93 Difference]: Finished difference Result 773 states and 2251 transitions. [2021-04-15 03:01:33,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-04-15 03:01:33,322 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:01:33,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:01:33,324 INFO L225 Difference]: With dead ends: 773 [2021-04-15 03:01:33,324 INFO L226 Difference]: Without dead ends: 728 [2021-04-15 03:01:33,325 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1916.4ms TimeCoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2021-04-15 03:01:33,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2021-04-15 03:01:33,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 410. [2021-04-15 03:01:33,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 3.1466992665036675) internal successors, (1287), 409 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:33,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 1287 transitions. [2021-04-15 03:01:33,338 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 1287 transitions. Word has length 20 [2021-04-15 03:01:33,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:01:33,338 INFO L480 AbstractCegarLoop]: Abstraction has 410 states and 1287 transitions. [2021-04-15 03:01:33,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:33,338 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 1287 transitions. [2021-04-15 03:01:33,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:01:33,340 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:01:33,340 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:01:33,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable436,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:01:33,545 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:01:33,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:01:33,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1617829746, now seen corresponding path program 21 times [2021-04-15 03:01:33,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:01:33,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649809186] [2021-04-15 03:01:33,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:01:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:01:33,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:33,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649809186] [2021-04-15 03:01:33,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231828180] [2021-04-15 03:01:33,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:01:33,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-04-15 03:01:33,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:01:33,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:01:33,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:01:34,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:34,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:01:34,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:01:34,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954950765] [2021-04-15 03:01:34,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:01:34,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:01:34,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:01:34,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:01:34,485 INFO L87 Difference]: Start difference. First operand 410 states and 1287 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:34,856 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2021-04-15 03:01:35,317 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2021-04-15 03:01:35,482 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2021-04-15 03:01:35,632 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2021-04-15 03:01:35,801 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2021-04-15 03:01:35,929 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2021-04-15 03:01:35,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:01:35,975 INFO L93 Difference]: Finished difference Result 721 states and 2142 transitions. [2021-04-15 03:01:35,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-04-15 03:01:35,975 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:01:35,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:01:35,977 INFO L225 Difference]: With dead ends: 721 [2021-04-15 03:01:35,977 INFO L226 Difference]: Without dead ends: 676 [2021-04-15 03:01:35,977 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1818.6ms TimeCoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2021-04-15 03:01:35,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-04-15 03:01:35,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 416. [2021-04-15 03:01:35,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 3.16144578313253) internal successors, (1312), 415 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:35,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 1312 transitions. [2021-04-15 03:01:35,986 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 1312 transitions. Word has length 20 [2021-04-15 03:01:35,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:01:35,987 INFO L480 AbstractCegarLoop]: Abstraction has 416 states and 1312 transitions. [2021-04-15 03:01:35,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:35,987 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 1312 transitions. [2021-04-15 03:01:35,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:01:35,988 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:01:35,988 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:01:36,196 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable459 [2021-04-15 03:01:36,197 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:01:36,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:01:36,197 INFO L82 PathProgramCache]: Analyzing trace with hash 526986350, now seen corresponding path program 22 times [2021-04-15 03:01:36,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:01:36,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601753732] [2021-04-15 03:01:36,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:01:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:01:36,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:36,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601753732] [2021-04-15 03:01:36,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831797363] [2021-04-15 03:01:36,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:01:36,432 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 03:01:36,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:01:36,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:01:36,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:01:37,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:37,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:01:37,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:01:37,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553131105] [2021-04-15 03:01:37,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:01:37,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:01:37,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:01:37,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:01:37,007 INFO L87 Difference]: Start difference. First operand 416 states and 1312 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:37,421 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-04-15 03:01:37,569 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2021-04-15 03:01:37,726 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2021-04-15 03:01:37,923 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2021-04-15 03:01:38,075 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2021-04-15 03:01:38,268 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2021-04-15 03:01:38,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:01:38,363 INFO L93 Difference]: Finished difference Result 657 states and 1959 transitions. [2021-04-15 03:01:38,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-04-15 03:01:38,364 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:01:38,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:01:38,365 INFO L225 Difference]: With dead ends: 657 [2021-04-15 03:01:38,365 INFO L226 Difference]: Without dead ends: 627 [2021-04-15 03:01:38,366 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1689.9ms TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2021-04-15 03:01:38,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-04-15 03:01:38,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 419. [2021-04-15 03:01:38,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 3.165071770334928) internal successors, (1323), 418 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:38,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 1323 transitions. [2021-04-15 03:01:38,377 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 1323 transitions. Word has length 20 [2021-04-15 03:01:38,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:01:38,378 INFO L480 AbstractCegarLoop]: Abstraction has 419 states and 1323 transitions. [2021-04-15 03:01:38,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:38,378 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 1323 transitions. [2021-04-15 03:01:38,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:01:38,379 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:01:38,379 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:01:38,592 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable481,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:01:38,593 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:01:38,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:01:38,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1184790974, now seen corresponding path program 23 times [2021-04-15 03:01:38,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:01:38,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108396306] [2021-04-15 03:01:38,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:01:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:01:38,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:38,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108396306] [2021-04-15 03:01:38,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059262321] [2021-04-15 03:01:38,956 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:01:39,002 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:01:39,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:01:39,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:01:39,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:01:39,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:39,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:01:39,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-04-15 03:01:39,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496348666] [2021-04-15 03:01:39,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-15 03:01:39,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:01:39,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-15 03:01:39,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-04-15 03:01:39,473 INFO L87 Difference]: Start difference. First operand 419 states and 1323 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:40,140 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2021-04-15 03:01:40,310 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2021-04-15 03:01:40,458 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2021-04-15 03:01:40,773 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2021-04-15 03:01:40,928 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2021-04-15 03:01:41,131 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2021-04-15 03:01:41,383 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2021-04-15 03:01:41,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:01:41,661 INFO L93 Difference]: Finished difference Result 937 states and 2707 transitions. [2021-04-15 03:01:41,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-04-15 03:01:41,662 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:01:41,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:01:41,664 INFO L225 Difference]: With dead ends: 937 [2021-04-15 03:01:41,664 INFO L226 Difference]: Without dead ends: 877 [2021-04-15 03:01:41,664 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2321.2ms TimeCoverageRelationStatistics Valid=239, Invalid=951, Unknown=0, NotChecked=0, Total=1190 [2021-04-15 03:01:41,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2021-04-15 03:01:41,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 482. [2021-04-15 03:01:41,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 3.1517671517671517) internal successors, (1516), 481 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:41,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 1516 transitions. [2021-04-15 03:01:41,675 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 1516 transitions. Word has length 20 [2021-04-15 03:01:41,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:01:41,675 INFO L480 AbstractCegarLoop]: Abstraction has 482 states and 1516 transitions. [2021-04-15 03:01:41,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:41,675 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 1516 transitions. [2021-04-15 03:01:41,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:01:41,676 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:01:41,677 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:01:41,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable503 [2021-04-15 03:01:41,893 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:01:41,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:01:41,893 INFO L82 PathProgramCache]: Analyzing trace with hash 585717068, now seen corresponding path program 24 times [2021-04-15 03:01:41,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:01:41,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045431635] [2021-04-15 03:01:41,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:01:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:01:42,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:42,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045431635] [2021-04-15 03:01:42,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742608916] [2021-04-15 03:01:42,133 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:01:42,173 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-04-15 03:01:42,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:01:42,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:01:42,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:01:42,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:01:42,559 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:42,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:01:42,568 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:42,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:01:42,577 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:42,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:01:42,589 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:42,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:01:42,598 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:42,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:01:42,610 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:42,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:01:42,620 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:42,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:01:42,630 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:42,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:01:42,639 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:42,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:01:42,648 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:42,657 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:01:42,658 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:42,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:01:42,667 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:42,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:01:42,676 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:42,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:01:42,690 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:42,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:01:42,698 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:42,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:01:42,707 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:42,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:01:42,715 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:42,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:01:42,724 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:42,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:01:42,738 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:42,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:01:42,747 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:42,753 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,753 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:01:42,756 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:42,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:01:42,764 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:42,769 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:01:42,770 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:42,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:01:42,780 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:42,785 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:42,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:01:42,787 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:43,069 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2021-04-15 03:01:43,070 INFO L628 ElimStorePlain]: treesize reduction 30, result has 90.9 percent of original size [2021-04-15 03:01:43,079 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 10 xjuncts. [2021-04-15 03:01:43,079 INFO L247 ElimStorePlain]: Needed 26 recursive calls to eliminate 2 variables, input treesize:971, output treesize:300 [2021-04-15 03:01:43,439 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2021-04-15 03:01:44,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:44,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:44,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:01:44,548 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:44,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:44,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:01:44,555 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:44,742 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2021-04-15 03:01:44,742 INFO L628 ElimStorePlain]: treesize reduction 106, result has 57.4 percent of original size [2021-04-15 03:01:44,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:01:44,747 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:44,815 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:01:44,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:01:44,820 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:44,894 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:01:44,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:01:44,898 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:44,986 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:01:44,988 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-04-15 03:01:44,988 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 4 variables, input treesize:295, output treesize:131 [2021-04-15 03:01:45,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:45,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:01:45,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:01:45,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509855649] [2021-04-15 03:01:45,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:01:45,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:01:45,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:01:45,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:01:45,241 INFO L87 Difference]: Start difference. First operand 482 states and 1516 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:45,886 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2021-04-15 03:01:46,053 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-04-15 03:01:46,487 WARN L205 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2021-04-15 03:01:46,677 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2021-04-15 03:01:47,113 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2021-04-15 03:01:47,626 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2021-04-15 03:01:48,110 WARN L205 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 98 [2021-04-15 03:01:48,920 WARN L205 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 78 [2021-04-15 03:01:49,150 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2021-04-15 03:01:49,645 WARN L205 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 79 [2021-04-15 03:01:50,161 WARN L205 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 99 [2021-04-15 03:01:50,658 WARN L205 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75 [2021-04-15 03:01:50,924 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 55 [2021-04-15 03:01:51,545 WARN L205 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 84 [2021-04-15 03:01:52,159 WARN L205 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2021-04-15 03:01:52,610 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 73 [2021-04-15 03:01:53,094 WARN L205 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-04-15 03:01:53,410 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 56 [2021-04-15 03:01:53,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:01:53,429 INFO L93 Difference]: Finished difference Result 1483 states and 4358 transitions. [2021-04-15 03:01:53,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-04-15 03:01:53,430 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:01:53,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:01:53,432 INFO L225 Difference]: With dead ends: 1483 [2021-04-15 03:01:53,433 INFO L226 Difference]: Without dead ends: 1318 [2021-04-15 03:01:53,433 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 8439.7ms TimeCoverageRelationStatistics Valid=371, Invalid=1435, Unknown=0, NotChecked=0, Total=1806 [2021-04-15 03:01:53,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2021-04-15 03:01:53,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 545. [2021-04-15 03:01:53,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 544 states have (on average 3.2775735294117645) internal successors, (1783), 544 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:53,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 1783 transitions. [2021-04-15 03:01:53,453 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 1783 transitions. Word has length 20 [2021-04-15 03:01:53,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:01:53,453 INFO L480 AbstractCegarLoop]: Abstraction has 545 states and 1783 transitions. [2021-04-15 03:01:53,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:53,453 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 1783 transitions. [2021-04-15 03:01:53,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:01:53,454 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:01:53,454 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:01:53,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable522,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:01:53,679 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:01:53,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:01:53,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1831299158, now seen corresponding path program 25 times [2021-04-15 03:01:53,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:01:53,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699956926] [2021-04-15 03:01:53,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:01:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:01:53,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:53,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699956926] [2021-04-15 03:01:53,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247696174] [2021-04-15 03:01:53,931 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:01:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:01:53,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:01:53,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:01:54,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:01:54,423 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:54,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:01:54,430 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:54,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:01:54,442 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:54,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:01:54,450 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:54,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:01:54,458 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:54,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:01:54,466 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:54,471 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:01:54,472 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:54,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:01:54,482 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:54,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:01:54,492 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:54,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:01:54,500 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:54,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:01:54,509 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:54,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:01:54,516 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:54,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:01:54,524 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:54,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:01:54,534 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:54,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:01:54,542 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:54,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:01:54,550 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:54,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:01:54,558 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:54,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:01:54,567 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:54,572 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:01:54,573 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:54,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:54,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:01:54,579 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:54,709 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-04-15 03:01:54,710 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:01:54,715 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 8 xjuncts. [2021-04-15 03:01:54,715 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 2 variables, input treesize:721, output treesize:221 [2021-04-15 03:01:55,008 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2021-04-15 03:01:55,256 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-04-15 03:01:56,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:01:56,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:01:56,381 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:56,774 WARN L205 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 81 [2021-04-15 03:01:56,775 INFO L628 ElimStorePlain]: treesize reduction 241, result has 54.6 percent of original size [2021-04-15 03:01:56,775 INFO L518 ElimStorePlain]: Eliminatee v_prenex_14 vanished before elimination [2021-04-15 03:01:56,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:01:56,782 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:56,924 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-04-15 03:01:56,924 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:01:56,924 INFO L518 ElimStorePlain]: Eliminatee v_prenex_11 vanished before elimination [2021-04-15 03:01:56,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:01:56,930 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:57,075 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-04-15 03:01:57,075 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:01:57,076 INFO L518 ElimStorePlain]: Eliminatee v_prenex_18 vanished before elimination [2021-04-15 03:01:57,076 INFO L518 ElimStorePlain]: Eliminatee v_prenex_15 vanished before elimination [2021-04-15 03:01:57,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:01:57,081 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:57,219 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-04-15 03:01:57,219 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:01:57,219 INFO L518 ElimStorePlain]: Eliminatee v_prenex_16 vanished before elimination [2021-04-15 03:01:57,219 INFO L518 ElimStorePlain]: Eliminatee v_prenex_20 vanished before elimination [2021-04-15 03:01:57,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:01:57,225 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:57,361 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-04-15 03:01:57,361 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:01:57,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:01:57,368 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:01:57,500 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-04-15 03:01:57,501 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:01:57,505 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 12 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-04-15 03:01:57,505 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 20 variables, input treesize:537, output treesize:239 [2021-04-15 03:01:57,733 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-04-15 03:01:58,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:01:58,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:01:58,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:01:58,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019812496] [2021-04-15 03:01:58,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:01:58,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:01:58,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:01:58,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:01:58,009 INFO L87 Difference]: Start difference. First operand 545 states and 1783 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:01:59,207 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2021-04-15 03:01:59,642 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 86 [2021-04-15 03:01:59,952 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 82 [2021-04-15 03:02:00,428 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 79 [2021-04-15 03:02:00,831 WARN L205 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2021-04-15 03:02:01,480 WARN L205 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 107 [2021-04-15 03:02:01,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:02:01,504 INFO L93 Difference]: Finished difference Result 1035 states and 3152 transitions. [2021-04-15 03:02:01,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-04-15 03:02:01,504 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:02:01,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:02:01,507 INFO L225 Difference]: With dead ends: 1035 [2021-04-15 03:02:01,507 INFO L226 Difference]: Without dead ends: 1020 [2021-04-15 03:02:01,507 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 4159.2ms TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2021-04-15 03:02:01,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2021-04-15 03:02:01,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 542. [2021-04-15 03:02:01,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 3.2698706099815156) internal successors, (1769), 541 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:02:01,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1769 transitions. [2021-04-15 03:02:01,519 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1769 transitions. Word has length 20 [2021-04-15 03:02:01,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:02:01,519 INFO L480 AbstractCegarLoop]: Abstraction has 542 states and 1769 transitions. [2021-04-15 03:02:01,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:02:01,519 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1769 transitions. [2021-04-15 03:02:01,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:02:01,520 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:02:01,520 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:02:01,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable805,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:02:01,725 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:02:01,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:02:01,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1845968800, now seen corresponding path program 26 times [2021-04-15 03:02:01,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:02:01,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832870499] [2021-04-15 03:02:01,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:02:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:02:02,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:02:02,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832870499] [2021-04-15 03:02:02,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496502365] [2021-04-15 03:02:02,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:02:02,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:02:02,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:02:02,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:02:02,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:02:02,296 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-04-15 03:02:02,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:02:02,660 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:02,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:02:02,668 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:02,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:02:02,678 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:02,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:02:02,686 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:02,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:02:02,695 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:02,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:02:02,703 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:02,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:02:02,711 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:02,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:02:02,719 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:02,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:02:02,727 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:02,733 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,734 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:02:02,736 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:02,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:02:02,745 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:02,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,753 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:02:02,756 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:02,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:02:02,765 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:02,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,773 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:02:02,774 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:02,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:02:02,782 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:02,788 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,788 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:02:02,790 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:02,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:02:02,798 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:02,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,805 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:02:02,807 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:02,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:02:02,815 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:02,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:02,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:02:02,823 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:02,965 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-04-15 03:02:02,965 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:02,969 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 10 xjuncts. [2021-04-15 03:02:02,969 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 2 variables, input treesize:769, output treesize:300 [2021-04-15 03:02:03,253 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2021-04-15 03:02:03,459 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-04-15 03:02:03,668 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-04-15 03:02:04,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:04,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:02:04,447 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:04,581 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2021-04-15 03:02:04,582 INFO L628 ElimStorePlain]: treesize reduction 98, result has 51.5 percent of original size [2021-04-15 03:02:04,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:02:04,588 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:04,640 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:04,641 INFO L518 ElimStorePlain]: Eliminatee ends_with_10 vanished before elimination [2021-04-15 03:02:04,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:02:04,646 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:04,697 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:04,697 INFO L518 ElimStorePlain]: Eliminatee v_prenex_30 vanished before elimination [2021-04-15 03:02:04,699 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-04-15 03:02:04,699 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:210, output treesize:92 [2021-04-15 03:02:04,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:02:04,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:02:04,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:02:04,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197696392] [2021-04-15 03:02:04,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:02:04,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:02:04,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:02:04,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:02:04,858 INFO L87 Difference]: Start difference. First operand 542 states and 1769 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:02:05,910 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2021-04-15 03:02:06,195 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-04-15 03:02:06,584 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2021-04-15 03:02:06,935 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2021-04-15 03:02:07,308 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 95 [2021-04-15 03:02:07,470 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-04-15 03:02:07,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:02:07,492 INFO L93 Difference]: Finished difference Result 867 states and 2701 transitions. [2021-04-15 03:02:07,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-04-15 03:02:07,492 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:02:07,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:02:07,495 INFO L225 Difference]: With dead ends: 867 [2021-04-15 03:02:07,495 INFO L226 Difference]: Without dead ends: 837 [2021-04-15 03:02:07,495 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3336.7ms TimeCoverageRelationStatistics Valid=172, Invalid=884, Unknown=0, NotChecked=0, Total=1056 [2021-04-15 03:02:07,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2021-04-15 03:02:07,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 542. [2021-04-15 03:02:07,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 3.2698706099815156) internal successors, (1769), 541 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:02:07,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1769 transitions. [2021-04-15 03:02:07,510 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1769 transitions. Word has length 20 [2021-04-15 03:02:07,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:02:07,510 INFO L480 AbstractCegarLoop]: Abstraction has 542 states and 1769 transitions. [2021-04-15 03:02:07,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:02:07,511 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1769 transitions. [2021-04-15 03:02:07,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:02:07,512 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:02:07,512 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:02:07,741 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable979,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:02:07,741 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:02:07,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:02:07,741 INFO L82 PathProgramCache]: Analyzing trace with hash 930887312, now seen corresponding path program 27 times [2021-04-15 03:02:07,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:02:07,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058260363] [2021-04-15 03:02:07,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:02:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:02:07,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:02:07,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058260363] [2021-04-15 03:02:07,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535351592] [2021-04-15 03:02:08,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:02:08,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-04-15 03:02:08,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:02:08,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:02:08,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:02:08,247 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-04-15 03:02:08,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:02:08,574 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:08,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:02:08,581 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:08,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:02:08,588 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:08,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:02:08,593 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:08,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:02:08,598 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:08,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:02:08,604 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:08,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:02:08,609 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:08,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:02:08,615 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:08,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:02:08,620 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:08,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:02:08,625 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:08,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:02:08,631 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:08,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:02:08,635 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:08,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:02:08,648 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:08,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:02:08,654 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:08,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:02:08,659 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:08,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:02:08,664 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:08,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:02:08,674 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:08,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:02:08,681 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:08,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:02:08,686 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:08,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:08,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:02:08,690 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:08,831 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-04-15 03:02:08,831 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:08,838 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 10 xjuncts. [2021-04-15 03:02:08,838 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 2 variables, input treesize:769, output treesize:300 [2021-04-15 03:02:09,150 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2021-04-15 03:02:10,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:10,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:10,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:02:10,119 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:10,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:10,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:02:10,123 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:10,224 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2021-04-15 03:02:10,225 INFO L628 ElimStorePlain]: treesize reduction 67, result has 58.9 percent of original size [2021-04-15 03:02:10,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:02:10,230 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:10,275 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:10,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:10,280 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:10,323 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:10,325 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-04-15 03:02:10,325 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:198, output treesize:86 [2021-04-15 03:02:10,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:02:10,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:02:10,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:02:10,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597535911] [2021-04-15 03:02:10,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:02:10,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:02:10,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:02:10,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:02:10,482 INFO L87 Difference]: Start difference. First operand 542 states and 1769 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:02:11,235 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2021-04-15 03:02:11,415 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-04-15 03:02:11,725 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2021-04-15 03:02:12,091 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2021-04-15 03:02:12,343 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2021-04-15 03:02:12,629 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2021-04-15 03:02:12,877 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2021-04-15 03:02:13,150 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-04-15 03:02:13,535 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 87 [2021-04-15 03:02:14,057 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 84 [2021-04-15 03:02:14,276 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2021-04-15 03:02:14,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:02:14,303 INFO L93 Difference]: Finished difference Result 1513 states and 4500 transitions. [2021-04-15 03:02:14,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-04-15 03:02:14,304 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:02:14,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:02:14,308 INFO L225 Difference]: With dead ends: 1513 [2021-04-15 03:02:14,308 INFO L226 Difference]: Without dead ends: 1453 [2021-04-15 03:02:14,309 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 4094.7ms TimeCoverageRelationStatistics Valid=291, Invalid=1269, Unknown=0, NotChecked=0, Total=1560 [2021-04-15 03:02:14,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-04-15 03:02:14,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 583. [2021-04-15 03:02:14,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 582 states have (on average 3.314432989690722) internal successors, (1929), 582 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:02:14,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1929 transitions. [2021-04-15 03:02:14,330 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1929 transitions. Word has length 20 [2021-04-15 03:02:14,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:02:14,330 INFO L480 AbstractCegarLoop]: Abstraction has 583 states and 1929 transitions. [2021-04-15 03:02:14,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:02:14,330 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1929 transitions. [2021-04-15 03:02:14,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:02:14,332 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:02:14,332 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:02:14,557 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1249 [2021-04-15 03:02:14,557 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:02:14,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:02:14,557 INFO L82 PathProgramCache]: Analyzing trace with hash -998509850, now seen corresponding path program 28 times [2021-04-15 03:02:14,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:02:14,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293317736] [2021-04-15 03:02:14,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:02:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:02:14,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:02:14,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293317736] [2021-04-15 03:02:14,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241165856] [2021-04-15 03:02:14,858 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:02:14,915 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 03:02:14,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:02:14,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:02:14,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:02:15,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:02:15,468 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:15,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:02:15,475 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:15,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:02:15,482 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:15,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:02:15,488 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:15,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:02:15,494 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:15,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:02:15,501 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:15,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:02:15,507 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:15,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:02:15,513 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:15,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:02:15,519 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:15,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:02:15,526 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:15,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:02:15,532 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:15,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:02:15,539 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:15,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:02:15,545 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:15,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:02:15,551 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:15,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:02:15,556 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:15,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:15,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:02:15,560 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:15,700 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-04-15 03:02:15,700 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:15,705 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 8 xjuncts. [2021-04-15 03:02:15,705 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:689, output treesize:281 [2021-04-15 03:02:15,891 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-04-15 03:02:16,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:16,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:02:16,938 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:17,265 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 87 [2021-04-15 03:02:17,265 INFO L628 ElimStorePlain]: treesize reduction 267, result has 48.9 percent of original size [2021-04-15 03:02:17,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:17,273 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:17,398 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-04-15 03:02:17,398 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:17,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:17,403 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:17,519 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-04-15 03:02:17,520 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:17,520 INFO L518 ElimStorePlain]: Eliminatee v_prenex_48 vanished before elimination [2021-04-15 03:02:17,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:17,527 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:17,653 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-04-15 03:02:17,654 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:17,654 INFO L518 ElimStorePlain]: Eliminatee v_prenex_50 vanished before elimination [2021-04-15 03:02:17,654 INFO L518 ElimStorePlain]: Eliminatee v_prenex_42 vanished before elimination [2021-04-15 03:02:17,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:02:17,663 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:17,789 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-04-15 03:02:17,789 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:17,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:02:17,794 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:17,918 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-04-15 03:02:17,919 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:17,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:17,925 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:18,047 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-04-15 03:02:18,047 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:18,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:02:18,053 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:18,170 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-04-15 03:02:18,171 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:18,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:02:18,177 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:18,295 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-04-15 03:02:18,295 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:18,298 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-04-15 03:02:18,299 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 18 variables, input treesize:561, output treesize:191 [2021-04-15 03:02:18,585 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2021-04-15 03:02:18,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:02:18,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:02:18,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:02:18,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019407973] [2021-04-15 03:02:18,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:02:18,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:02:18,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:02:18,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:02:18,921 INFO L87 Difference]: Start difference. First operand 583 states and 1929 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:02:20,263 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2021-04-15 03:02:20,603 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2021-04-15 03:02:20,910 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2021-04-15 03:02:21,272 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2021-04-15 03:02:21,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:02:21,636 INFO L93 Difference]: Finished difference Result 1337 states and 3985 transitions. [2021-04-15 03:02:21,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-04-15 03:02:21,637 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:02:21,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:02:21,644 INFO L225 Difference]: With dead ends: 1337 [2021-04-15 03:02:21,644 INFO L226 Difference]: Without dead ends: 1262 [2021-04-15 03:02:21,644 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 3227.5ms TimeCoverageRelationStatistics Valid=313, Invalid=1247, Unknown=0, NotChecked=0, Total=1560 [2021-04-15 03:02:21,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2021-04-15 03:02:21,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 586. [2021-04-15 03:02:21,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 585 states have (on average 3.336752136752137) internal successors, (1952), 585 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:02:21,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1952 transitions. [2021-04-15 03:02:21,664 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1952 transitions. Word has length 20 [2021-04-15 03:02:21,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:02:21,664 INFO L480 AbstractCegarLoop]: Abstraction has 586 states and 1952 transitions. [2021-04-15 03:02:21,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:02:21,664 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1952 transitions. [2021-04-15 03:02:21,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:02:21,666 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:02:21,666 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:02:21,885 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1536 [2021-04-15 03:02:21,885 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:02:21,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:02:21,885 INFO L82 PathProgramCache]: Analyzing trace with hash 761543090, now seen corresponding path program 29 times [2021-04-15 03:02:21,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:02:21,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400332764] [2021-04-15 03:02:21,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:02:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:02:22,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:02:22,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400332764] [2021-04-15 03:02:22,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96295558] [2021-04-15 03:02:22,175 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:02:22,212 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-04-15 03:02:22,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:02:22,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:02:22,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:02:22,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:02:22,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:02:22,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-04-15 03:02:22,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406291712] [2021-04-15 03:02:22,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-15 03:02:22,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:02:22,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-15 03:02:22,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-04-15 03:02:22,832 INFO L87 Difference]: Start difference. First operand 586 states and 1952 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:02:23,645 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2021-04-15 03:02:24,089 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2021-04-15 03:02:24,317 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2021-04-15 03:02:24,668 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2021-04-15 03:02:24,873 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2021-04-15 03:02:25,016 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2021-04-15 03:02:25,316 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2021-04-15 03:02:25,549 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2021-04-15 03:02:25,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:02:25,761 INFO L93 Difference]: Finished difference Result 1281 states and 3876 transitions. [2021-04-15 03:02:25,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-04-15 03:02:25,761 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:02:25,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:02:25,763 INFO L225 Difference]: With dead ends: 1281 [2021-04-15 03:02:25,763 INFO L226 Difference]: Without dead ends: 1176 [2021-04-15 03:02:25,763 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 2952.7ms TimeCoverageRelationStatistics Valid=287, Invalid=1435, Unknown=0, NotChecked=0, Total=1722 [2021-04-15 03:02:25,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2021-04-15 03:02:25,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 589. [2021-04-15 03:02:25,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 588 states have (on average 3.3537414965986394) internal successors, (1972), 588 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:02:25,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 1972 transitions. [2021-04-15 03:02:25,774 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 1972 transitions. Word has length 20 [2021-04-15 03:02:25,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:02:25,774 INFO L480 AbstractCegarLoop]: Abstraction has 589 states and 1972 transitions. [2021-04-15 03:02:25,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:02:25,774 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 1972 transitions. [2021-04-15 03:02:25,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:02:25,775 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:02:25,775 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:02:25,975 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1897 [2021-04-15 03:02:25,975 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:02:25,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:02:25,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1991665402, now seen corresponding path program 30 times [2021-04-15 03:02:25,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:02:25,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982491027] [2021-04-15 03:02:25,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:02:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:02:26,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:02:26,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982491027] [2021-04-15 03:02:26,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052476507] [2021-04-15 03:02:26,172 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:02:26,210 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-04-15 03:02:26,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:02:26,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:02:26,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:02:26,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:26,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:26,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:02:26,566 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:26,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:26,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:26,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:02:26,573 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:26,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:26,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:26,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:02:26,583 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:26,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:26,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:26,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:02:26,591 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:26,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:26,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:26,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:02:26,598 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:26,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:26,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:26,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:02:26,605 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:26,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:26,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:26,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:02:26,611 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:26,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:26,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:26,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:02:26,617 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:26,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:26,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:26,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:02:26,623 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:26,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:26,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:26,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:02:26,630 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:26,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:26,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:26,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:02:26,636 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:26,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:26,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:02:26,643 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:26,720 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:26,727 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 6 xjuncts. [2021-04-15 03:02:26,727 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 2 variables, input treesize:413, output treesize:163 [2021-04-15 03:02:27,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:27,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:27,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:02:27,673 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:27,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:27,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:27,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:02:27,681 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:27,683 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:02:27,684 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:27,808 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-04-15 03:02:27,808 INFO L628 ElimStorePlain]: treesize reduction 67, result has 60.1 percent of original size [2021-04-15 03:02:27,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:27,814 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:27,866 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:27,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:02:27,870 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:27,911 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:27,911 INFO L518 ElimStorePlain]: Eliminatee v_prenex_56 vanished before elimination [2021-04-15 03:02:27,911 INFO L518 ElimStorePlain]: Eliminatee ends_with_10 vanished before elimination [2021-04-15 03:02:27,912 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-04-15 03:02:27,912 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 5 variables, input treesize:244, output treesize:92 [2021-04-15 03:02:28,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:02:28,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:02:28,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:02:28,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518631575] [2021-04-15 03:02:28,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:02:28,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:02:28,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:02:28,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:02:28,037 INFO L87 Difference]: Start difference. First operand 589 states and 1972 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:02:28,672 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2021-04-15 03:02:28,821 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2021-04-15 03:02:28,999 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2021-04-15 03:02:29,279 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 50 [2021-04-15 03:02:29,584 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2021-04-15 03:02:29,764 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2021-04-15 03:02:30,041 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 82 [2021-04-15 03:02:30,306 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2021-04-15 03:02:30,504 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2021-04-15 03:02:30,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:02:30,614 INFO L93 Difference]: Finished difference Result 1197 states and 3636 transitions. [2021-04-15 03:02:30,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-04-15 03:02:30,614 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:02:30,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:02:30,617 INFO L225 Difference]: With dead ends: 1197 [2021-04-15 03:02:30,617 INFO L226 Difference]: Without dead ends: 1094 [2021-04-15 03:02:30,617 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2816.5ms TimeCoverageRelationStatistics Valid=172, Invalid=950, Unknown=0, NotChecked=0, Total=1122 [2021-04-15 03:02:30,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2021-04-15 03:02:30,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 678. [2021-04-15 03:02:30,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 3.4032496307237814) internal successors, (2304), 677 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:02:30,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 2304 transitions. [2021-04-15 03:02:30,638 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 2304 transitions. Word has length 20 [2021-04-15 03:02:30,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:02:30,638 INFO L480 AbstractCegarLoop]: Abstraction has 678 states and 2304 transitions. [2021-04-15 03:02:30,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:02:30,639 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 2304 transitions. [2021-04-15 03:02:30,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:02:30,640 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:02:30,640 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:02:30,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1925 [2021-04-15 03:02:30,865 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:02:30,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:02:30,865 INFO L82 PathProgramCache]: Analyzing trace with hash 48224212, now seen corresponding path program 31 times [2021-04-15 03:02:30,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:02:30,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908415503] [2021-04-15 03:02:30,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:02:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:02:31,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:02:31,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908415503] [2021-04-15 03:02:31,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482580050] [2021-04-15 03:02:31,155 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:02:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:02:31,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 37 conjunts are in the unsatisfiable core [2021-04-15 03:02:31,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:02:31,385 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-04-15 03:02:31,812 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_59], 3=[v_prenex_61], 6=[ends_with_2, v_prenex_60, v_prenex_63]} [2021-04-15 03:02:31,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:02:31,822 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:32,427 WARN L205 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 112 [2021-04-15 03:02:32,427 INFO L628 ElimStorePlain]: treesize reduction 366, result has 60.1 percent of original size [2021-04-15 03:02:32,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:02:32,435 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:32,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:02:32,442 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:32,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:32,450 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:32,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:02:32,457 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:32,720 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-04-15 03:02:32,721 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:32,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:02:32,728 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:32,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:02:32,735 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:32,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:32,743 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:32,992 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-04-15 03:02:32,992 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:32,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:02:32,998 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:33,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:02:33,008 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:33,226 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-04-15 03:02:33,226 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:33,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:02:33,241 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:33,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:02:33,249 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:33,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:33,261 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:33,511 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-04-15 03:02:33,511 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:33,523 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 5 dim-1 vars, End of recursive call: 10 dim-0 vars, and 13 xjuncts. [2021-04-15 03:02:33,523 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 8 variables, input treesize:920, output treesize:492 [2021-04-15 03:02:33,901 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 121 [2021-04-15 03:02:34,360 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 108 [2021-04-15 03:02:34,632 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-04-15 03:02:37,246 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_79, v_prenex_77, v_prenex_78, ends_with_10, v_prenex_72, v_prenex_94, v_prenex_91, v_prenex_92, v_prenex_97, v_prenex_75, v_prenex_98, v_prenex_76, v_prenex_73, v_prenex_96, v_prenex_74, v_prenex_100, v_prenex_102, v_prenex_104, v_prenex_105, ends_with_6, v_prenex_82, v_prenex_83, v_prenex_80, v_prenex_109, v_prenex_81, v_prenex_84, v_prenex_85, v_prenex_114], 15=[v_prenex_87], 21=[v_prenex_88]} [2021-04-15 03:02:37,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:37,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:02:37,267 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:37,860 WARN L205 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 117 [2021-04-15 03:02:37,861 INFO L628 ElimStorePlain]: treesize reduction 1029, result has 25.1 percent of original size [2021-04-15 03:02:37,861 INFO L518 ElimStorePlain]: Eliminatee v_prenex_77 vanished before elimination [2021-04-15 03:02:37,861 INFO L518 ElimStorePlain]: Eliminatee v_prenex_78 vanished before elimination [2021-04-15 03:02:37,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:37,869 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:38,035 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-04-15 03:02:38,035 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:38,035 INFO L518 ElimStorePlain]: Eliminatee v_prenex_72 vanished before elimination [2021-04-15 03:02:38,035 INFO L518 ElimStorePlain]: Eliminatee v_prenex_94 vanished before elimination [2021-04-15 03:02:38,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:02:38,043 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:38,210 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-04-15 03:02:38,211 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:38,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:02:38,219 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:38,380 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-04-15 03:02:38,380 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:38,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:38,389 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:38,556 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-04-15 03:02:38,557 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:38,557 INFO L518 ElimStorePlain]: Eliminatee v_prenex_75 vanished before elimination [2021-04-15 03:02:38,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:38,565 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:38,724 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-04-15 03:02:38,725 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:38,725 INFO L518 ElimStorePlain]: Eliminatee v_prenex_76 vanished before elimination [2021-04-15 03:02:38,725 INFO L518 ElimStorePlain]: Eliminatee v_prenex_73 vanished before elimination [2021-04-15 03:02:38,725 INFO L518 ElimStorePlain]: Eliminatee v_prenex_96 vanished before elimination [2021-04-15 03:02:38,725 INFO L518 ElimStorePlain]: Eliminatee v_prenex_74 vanished before elimination [2021-04-15 03:02:38,725 INFO L518 ElimStorePlain]: Eliminatee v_prenex_100 vanished before elimination [2021-04-15 03:02:38,725 INFO L518 ElimStorePlain]: Eliminatee v_prenex_102 vanished before elimination [2021-04-15 03:02:38,725 INFO L518 ElimStorePlain]: Eliminatee v_prenex_104 vanished before elimination [2021-04-15 03:02:38,725 INFO L518 ElimStorePlain]: Eliminatee v_prenex_105 vanished before elimination [2021-04-15 03:02:38,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:38,733 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:38,890 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-04-15 03:02:38,891 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:38,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:02:38,898 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:39,056 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-04-15 03:02:39,056 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:39,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:02:39,069 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:39,222 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-04-15 03:02:39,223 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:39,223 INFO L518 ElimStorePlain]: Eliminatee v_prenex_80 vanished before elimination [2021-04-15 03:02:39,223 INFO L518 ElimStorePlain]: Eliminatee v_prenex_109 vanished before elimination [2021-04-15 03:02:39,223 INFO L518 ElimStorePlain]: Eliminatee v_prenex_81 vanished before elimination [2021-04-15 03:02:39,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:39,231 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:39,378 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-04-15 03:02:39,378 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:39,378 INFO L518 ElimStorePlain]: Eliminatee v_prenex_85 vanished before elimination [2021-04-15 03:02:39,378 INFO L518 ElimStorePlain]: Eliminatee v_prenex_114 vanished before elimination [2021-04-15 03:02:39,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:02:39,385 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:39,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:02:39,392 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:39,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:02:39,400 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:39,546 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-04-15 03:02:39,547 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:39,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:02:39,554 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:39,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:02:39,561 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:39,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:02:39,568 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:39,704 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-04-15 03:02:39,705 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:39,722 INFO L550 ElimStorePlain]: Start of recursive call 1: 24 dim-0 vars, 30 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-04-15 03:02:39,722 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 54 variables, input treesize:1381, output treesize:220 [2021-04-15 03:02:39,928 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-04-15 03:02:40,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:02:40,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:02:40,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:02:40,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099612569] [2021-04-15 03:02:40,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:02:40,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:02:40,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:02:40,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:02:40,128 INFO L87 Difference]: Start difference. First operand 678 states and 2304 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:02:40,578 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 55 [2021-04-15 03:02:40,979 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 127 [2021-04-15 03:02:41,658 WARN L205 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 139 [2021-04-15 03:02:42,300 WARN L205 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 138 [2021-04-15 03:02:42,970 WARN L205 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 147 [2021-04-15 03:02:42,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:02:42,980 INFO L93 Difference]: Finished difference Result 922 states and 3014 transitions. [2021-04-15 03:02:42,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-04-15 03:02:42,981 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:02:42,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:02:42,983 INFO L225 Difference]: With dead ends: 922 [2021-04-15 03:02:42,983 INFO L226 Difference]: Without dead ends: 907 [2021-04-15 03:02:42,983 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 3926.8ms TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-04-15 03:02:42,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2021-04-15 03:02:42,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 693. [2021-04-15 03:02:42,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 692 states have (on average 3.407514450867052) internal successors, (2358), 692 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:02:42,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 2358 transitions. [2021-04-15 03:02:42,997 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 2358 transitions. Word has length 20 [2021-04-15 03:02:42,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:02:42,997 INFO L480 AbstractCegarLoop]: Abstraction has 693 states and 2358 transitions. [2021-04-15 03:02:42,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:02:42,997 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 2358 transitions. [2021-04-15 03:02:42,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:02:42,998 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:02:42,998 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:02:43,199 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2095,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:02:43,199 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:02:43,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:02:43,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1542827176, now seen corresponding path program 32 times [2021-04-15 03:02:43,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:02:43,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243004279] [2021-04-15 03:02:43,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:02:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:02:43,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:02:43,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243004279] [2021-04-15 03:02:43,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493655160] [2021-04-15 03:02:43,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:02:43,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:02:43,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:02:43,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:02:43,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:02:43,743 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-15 03:02:44,135 INFO L446 ElimStorePlain]: Different costs {10=[v_prenex_119], 21=[ends_with_2]} [2021-04-15 03:02:44,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:44,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:44,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:02:44,146 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:44,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:44,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:44,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:02:44,159 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:44,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:44,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:44,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:02:44,169 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:44,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:44,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:02:44,177 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:44,708 WARN L205 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 99 [2021-04-15 03:02:44,709 INFO L628 ElimStorePlain]: treesize reduction 448, result has 49.5 percent of original size [2021-04-15 03:02:44,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:02:44,716 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:44,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:02:44,725 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:44,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:44,734 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:44,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:44,742 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:44,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:02:44,750 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:44,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:02:44,758 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:44,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:44,763 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:44,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:02:44,774 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:44,960 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-04-15 03:02:44,960 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:44,972 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-1 vars, End of recursive call: 9 dim-0 vars, and 10 xjuncts. [2021-04-15 03:02:44,972 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 7 variables, input treesize:995, output treesize:401 [2021-04-15 03:02:45,342 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 125 [2021-04-15 03:02:45,658 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 85 [2021-04-15 03:02:45,859 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-04-15 03:02:46,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:46,759 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:46,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:02:46,761 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:46,768 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:02:46,770 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:46,777 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:02:46,778 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:46,785 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:02:46,786 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:46,793 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:02:46,794 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:46,993 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2021-04-15 03:02:46,994 INFO L628 ElimStorePlain]: treesize reduction 526, result has 21.1 percent of original size [2021-04-15 03:02:46,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:47,000 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:47,065 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:47,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:47,073 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:47,134 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:47,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:02:47,139 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:47,197 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:47,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:02:47,203 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:47,259 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:47,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:02:47,265 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:47,313 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:47,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:02:47,317 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:47,365 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:47,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:47,369 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:47,421 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:47,423 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 8 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-04-15 03:02:47,423 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 10 variables, input treesize:852, output treesize:99 [2021-04-15 03:02:47,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:02:47,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:02:47,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:02:47,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587772740] [2021-04-15 03:02:47,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:02:47,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:02:47,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:02:47,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:02:47,577 INFO L87 Difference]: Start difference. First operand 693 states and 2358 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:02:48,029 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2021-04-15 03:02:48,383 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 101 [2021-04-15 03:02:48,830 WARN L205 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 137 [2021-04-15 03:02:49,326 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 110 [2021-04-15 03:02:49,796 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 112 [2021-04-15 03:02:50,393 WARN L205 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 139 [2021-04-15 03:02:51,020 WARN L205 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 85 [2021-04-15 03:02:51,662 WARN L205 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 113 [2021-04-15 03:02:51,813 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2021-04-15 03:02:52,034 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2021-04-15 03:02:52,487 WARN L205 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 115 [2021-04-15 03:02:52,953 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 115 [2021-04-15 03:02:53,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:02:53,057 INFO L93 Difference]: Finished difference Result 1164 states and 3710 transitions. [2021-04-15 03:02:53,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-04-15 03:02:53,057 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:02:53,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:02:53,059 INFO L225 Difference]: With dead ends: 1164 [2021-04-15 03:02:53,060 INFO L226 Difference]: Without dead ends: 1119 [2021-04-15 03:02:53,060 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 6289.1ms TimeCoverageRelationStatistics Valid=239, Invalid=1093, Unknown=0, NotChecked=0, Total=1332 [2021-04-15 03:02:53,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2021-04-15 03:02:53,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 690. [2021-04-15 03:02:53,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 689 states have (on average 3.404934687953556) internal successors, (2346), 689 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:02:53,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 2346 transitions. [2021-04-15 03:02:53,076 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 2346 transitions. Word has length 20 [2021-04-15 03:02:53,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:02:53,076 INFO L480 AbstractCegarLoop]: Abstraction has 690 states and 2346 transitions. [2021-04-15 03:02:53,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:02:53,076 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 2346 transitions. [2021-04-15 03:02:53,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:02:53,078 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:02:53,078 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:02:53,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2394,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:02:53,279 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:02:53,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:02:53,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1461428120, now seen corresponding path program 33 times [2021-04-15 03:02:53,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:02:53,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694336147] [2021-04-15 03:02:53,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:02:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:02:53,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:02:53,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694336147] [2021-04-15 03:02:53,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788940971] [2021-04-15 03:02:53,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:02:53,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-04-15 03:02:53,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:02:53,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:02:53,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:02:54,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:54,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:54,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:02:54,403 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:54,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:54,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:54,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2021-04-15 03:02:54,414 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:54,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:54,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:54,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:02:54,424 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:54,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:54,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2021-04-15 03:02:54,433 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:54,873 WARN L205 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 97 [2021-04-15 03:02:54,873 INFO L628 ElimStorePlain]: treesize reduction 326, result has 51.4 percent of original size [2021-04-15 03:02:54,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:54,880 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:54,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:54,888 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:55,078 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-04-15 03:02:55,078 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:55,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:55,086 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:55,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:02:55,093 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:55,262 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-04-15 03:02:55,263 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:55,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:02:55,269 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:55,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:02:55,274 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:55,423 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-04-15 03:02:55,424 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:55,435 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-1 vars, End of recursive call: 8 dim-0 vars, and 8 xjuncts. [2021-04-15 03:02:55,435 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 7 variables, input treesize:789, output treesize:321 [2021-04-15 03:02:55,634 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-04-15 03:02:56,052 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 85 [2021-04-15 03:02:56,693 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:02:56,694 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:56,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:56,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:56,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:02:56,705 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:56,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:56,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:02:56,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:02:56,716 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:56,724 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:02:56,725 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:56,921 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2021-04-15 03:02:56,922 INFO L628 ElimStorePlain]: treesize reduction 413, result has 26.4 percent of original size [2021-04-15 03:02:56,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:56,934 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:56,998 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:57,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:02:57,004 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:57,066 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:57,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:02:57,082 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:57,148 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:57,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:02:57,154 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:57,212 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:57,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:02:57,218 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:57,274 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:57,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:02:57,280 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:57,335 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:57,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:02:57,340 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:02:57,393 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:02:57,396 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 8 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-04-15 03:02:57,396 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 10 variables, input treesize:690, output treesize:99 [2021-04-15 03:02:57,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:02:57,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:02:57,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:02:57,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181142907] [2021-04-15 03:02:57,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:02:57,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:02:57,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:02:57,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:02:57,565 INFO L87 Difference]: Start difference. First operand 690 states and 2346 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:02:58,366 WARN L205 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 113 [2021-04-15 03:02:58,764 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 132 [2021-04-15 03:02:58,966 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2021-04-15 03:02:59,360 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 79 [2021-04-15 03:03:00,003 WARN L205 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 119 [2021-04-15 03:03:00,681 WARN L205 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 130 [2021-04-15 03:03:01,164 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 148 [2021-04-15 03:03:01,558 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 139 [2021-04-15 03:03:02,028 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 95 [2021-04-15 03:03:02,407 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 86 [2021-04-15 03:03:03,299 WARN L205 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 135 [2021-04-15 03:03:03,450 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2021-04-15 03:03:04,054 WARN L205 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 125 [2021-04-15 03:03:04,838 WARN L205 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 147 [2021-04-15 03:03:05,310 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 91 [2021-04-15 03:03:06,030 WARN L205 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 132 [2021-04-15 03:03:06,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:03:06,163 INFO L93 Difference]: Finished difference Result 1206 states and 3822 transitions. [2021-04-15 03:03:06,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-04-15 03:03:06,163 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:03:06,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:03:06,166 INFO L225 Difference]: With dead ends: 1206 [2021-04-15 03:03:06,166 INFO L226 Difference]: Without dead ends: 1161 [2021-04-15 03:03:06,166 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 8966.3ms TimeCoverageRelationStatistics Valid=367, Invalid=1439, Unknown=0, NotChecked=0, Total=1806 [2021-04-15 03:03:06,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2021-04-15 03:03:06,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 684. [2021-04-15 03:03:06,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 3.3997071742313323) internal successors, (2322), 683 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:03:06,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 2322 transitions. [2021-04-15 03:03:06,184 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 2322 transitions. Word has length 20 [2021-04-15 03:03:06,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:03:06,185 INFO L480 AbstractCegarLoop]: Abstraction has 684 states and 2322 transitions. [2021-04-15 03:03:06,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:03:06,185 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 2322 transitions. [2021-04-15 03:03:06,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:03:06,186 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:03:06,186 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:03:06,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2679 [2021-04-15 03:03:06,387 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:03:06,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:03:06,387 INFO L82 PathProgramCache]: Analyzing trace with hash -2103334614, now seen corresponding path program 34 times [2021-04-15 03:03:06,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:03:06,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914241264] [2021-04-15 03:03:06,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:03:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:03:06,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:03:06,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914241264] [2021-04-15 03:03:06,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117680184] [2021-04-15 03:03:06,679 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:03:06,719 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 03:03:06,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:03:06,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:03:06,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:03:07,308 INFO L446 ElimStorePlain]: Different costs {6=[ends_with_2, v_prenex_153], 10=[v_prenex_155]} [2021-04-15 03:03:07,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:07,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:07,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:03:07,318 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:07,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:07,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:07,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2021-04-15 03:03:07,328 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:07,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:07,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2021-04-15 03:03:07,336 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:07,623 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2021-04-15 03:03:07,624 INFO L628 ElimStorePlain]: treesize reduction 256, result has 50.1 percent of original size [2021-04-15 03:03:07,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:07,630 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:07,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:03:07,637 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:07,771 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-04-15 03:03:07,771 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:07,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:07,778 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:07,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:07,785 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:07,914 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-04-15 03:03:07,914 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:07,921 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 3 dim-1 vars, End of recursive call: 5 dim-0 vars, and 6 xjuncts. [2021-04-15 03:03:07,921 INFO L247 ElimStorePlain]: Needed 8 recursive calls to eliminate 7 variables, input treesize:585, output treesize:239 [2021-04-15 03:03:08,083 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-04-15 03:03:09,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:09,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:09,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:03:09,124 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:09,135 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:03:09,136 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:09,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:09,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:09,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:03:09,152 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:09,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:09,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:09,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:03:09,168 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:09,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:09,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:03:09,185 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:09,661 WARN L205 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 97 [2021-04-15 03:03:09,661 INFO L628 ElimStorePlain]: treesize reduction 987, result has 19.1 percent of original size [2021-04-15 03:03:09,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:09,669 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:09,794 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-04-15 03:03:09,795 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:09,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:09,803 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:09,927 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-04-15 03:03:09,927 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:09,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:09,933 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:10,041 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-15 03:03:10,041 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:10,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:10,047 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:10,168 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-04-15 03:03:10,168 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:10,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:03:10,181 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:10,305 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-04-15 03:03:10,306 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:10,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:10,315 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:10,459 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-04-15 03:03:10,459 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:10,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:10,467 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:10,586 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-04-15 03:03:10,587 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:10,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:03:10,594 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:10,707 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-04-15 03:03:10,708 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:10,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:10,716 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:10,831 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-15 03:03:10,831 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:10,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:10,838 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:10,965 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-04-15 03:03:10,965 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:10,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:10,974 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:11,096 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-04-15 03:03:11,097 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:11,110 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 12 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-04-15 03:03:11,111 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 17 variables, input treesize:1413, output treesize:156 [2021-04-15 03:03:11,313 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-15 03:03:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:03:11,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:03:11,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:03:11,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222881847] [2021-04-15 03:03:11,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:03:11,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:03:11,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:03:11,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:03:11,547 INFO L87 Difference]: Start difference. First operand 684 states and 2322 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:03:11,975 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-04-15 03:03:12,231 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-04-15 03:03:12,427 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2021-04-15 03:03:12,659 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2021-04-15 03:03:12,880 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-04-15 03:03:13,185 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2021-04-15 03:03:13,389 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 59 [2021-04-15 03:03:13,621 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-04-15 03:03:14,166 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2021-04-15 03:03:14,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:03:14,231 INFO L93 Difference]: Finished difference Result 968 states and 3114 transitions. [2021-04-15 03:03:14,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-04-15 03:03:14,232 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:03:14,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:03:14,234 INFO L225 Difference]: With dead ends: 968 [2021-04-15 03:03:14,234 INFO L226 Difference]: Without dead ends: 923 [2021-04-15 03:03:14,234 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 3150.1ms TimeCoverageRelationStatistics Valid=273, Invalid=917, Unknown=0, NotChecked=0, Total=1190 [2021-04-15 03:03:14,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-04-15 03:03:14,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 691. [2021-04-15 03:03:14,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 690 states have (on average 3.3956521739130436) internal successors, (2343), 690 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:03:14,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 2343 transitions. [2021-04-15 03:03:14,246 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 2343 transitions. Word has length 20 [2021-04-15 03:03:14,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:03:14,246 INFO L480 AbstractCegarLoop]: Abstraction has 691 states and 2343 transitions. [2021-04-15 03:03:14,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:03:14,247 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 2343 transitions. [2021-04-15 03:03:14,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:03:14,248 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:03:14,248 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:03:14,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2952 [2021-04-15 03:03:14,449 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:03:14,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:03:14,449 INFO L82 PathProgramCache]: Analyzing trace with hash -927843970, now seen corresponding path program 35 times [2021-04-15 03:03:14,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:03:14,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679513996] [2021-04-15 03:03:14,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:03:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:03:14,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:03:14,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679513996] [2021-04-15 03:03:14,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064861626] [2021-04-15 03:03:14,829 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:03:14,866 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:03:14,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:03:14,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:03:14,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:03:15,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:03:15,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:03:15,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-04-15 03:03:15,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880403119] [2021-04-15 03:03:15,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-15 03:03:15,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:03:15,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-15 03:03:15,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-04-15 03:03:15,463 INFO L87 Difference]: Start difference. First operand 691 states and 2343 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:03:15,895 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 38 [2021-04-15 03:03:16,137 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2021-04-15 03:03:16,332 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2021-04-15 03:03:16,493 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-04-15 03:03:16,697 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2021-04-15 03:03:16,937 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2021-04-15 03:03:16,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:03:16,989 INFO L93 Difference]: Finished difference Result 885 states and 2857 transitions. [2021-04-15 03:03:16,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-04-15 03:03:16,990 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:03:16,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:03:16,991 INFO L225 Difference]: With dead ends: 885 [2021-04-15 03:03:16,991 INFO L226 Difference]: Without dead ends: 825 [2021-04-15 03:03:16,991 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1879.1ms TimeCoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2021-04-15 03:03:16,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2021-04-15 03:03:17,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 702. [2021-04-15 03:03:17,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 3.3937232524964336) internal successors, (2379), 701 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:03:17,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 2379 transitions. [2021-04-15 03:03:17,004 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 2379 transitions. Word has length 20 [2021-04-15 03:03:17,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:03:17,005 INFO L480 AbstractCegarLoop]: Abstraction has 702 states and 2379 transitions. [2021-04-15 03:03:17,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:03:17,005 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 2379 transitions. [2021-04-15 03:03:17,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:03:17,006 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:03:17,006 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:03:17,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3305,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:03:17,206 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:03:17,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:03:17,207 INFO L82 PathProgramCache]: Analyzing trace with hash 725260138, now seen corresponding path program 36 times [2021-04-15 03:03:17,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:03:17,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123115428] [2021-04-15 03:03:17,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:03:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:03:17,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:03:17,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123115428] [2021-04-15 03:03:17,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864184707] [2021-04-15 03:03:17,592 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:03:17,634 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-04-15 03:03:17,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:03:17,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:03:17,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:03:18,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:18,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:18,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:03:18,482 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:18,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:18,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:18,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2021-04-15 03:03:18,490 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:18,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:18,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:18,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:03:18,499 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:18,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:18,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2021-04-15 03:03:18,508 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:19,075 WARN L205 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 99 [2021-04-15 03:03:19,076 INFO L628 ElimStorePlain]: treesize reduction 352, result has 52.5 percent of original size [2021-04-15 03:03:19,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:19,084 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:19,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:19,094 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:19,323 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-04-15 03:03:19,323 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:19,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:19,332 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:19,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:19,340 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:19,586 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-04-15 03:03:19,586 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:19,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:19,593 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:19,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:19,600 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:19,840 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-04-15 03:03:19,840 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:19,852 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-1 vars, End of recursive call: 8 dim-0 vars, and 8 xjuncts. [2021-04-15 03:03:19,852 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 7 variables, input treesize:869, output treesize:361 [2021-04-15 03:03:20,119 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-04-15 03:03:20,619 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 89 [2021-04-15 03:03:21,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:21,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:21,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:03:21,856 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:21,867 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:03:21,868 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:21,880 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:03:21,881 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:21,896 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:03:21,897 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:22,336 WARN L205 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 95 [2021-04-15 03:03:22,337 INFO L628 ElimStorePlain]: treesize reduction 1025, result has 18.2 percent of original size [2021-04-15 03:03:22,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:22,346 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:22,470 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-04-15 03:03:22,470 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:22,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:22,478 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:22,604 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-04-15 03:03:22,604 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:22,604 INFO L518 ElimStorePlain]: Eliminatee v_prenex_188 vanished before elimination [2021-04-15 03:03:22,604 INFO L518 ElimStorePlain]: Eliminatee v_prenex_198 vanished before elimination [2021-04-15 03:03:22,605 INFO L518 ElimStorePlain]: Eliminatee v_prenex_187 vanished before elimination [2021-04-15 03:03:22,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:22,612 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:22,732 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-04-15 03:03:22,732 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:22,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:22,740 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:22,867 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-04-15 03:03:22,868 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:22,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:22,875 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:22,991 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-04-15 03:03:22,991 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:22,992 INFO L518 ElimStorePlain]: Eliminatee v_prenex_203 vanished before elimination [2021-04-15 03:03:22,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:22,998 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:23,113 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-04-15 03:03:23,113 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:23,114 INFO L518 ElimStorePlain]: Eliminatee v_prenex_204 vanished before elimination [2021-04-15 03:03:23,114 INFO L518 ElimStorePlain]: Eliminatee v_prenex_191 vanished before elimination [2021-04-15 03:03:23,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:23,122 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:23,235 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-04-15 03:03:23,236 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:23,236 INFO L518 ElimStorePlain]: Eliminatee v_prenex_193 vanished before elimination [2021-04-15 03:03:23,236 INFO L518 ElimStorePlain]: Eliminatee v_prenex_192 vanished before elimination [2021-04-15 03:03:23,236 INFO L518 ElimStorePlain]: Eliminatee v_prenex_184 vanished before elimination [2021-04-15 03:03:23,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:03:23,243 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:23,351 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-04-15 03:03:23,352 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:23,352 INFO L518 ElimStorePlain]: Eliminatee v_prenex_183 vanished before elimination [2021-04-15 03:03:23,352 INFO L518 ElimStorePlain]: Eliminatee v_prenex_194 vanished before elimination [2021-04-15 03:03:23,352 INFO L518 ElimStorePlain]: Eliminatee v_prenex_197 vanished before elimination [2021-04-15 03:03:23,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:23,359 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:23,466 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-15 03:03:23,466 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:23,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:23,473 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:23,578 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-04-15 03:03:23,579 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:23,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:23,585 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:23,685 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:23,688 INFO L550 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 24 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-04-15 03:03:23,688 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 34 variables, input treesize:1413, output treesize:156 [2021-04-15 03:03:23,842 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-15 03:03:24,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:03:24,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:03:24,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:03:24,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808607954] [2021-04-15 03:03:24,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:03:24,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:03:24,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:03:24,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:03:24,047 INFO L87 Difference]: Start difference. First operand 702 states and 2379 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:03:25,347 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2021-04-15 03:03:25,887 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 105 [2021-04-15 03:03:26,555 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2021-04-15 03:03:26,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:03:26,674 INFO L93 Difference]: Finished difference Result 1062 states and 3378 transitions. [2021-04-15 03:03:26,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-04-15 03:03:26,675 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:03:26,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:03:26,677 INFO L225 Difference]: With dead ends: 1062 [2021-04-15 03:03:26,677 INFO L226 Difference]: Without dead ends: 1017 [2021-04-15 03:03:26,677 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 3123.3ms TimeCoverageRelationStatistics Valid=246, Invalid=1014, Unknown=0, NotChecked=0, Total=1260 [2021-04-15 03:03:26,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2021-04-15 03:03:26,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 706. [2021-04-15 03:03:26,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 705 states have (on average 3.3943262411347517) internal successors, (2393), 705 states have internal predecessors, (2393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:03:26,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2393 transitions. [2021-04-15 03:03:26,694 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2393 transitions. Word has length 20 [2021-04-15 03:03:26,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:03:26,694 INFO L480 AbstractCegarLoop]: Abstraction has 706 states and 2393 transitions. [2021-04-15 03:03:26,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:03:26,694 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2393 transitions. [2021-04-15 03:03:26,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:03:26,696 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:03:26,696 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:03:26,921 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3328,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:03:26,921 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:03:26,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:03:26,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1910342118, now seen corresponding path program 37 times [2021-04-15 03:03:26,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:03:26,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140850028] [2021-04-15 03:03:26,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:03:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:03:27,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:03:27,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140850028] [2021-04-15 03:03:27,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23650864] [2021-04-15 03:03:27,276 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:03:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:03:27,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 37 conjunts are in the unsatisfiable core [2021-04-15 03:03:27,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:03:27,474 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-04-15 03:03:28,042 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_211], 1=[v_prenex_212, v_prenex_213], 6=[ends_with_2, v_prenex_214, v_prenex_215]} [2021-04-15 03:03:28,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:28,056 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:28,852 WARN L205 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 114 [2021-04-15 03:03:28,853 INFO L628 ElimStorePlain]: treesize reduction 453, result has 57.5 percent of original size [2021-04-15 03:03:28,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:28,862 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:28,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:28,870 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:28,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:28,881 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:29,220 WARN L205 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-04-15 03:03:29,220 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:29,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:03:29,228 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:29,544 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-04-15 03:03:29,544 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:29,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:29,550 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:29,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:29,556 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:29,878 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-04-15 03:03:29,878 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:29,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:29,886 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:29,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:29,896 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:29,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:29,905 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:30,328 WARN L205 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-04-15 03:03:30,328 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:30,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:30,337 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:30,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:30,345 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:30,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:30,353 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:30,679 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-04-15 03:03:30,679 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:30,693 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 6 dim-1 vars, End of recursive call: 10 dim-0 vars, and 13 xjuncts. [2021-04-15 03:03:30,693 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 9 variables, input treesize:1068, output treesize:557 [2021-04-15 03:03:31,162 WARN L205 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 125 [2021-04-15 03:03:33,729 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_239, v_prenex_265, v_prenex_243, v_prenex_242, v_prenex_267, v_prenex_245, v_prenex_244, v_prenex_225, v_prenex_246, v_prenex_224, v_prenex_268, v_prenex_249, v_prenex_248, v_prenex_226, v_prenex_261, v_prenex_241, v_prenex_262, v_prenex_229, v_prenex_228, v_prenex_276, v_prenex_231, v_prenex_234, v_prenex_235, v_prenex_237, v_prenex_270, v_prenex_272, v_prenex_274, v_prenex_230], 15=[ends_with_10, v_prenex_252], 21=[v_prenex_255, ends_with_6]} [2021-04-15 03:03:33,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:33,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:03:33,768 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:34,522 WARN L205 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 423 DAG size of output: 143 [2021-04-15 03:03:34,522 INFO L628 ElimStorePlain]: treesize reduction 1233, result has 26.6 percent of original size [2021-04-15 03:03:34,523 INFO L518 ElimStorePlain]: Eliminatee v_prenex_265 vanished before elimination [2021-04-15 03:03:34,523 INFO L518 ElimStorePlain]: Eliminatee v_prenex_243 vanished before elimination [2021-04-15 03:03:34,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:34,531 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:34,768 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2021-04-15 03:03:34,768 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:34,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:34,779 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:35,030 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2021-04-15 03:03:35,031 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:35,031 INFO L518 ElimStorePlain]: Eliminatee v_prenex_245 vanished before elimination [2021-04-15 03:03:35,031 INFO L518 ElimStorePlain]: Eliminatee v_prenex_244 vanished before elimination [2021-04-15 03:03:35,031 INFO L518 ElimStorePlain]: Eliminatee v_prenex_225 vanished before elimination [2021-04-15 03:03:35,031 INFO L518 ElimStorePlain]: Eliminatee v_prenex_246 vanished before elimination [2021-04-15 03:03:35,031 INFO L518 ElimStorePlain]: Eliminatee v_prenex_224 vanished before elimination [2021-04-15 03:03:35,031 INFO L518 ElimStorePlain]: Eliminatee v_prenex_268 vanished before elimination [2021-04-15 03:03:35,031 INFO L518 ElimStorePlain]: Eliminatee v_prenex_249 vanished before elimination [2021-04-15 03:03:35,031 INFO L518 ElimStorePlain]: Eliminatee v_prenex_248 vanished before elimination [2021-04-15 03:03:35,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:03:35,041 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:35,289 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-04-15 03:03:35,289 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:35,289 INFO L518 ElimStorePlain]: Eliminatee v_prenex_261 vanished before elimination [2021-04-15 03:03:35,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:35,302 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:35,569 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2021-04-15 03:03:35,570 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:35,570 INFO L518 ElimStorePlain]: Eliminatee v_prenex_262 vanished before elimination [2021-04-15 03:03:35,570 INFO L518 ElimStorePlain]: Eliminatee v_prenex_229 vanished before elimination [2021-04-15 03:03:35,570 INFO L518 ElimStorePlain]: Eliminatee v_prenex_228 vanished before elimination [2021-04-15 03:03:35,570 INFO L518 ElimStorePlain]: Eliminatee v_prenex_276 vanished before elimination [2021-04-15 03:03:35,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:35,578 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:35,823 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-04-15 03:03:35,824 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:35,824 INFO L518 ElimStorePlain]: Eliminatee v_prenex_234 vanished before elimination [2021-04-15 03:03:35,824 INFO L518 ElimStorePlain]: Eliminatee v_prenex_235 vanished before elimination [2021-04-15 03:03:35,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:35,834 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:36,086 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-04-15 03:03:36,086 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:36,086 INFO L518 ElimStorePlain]: Eliminatee v_prenex_270 vanished before elimination [2021-04-15 03:03:36,086 INFO L518 ElimStorePlain]: Eliminatee v_prenex_272 vanished before elimination [2021-04-15 03:03:36,086 INFO L518 ElimStorePlain]: Eliminatee v_prenex_274 vanished before elimination [2021-04-15 03:03:36,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:36,095 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:36,338 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-04-15 03:03:36,339 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:36,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:03:36,348 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:36,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:03:36,358 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:36,595 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-04-15 03:03:36,595 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:36,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:36,605 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:36,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:36,623 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:36,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:36,632 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:36,862 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-04-15 03:03:36,862 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:36,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:03:36,884 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:36,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:03:36,896 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:36,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:03:36,906 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:37,123 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-04-15 03:03:37,124 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:37,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:37,135 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:37,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:37,146 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:37,324 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-04-15 03:03:37,324 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:37,329 INFO L550 ElimStorePlain]: Start of recursive call 1: 32 dim-0 vars, 32 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-04-15 03:03:37,329 INFO L247 ElimStorePlain]: Needed 19 recursive calls to eliminate 64 variables, input treesize:1687, output treesize:290 [2021-04-15 03:03:37,589 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-04-15 03:03:37,816 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2021-04-15 03:03:38,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:03:38,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:03:38,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:03:38,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391660648] [2021-04-15 03:03:38,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:03:38,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:03:38,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:03:38,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:03:38,057 INFO L87 Difference]: Start difference. First operand 706 states and 2393 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:03:38,803 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 52 [2021-04-15 03:03:39,031 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 55 [2021-04-15 03:03:39,203 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2021-04-15 03:03:39,654 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 41 [2021-04-15 03:03:39,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:03:39,696 INFO L93 Difference]: Finished difference Result 962 states and 3114 transitions. [2021-04-15 03:03:39,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-04-15 03:03:39,697 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:03:39,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:03:39,699 INFO L225 Difference]: With dead ends: 962 [2021-04-15 03:03:39,699 INFO L226 Difference]: Without dead ends: 947 [2021-04-15 03:03:39,699 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2765.1ms TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2021-04-15 03:03:39,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2021-04-15 03:03:39,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 707. [2021-04-15 03:03:39,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 706 states have (on average 3.396600566572238) internal successors, (2398), 706 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:03:39,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 2398 transitions. [2021-04-15 03:03:39,711 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 2398 transitions. Word has length 20 [2021-04-15 03:03:39,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:03:39,711 INFO L480 AbstractCegarLoop]: Abstraction has 707 states and 2398 transitions. [2021-04-15 03:03:39,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:03:39,711 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 2398 transitions. [2021-04-15 03:03:39,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:03:39,713 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:03:39,713 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:03:39,916 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3750,42 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:03:39,917 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:03:39,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:03:39,917 INFO L82 PathProgramCache]: Analyzing trace with hash 969993726, now seen corresponding path program 38 times [2021-04-15 03:03:39,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:03:39,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981293996] [2021-04-15 03:03:39,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:03:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:03:40,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:03:40,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981293996] [2021-04-15 03:03:40,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768540896] [2021-04-15 03:03:40,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:03:40,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:03:40,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:03:40,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:03:40,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:03:40,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:03:40,596 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:40,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:03:40,605 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:40,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:03:40,615 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:40,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:03:40,624 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:40,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:03:40,633 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:40,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:03:40,642 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:40,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:03:40,651 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:40,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:03:40,660 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:40,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:03:40,668 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:40,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:03:40,678 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:40,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:03:40,686 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:40,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:03:40,694 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:40,699 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:03:40,700 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:40,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,707 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:03:40,709 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:40,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:03:40,717 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:40,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:03:40,726 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:40,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:03:40,734 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:40,742 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:03:40,743 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:40,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:03:40,755 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:40,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:03:40,766 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:40,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,773 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:03:40,774 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:40,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:03:40,783 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:40,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:03:40,792 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:40,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:03:40,801 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:40,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:40,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:03:40,809 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:41,209 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-04-15 03:03:41,210 INFO L628 ElimStorePlain]: treesize reduction 37, result has 90.4 percent of original size [2021-04-15 03:03:41,214 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 10 xjuncts. [2021-04-15 03:03:41,215 INFO L247 ElimStorePlain]: Needed 26 recursive calls to eliminate 2 variables, input treesize:1096, output treesize:350 [2021-04-15 03:03:41,614 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2021-04-15 03:03:41,801 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-04-15 03:03:42,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:42,489 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:42,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:42,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:03:42,497 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:42,671 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2021-04-15 03:03:42,671 INFO L628 ElimStorePlain]: treesize reduction 125, result has 52.5 percent of original size [2021-04-15 03:03:42,672 INFO L518 ElimStorePlain]: Eliminatee v_prenex_281 vanished before elimination [2021-04-15 03:03:42,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:42,677 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:42,755 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:42,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:42,760 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:42,835 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:42,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:03:42,841 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:42,912 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:42,912 INFO L518 ElimStorePlain]: Eliminatee v_prenex_284 vanished before elimination [2021-04-15 03:03:42,914 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-04-15 03:03:42,914 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 6 variables, input treesize:279, output treesize:126 [2021-04-15 03:03:43,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:03:43,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:03:43,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:03:43,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954175265] [2021-04-15 03:03:43,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:03:43,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:03:43,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:03:43,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:03:43,219 INFO L87 Difference]: Start difference. First operand 707 states and 2398 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:03:44,127 WARN L205 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 53 [2021-04-15 03:03:44,494 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2021-04-15 03:03:44,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:03:44,554 INFO L93 Difference]: Finished difference Result 864 states and 2797 transitions. [2021-04-15 03:03:44,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-15 03:03:44,554 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:03:44,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:03:44,556 INFO L225 Difference]: With dead ends: 864 [2021-04-15 03:03:44,556 INFO L226 Difference]: Without dead ends: 819 [2021-04-15 03:03:44,557 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 2053.0ms TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2021-04-15 03:03:44,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2021-04-15 03:03:44,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 709. [2021-04-15 03:03:44,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 708 states have (on average 3.402542372881356) internal successors, (2409), 708 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:03:44,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 2409 transitions. [2021-04-15 03:03:44,569 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 2409 transitions. Word has length 20 [2021-04-15 03:03:44,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:03:44,569 INFO L480 AbstractCegarLoop]: Abstraction has 709 states and 2409 transitions. [2021-04-15 03:03:44,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:03:44,570 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 2409 transitions. [2021-04-15 03:03:44,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:03:44,571 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:03:44,571 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:03:44,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3998,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:03:44,772 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:03:44,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:03:44,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1980452154, now seen corresponding path program 39 times [2021-04-15 03:03:44,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:03:44,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392428435] [2021-04-15 03:03:44,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:03:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:03:45,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:03:45,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392428435] [2021-04-15 03:03:45,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491621010] [2021-04-15 03:03:45,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:03:45,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-04-15 03:03:45,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:03:45,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:03:45,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:03:45,390 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-15 03:03:45,987 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:03:45,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:03:45,989 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:46,525 WARN L205 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 81 [2021-04-15 03:03:46,526 INFO L628 ElimStorePlain]: treesize reduction 285, result has 58.6 percent of original size [2021-04-15 03:03:46,526 INFO L518 ElimStorePlain]: Eliminatee v_prenex_286 vanished before elimination [2021-04-15 03:03:46,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:46,533 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:46,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:46,540 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:46,772 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-04-15 03:03:46,772 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:46,772 INFO L518 ElimStorePlain]: Eliminatee ends_with_10 vanished before elimination [2021-04-15 03:03:46,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:46,779 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:47,015 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-04-15 03:03:47,015 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:47,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:47,022 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:47,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:47,030 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:47,255 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-04-15 03:03:47,255 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:47,261 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 6 dim-1 vars, End of recursive call: 4 dim-0 vars, and 10 xjuncts. [2021-04-15 03:03:47,261 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 10 variables, input treesize:695, output treesize:381 [2021-04-15 03:03:47,682 WARN L205 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2021-04-15 03:03:49,668 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_294, v_prenex_296], 1=[v_prenex_297, v_prenex_300, v_prenex_304, v_prenex_295], 6=[ends_with_2, ends_with_6, v_prenex_306, v_prenex_305, v_prenex_308, v_prenex_307, v_prenex_309, v_prenex_298, v_prenex_311, v_prenex_310, v_prenex_299, v_prenex_302, v_prenex_301, v_prenex_303]} [2021-04-15 03:03:49,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:49,704 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:50,925 WARN L205 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 284 DAG size of output: 155 [2021-04-15 03:03:50,926 INFO L628 ElimStorePlain]: treesize reduction 1640, result has 26.0 percent of original size [2021-04-15 03:03:50,926 INFO L518 ElimStorePlain]: Eliminatee v_prenex_296 vanished before elimination [2021-04-15 03:03:50,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:03:50,935 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:51,279 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2021-04-15 03:03:51,280 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:51,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:51,289 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:51,590 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2021-04-15 03:03:51,591 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:51,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:51,599 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:51,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:51,606 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:51,948 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2021-04-15 03:03:51,948 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:51,948 INFO L518 ElimStorePlain]: Eliminatee v_prenex_295 vanished before elimination [2021-04-15 03:03:51,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:51,956 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:51,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:51,965 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:52,313 WARN L205 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2021-04-15 03:03:52,314 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:52,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:52,324 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:52,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:52,337 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:52,678 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-04-15 03:03:52,678 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:52,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:52,687 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:53,024 WARN L205 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2021-04-15 03:03:53,025 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:53,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:53,035 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:53,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:53,045 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:53,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:53,055 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:53,381 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-04-15 03:03:53,382 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:53,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:53,394 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:53,713 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-04-15 03:03:53,714 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:53,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:53,729 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:54,051 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-04-15 03:03:54,052 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:54,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:03:54,062 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:54,373 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-04-15 03:03:54,373 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:54,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:54,383 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:54,645 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-04-15 03:03:54,645 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:54,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:54,653 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:54,963 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-04-15 03:03:54,963 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:54,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:54,972 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:55,283 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-04-15 03:03:55,284 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:55,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:55,292 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:55,588 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-04-15 03:03:55,588 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:55,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:03:55,597 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:55,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:55,606 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:55,906 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-04-15 03:03:55,906 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:55,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:55,914 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:55,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:03:55,922 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:56,209 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-04-15 03:03:56,209 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:56,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:56,217 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:56,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:03:56,226 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-04-15 03:03:56,499 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-04-15 03:03:56,499 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:03:56,507 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 20 dim-1 vars, End of recursive call: and 13 xjuncts. [2021-04-15 03:03:56,508 INFO L247 ElimStorePlain]: Needed 27 recursive calls to eliminate 25 variables, input treesize:2219, output treesize:393 [2021-04-15 03:03:56,836 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2021-04-15 03:03:57,011 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-04-15 03:03:57,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:03:57,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:03:57,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:03:57,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800562921] [2021-04-15 03:03:57,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:03:57,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:03:57,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:03:57,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:03:57,230 INFO L87 Difference]: Start difference. First operand 709 states and 2409 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:03:57,994 WARN L205 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 102 [2021-04-15 03:03:58,278 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2021-04-15 03:03:58,641 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2021-04-15 03:03:58,982 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-04-15 03:03:59,314 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 43 [2021-04-15 03:03:59,771 WARN L205 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2021-04-15 03:03:59,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:03:59,807 INFO L93 Difference]: Finished difference Result 923 states and 2967 transitions. [2021-04-15 03:03:59,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-15 03:03:59,808 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:03:59,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:03:59,809 INFO L225 Difference]: With dead ends: 923 [2021-04-15 03:03:59,809 INFO L226 Difference]: Without dead ends: 863 [2021-04-15 03:03:59,810 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 3782.5ms TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2021-04-15 03:03:59,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2021-04-15 03:03:59,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 714. [2021-04-15 03:03:59,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 713 states have (on average 3.41234221598878) internal successors, (2433), 713 states have internal predecessors, (2433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:03:59,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 2433 transitions. [2021-04-15 03:03:59,818 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 2433 transitions. Word has length 20 [2021-04-15 03:03:59,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:03:59,818 INFO L480 AbstractCegarLoop]: Abstraction has 714 states and 2433 transitions. [2021-04-15 03:03:59,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:03:59,819 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 2433 transitions. [2021-04-15 03:03:59,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:03:59,820 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:03:59,820 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:04:00,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4136,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:04:00,021 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:04:00,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:04:00,021 INFO L82 PathProgramCache]: Analyzing trace with hash -976720680, now seen corresponding path program 40 times [2021-04-15 03:04:00,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:04:00,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922209769] [2021-04-15 03:04:00,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:04:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:04:00,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:04:00,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922209769] [2021-04-15 03:04:00,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184296930] [2021-04-15 03:04:00,378 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:04:00,418 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 03:04:00,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:04:00,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:04:00,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:04:00,708 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2021-04-15 03:04:01,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:01,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:01,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:04:01,204 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:01,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:01,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:01,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2021-04-15 03:04:01,216 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:01,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:01,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:01,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2021-04-15 03:04:01,229 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:01,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:01,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:04:01,241 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:01,817 WARN L205 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 116 [2021-04-15 03:04:01,818 INFO L628 ElimStorePlain]: treesize reduction 354, result has 52.2 percent of original size [2021-04-15 03:04:01,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:01,826 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:01,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:01,831 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:02,024 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-04-15 03:04:02,024 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:02,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:02,031 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:02,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:02,040 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:02,274 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-04-15 03:04:02,275 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:02,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:02,285 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:02,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:02,295 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:02,525 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-04-15 03:04:02,525 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:02,538 INFO L550 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 4 dim-1 vars, End of recursive call: 8 dim-0 vars, and 8 xjuncts. [2021-04-15 03:04:02,539 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 13 variables, input treesize:869, output treesize:361 [2021-04-15 03:04:02,813 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-04-15 03:04:03,228 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 89 [2021-04-15 03:04:05,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:05,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:05,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:04:05,208 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:05,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:05,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:05,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:04:05,224 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:05,237 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:04:05,238 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:05,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:05,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:04:05,253 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:05,738 WARN L205 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 98 [2021-04-15 03:04:05,739 INFO L628 ElimStorePlain]: treesize reduction 1081, result has 18.2 percent of original size [2021-04-15 03:04:05,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:05,747 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:05,897 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-04-15 03:04:05,898 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:05,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:05,907 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:06,055 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-04-15 03:04:06,056 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:06,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:06,064 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:06,216 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-04-15 03:04:06,216 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:06,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:06,225 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:06,365 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-04-15 03:04:06,365 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:06,365 INFO L518 ElimStorePlain]: Eliminatee v_prenex_349 vanished before elimination [2021-04-15 03:04:06,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:06,372 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:06,508 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-04-15 03:04:06,509 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:06,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:06,517 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:06,647 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-04-15 03:04:06,648 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:06,648 INFO L518 ElimStorePlain]: Eliminatee v_prenex_331 vanished before elimination [2021-04-15 03:04:06,648 INFO L518 ElimStorePlain]: Eliminatee v_prenex_342 vanished before elimination [2021-04-15 03:04:06,648 INFO L518 ElimStorePlain]: Eliminatee v_prenex_341 vanished before elimination [2021-04-15 03:04:06,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:04:06,655 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:06,787 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-04-15 03:04:06,788 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:06,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:06,795 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:06,923 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-04-15 03:04:06,924 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:06,924 INFO L518 ElimStorePlain]: Eliminatee v_prenex_333 vanished before elimination [2021-04-15 03:04:06,924 INFO L518 ElimStorePlain]: Eliminatee v_prenex_332 vanished before elimination [2021-04-15 03:04:06,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:06,932 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:07,056 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-04-15 03:04:07,056 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:07,056 INFO L518 ElimStorePlain]: Eliminatee v_prenex_346 vanished before elimination [2021-04-15 03:04:07,056 INFO L518 ElimStorePlain]: Eliminatee v_prenex_335 vanished before elimination [2021-04-15 03:04:07,057 INFO L518 ElimStorePlain]: Eliminatee v_prenex_345 vanished before elimination [2021-04-15 03:04:07,057 INFO L518 ElimStorePlain]: Eliminatee v_prenex_334 vanished before elimination [2021-04-15 03:04:07,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:07,064 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:07,179 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-04-15 03:04:07,180 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:07,180 INFO L518 ElimStorePlain]: Eliminatee v_prenex_348 vanished before elimination [2021-04-15 03:04:07,180 INFO L518 ElimStorePlain]: Eliminatee v_prenex_336 vanished before elimination [2021-04-15 03:04:07,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:07,185 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:07,281 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:07,284 INFO L550 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 24 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-04-15 03:04:07,284 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 34 variables, input treesize:1473, output treesize:160 [2021-04-15 03:04:07,486 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-15 03:04:07,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:04:07,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:04:07,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:04:07,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308743813] [2021-04-15 03:04:07,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:04:07,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:04:07,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:04:07,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:04:07,686 INFO L87 Difference]: Start difference. First operand 714 states and 2433 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:04:08,725 WARN L205 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 110 [2021-04-15 03:04:09,207 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2021-04-15 03:04:09,478 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2021-04-15 03:04:09,746 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2021-04-15 03:04:10,078 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2021-04-15 03:04:10,305 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2021-04-15 03:04:10,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:04:10,342 INFO L93 Difference]: Finished difference Result 1079 states and 3468 transitions. [2021-04-15 03:04:10,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-04-15 03:04:10,343 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:04:10,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:04:10,345 INFO L225 Difference]: With dead ends: 1079 [2021-04-15 03:04:10,345 INFO L226 Difference]: Without dead ends: 1019 [2021-04-15 03:04:10,345 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 3421.5ms TimeCoverageRelationStatistics Valid=221, Invalid=901, Unknown=0, NotChecked=0, Total=1122 [2021-04-15 03:04:10,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2021-04-15 03:04:10,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 728. [2021-04-15 03:04:10,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 727 states have (on average 3.4181568088033014) internal successors, (2485), 727 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:04:10,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 2485 transitions. [2021-04-15 03:04:10,358 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 2485 transitions. Word has length 20 [2021-04-15 03:04:10,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:04:10,358 INFO L480 AbstractCegarLoop]: Abstraction has 728 states and 2485 transitions. [2021-04-15 03:04:10,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:04:10,358 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 2485 transitions. [2021-04-15 03:04:10,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:04:10,359 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:04:10,359 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:04:10,560 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4833 [2021-04-15 03:04:10,560 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:04:10,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:04:10,560 INFO L82 PathProgramCache]: Analyzing trace with hash 208361300, now seen corresponding path program 41 times [2021-04-15 03:04:10,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:04:10,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988870778] [2021-04-15 03:04:10,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:04:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:04:10,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:04:10,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988870778] [2021-04-15 03:04:10,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170414257] [2021-04-15 03:04:10,909 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:04:10,947 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-04-15 03:04:10,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:04:10,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:04:10,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:04:11,312 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-04-15 03:04:11,599 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-04-15 03:04:11,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:04:11,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:04:11,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-04-15 03:04:11,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154263275] [2021-04-15 03:04:11,822 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-15 03:04:11,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:04:11,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-15 03:04:11,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-04-15 03:04:11,822 INFO L87 Difference]: Start difference. First operand 728 states and 2485 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:04:12,531 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2021-04-15 03:04:12,981 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2021-04-15 03:04:13,214 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2021-04-15 03:04:13,394 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2021-04-15 03:04:13,751 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2021-04-15 03:04:13,992 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2021-04-15 03:04:14,186 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2021-04-15 03:04:14,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:04:14,211 INFO L93 Difference]: Finished difference Result 1075 states and 3483 transitions. [2021-04-15 03:04:14,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-04-15 03:04:14,212 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:04:14,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:04:14,214 INFO L225 Difference]: With dead ends: 1075 [2021-04-15 03:04:14,214 INFO L226 Difference]: Without dead ends: 1000 [2021-04-15 03:04:14,214 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 2825.1ms TimeCoverageRelationStatistics Valid=227, Invalid=1033, Unknown=0, NotChecked=0, Total=1260 [2021-04-15 03:04:14,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2021-04-15 03:04:14,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 719. [2021-04-15 03:04:14,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 718 states have (on average 3.4192200557103063) internal successors, (2455), 718 states have internal predecessors, (2455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:04:14,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 2455 transitions. [2021-04-15 03:04:14,227 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 2455 transitions. Word has length 20 [2021-04-15 03:04:14,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:04:14,227 INFO L480 AbstractCegarLoop]: Abstraction has 719 states and 2455 transitions. [2021-04-15 03:04:14,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:04:14,227 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 2455 transitions. [2021-04-15 03:04:14,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:04:14,229 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:04:14,229 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:04:14,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5237,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:04:14,429 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:04:14,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:04:14,430 INFO L82 PathProgramCache]: Analyzing trace with hash -640261172, now seen corresponding path program 42 times [2021-04-15 03:04:14,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:04:14,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859395032] [2021-04-15 03:04:14,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:04:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:04:14,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:04:14,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859395032] [2021-04-15 03:04:14,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716922063] [2021-04-15 03:04:14,830 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:04:14,871 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-04-15 03:04:14,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:04:14,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:04:14,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:04:15,400 INFO L446 ElimStorePlain]: Different costs {10=[v_prenex_357], 21=[ends_with_2]} [2021-04-15 03:04:15,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:15,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:15,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:04:15,409 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:15,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:15,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:15,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:04:15,417 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:15,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:15,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:15,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:04:15,425 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:15,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:15,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:04:15,433 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:16,081 WARN L205 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 98 [2021-04-15 03:04:16,082 INFO L628 ElimStorePlain]: treesize reduction 462, result has 50.2 percent of original size [2021-04-15 03:04:16,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:04:16,091 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:16,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:04:16,100 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:16,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:16,108 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:16,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:16,117 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:16,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:16,126 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:16,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:16,134 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:16,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:16,144 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:16,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:16,153 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:16,432 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-04-15 03:04:16,432 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:16,445 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-1 vars, End of recursive call: 9 dim-0 vars, and 10 xjuncts. [2021-04-15 03:04:16,445 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 7 variables, input treesize:1041, output treesize:427 [2021-04-15 03:04:16,937 WARN L205 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 121 [2021-04-15 03:04:19,588 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:04:19,589 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:19,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:19,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:19,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:04:19,606 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:19,620 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:04:19,621 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:19,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:19,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:04:19,638 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:20,416 WARN L205 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 143 [2021-04-15 03:04:20,417 INFO L628 ElimStorePlain]: treesize reduction 1268, result has 23.2 percent of original size [2021-04-15 03:04:20,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:04:20,427 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:20,672 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-04-15 03:04:20,672 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:20,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:20,682 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:20,923 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-04-15 03:04:20,924 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:20,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:04:20,935 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:21,125 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-04-15 03:04:21,125 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:21,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:21,133 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:21,318 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-04-15 03:04:21,319 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:21,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:21,326 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:21,507 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2021-04-15 03:04:21,508 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:21,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:21,514 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:21,694 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-04-15 03:04:21,694 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:21,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:21,702 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:21,894 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-04-15 03:04:21,894 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:21,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:21,905 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:22,093 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-04-15 03:04:22,093 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:22,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:04:22,100 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:22,273 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-04-15 03:04:22,274 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:22,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:04:22,281 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:22,450 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-04-15 03:04:22,450 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:22,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:22,457 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:22,624 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-04-15 03:04:22,625 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:22,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:22,631 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:22,796 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-04-15 03:04:22,797 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:22,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:04:22,804 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:22,965 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-04-15 03:04:22,965 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:22,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:22,972 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:23,131 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-04-15 03:04:23,131 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:23,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:23,138 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:23,296 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-04-15 03:04:23,296 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:23,300 INFO L550 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 16 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-04-15 03:04:23,300 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 25 variables, input treesize:1825, output treesize:239 [2021-04-15 03:04:23,449 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-04-15 03:04:23,658 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-04-15 03:04:23,806 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-04-15 03:04:23,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:04:23,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:04:23,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-04-15 03:04:23,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659710605] [2021-04-15 03:04:23,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-15 03:04:23,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:04:23,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-15 03:04:23,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-04-15 03:04:23,878 INFO L87 Difference]: Start difference. First operand 719 states and 2455 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:04:24,676 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2021-04-15 03:04:25,008 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 84 [2021-04-15 03:04:25,409 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 52 [2021-04-15 03:04:25,660 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 69 [2021-04-15 03:04:26,013 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 50 [2021-04-15 03:04:26,342 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 56 [2021-04-15 03:04:26,663 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2021-04-15 03:04:26,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:04:26,677 INFO L93 Difference]: Finished difference Result 1192 states and 3719 transitions. [2021-04-15 03:04:26,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-04-15 03:04:26,677 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:04:26,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:04:26,679 INFO L225 Difference]: With dead ends: 1192 [2021-04-15 03:04:26,679 INFO L226 Difference]: Without dead ends: 1087 [2021-04-15 03:04:26,679 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 3647.3ms TimeCoverageRelationStatistics Valid=202, Invalid=610, Unknown=0, NotChecked=0, Total=812 [2021-04-15 03:04:26,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2021-04-15 03:04:26,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 741. [2021-04-15 03:04:26,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 740 states have (on average 3.443243243243243) internal successors, (2548), 740 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:04:26,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 2548 transitions. [2021-04-15 03:04:26,692 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 2548 transitions. Word has length 20 [2021-04-15 03:04:26,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:04:26,692 INFO L480 AbstractCegarLoop]: Abstraction has 741 states and 2548 transitions. [2021-04-15 03:04:26,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:04:26,692 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 2548 transitions. [2021-04-15 03:04:26,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:04:26,694 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:04:26,694 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:04:26,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5269,47 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:04:26,909 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:04:26,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:04:26,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1598197366, now seen corresponding path program 43 times [2021-04-15 03:04:26,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:04:26,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471092122] [2021-04-15 03:04:26,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:04:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:04:27,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:04:27,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471092122] [2021-04-15 03:04:27,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300663307] [2021-04-15 03:04:27,172 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:04:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:04:27,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:04:27,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:04:27,418 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2021-04-15 03:04:27,647 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 52 [2021-04-15 03:04:27,930 INFO L446 ElimStorePlain]: Different costs {6=[ends_with_2, v_prenex_383], 10=[v_prenex_381]} [2021-04-15 03:04:27,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:27,938 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:27,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:27,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:27,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:04:27,946 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:27,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:27,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:27,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:04:27,954 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:27,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:27,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:04:27,961 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:28,498 WARN L205 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 92 [2021-04-15 03:04:28,498 INFO L628 ElimStorePlain]: treesize reduction 250, result has 66.6 percent of original size [2021-04-15 03:04:28,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:04:28,504 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:28,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:04:28,510 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:28,750 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-04-15 03:04:28,750 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:28,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:28,757 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:28,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:28,762 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:28,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:28,768 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:28,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:28,774 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:28,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:28,779 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:28,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:28,785 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:28,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:28,791 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:28,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:28,796 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:28,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:28,802 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:29,027 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-04-15 03:04:29,027 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:29,038 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 3 dim-1 vars, End of recursive call: 10 dim-0 vars, and 13 xjuncts. [2021-04-15 03:04:29,038 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 10 variables, input treesize:836, output treesize:443 [2021-04-15 03:04:29,349 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 103 [2021-04-15 03:04:31,373 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:04:31,374 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:31,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:31,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:31,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:04:31,383 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:31,390 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:04:31,390 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:31,397 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:04:31,397 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:31,650 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 70 [2021-04-15 03:04:31,651 INFO L628 ElimStorePlain]: treesize reduction 602, result has 23.4 percent of original size [2021-04-15 03:04:31,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:31,656 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:31,740 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:31,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:04:31,745 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:31,838 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:31,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:04:31,843 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:31,925 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:31,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:31,930 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:32,010 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:32,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:32,015 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:32,094 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:32,095 INFO L518 ElimStorePlain]: Eliminatee v_prenex_397 vanished before elimination [2021-04-15 03:04:32,095 INFO L518 ElimStorePlain]: Eliminatee v_prenex_396 vanished before elimination [2021-04-15 03:04:32,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:32,099 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:32,177 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:32,177 INFO L518 ElimStorePlain]: Eliminatee v_prenex_398 vanished before elimination [2021-04-15 03:04:32,177 INFO L518 ElimStorePlain]: Eliminatee v_prenex_401 vanished before elimination [2021-04-15 03:04:32,177 INFO L518 ElimStorePlain]: Eliminatee v_prenex_400 vanished before elimination [2021-04-15 03:04:32,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:32,181 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:32,256 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:32,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:32,261 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:32,337 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:32,337 INFO L518 ElimStorePlain]: Eliminatee v_prenex_393 vanished before elimination [2021-04-15 03:04:32,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:32,341 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:32,414 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:32,414 INFO L518 ElimStorePlain]: Eliminatee v_prenex_395 vanished before elimination [2021-04-15 03:04:32,414 INFO L518 ElimStorePlain]: Eliminatee v_prenex_394 vanished before elimination [2021-04-15 03:04:32,416 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 18 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-04-15 03:04:32,416 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 24 variables, input treesize:917, output treesize:136 [2021-04-15 03:04:32,548 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-04-15 03:04:32,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:04:32,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:04:32,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:04:32,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475882804] [2021-04-15 03:04:32,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:04:32,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:04:32,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:04:32,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:04:32,629 INFO L87 Difference]: Start difference. First operand 741 states and 2548 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:04:33,370 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 88 [2021-04-15 03:04:33,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:04:33,549 INFO L93 Difference]: Finished difference Result 874 states and 2923 transitions. [2021-04-15 03:04:33,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-15 03:04:33,550 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:04:33,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:04:33,551 INFO L225 Difference]: With dead ends: 874 [2021-04-15 03:04:33,551 INFO L226 Difference]: Without dead ends: 859 [2021-04-15 03:04:33,551 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1711.6ms TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2021-04-15 03:04:33,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2021-04-15 03:04:33,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 739. [2021-04-15 03:04:33,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 738 states have (on average 3.4430894308943087) internal successors, (2541), 738 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:04:33,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 2541 transitions. [2021-04-15 03:04:33,560 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 2541 transitions. Word has length 20 [2021-04-15 03:04:33,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:04:33,561 INFO L480 AbstractCegarLoop]: Abstraction has 739 states and 2541 transitions. [2021-04-15 03:04:33,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:04:33,561 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 2541 transitions. [2021-04-15 03:04:33,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:04:33,562 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:04:33,562 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:04:33,762 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5945,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:04:33,762 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:04:33,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:04:33,763 INFO L82 PathProgramCache]: Analyzing trace with hash -877073888, now seen corresponding path program 44 times [2021-04-15 03:04:33,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:04:33,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316259459] [2021-04-15 03:04:33,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:04:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:04:34,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:04:34,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316259459] [2021-04-15 03:04:34,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972358798] [2021-04-15 03:04:34,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:04:34,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:04:34,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:04:34,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:04:34,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:04:34,416 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2021-04-15 03:04:34,612 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 64 [2021-04-15 03:04:35,019 INFO L446 ElimStorePlain]: Different costs {6=[ends_with_10], 15=[v_prenex_417]} [2021-04-15 03:04:35,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:35,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:35,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:04:35,030 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:35,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:35,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:35,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:04:35,040 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:35,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:35,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:35,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:04:35,052 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:35,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:35,061 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:35,541 WARN L205 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 108 [2021-04-15 03:04:35,541 INFO L628 ElimStorePlain]: treesize reduction 219, result has 66.4 percent of original size [2021-04-15 03:04:35,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:35,547 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:35,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:04:35,553 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:35,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:35,559 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:35,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:35,565 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:35,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:35,571 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:35,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:35,577 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:35,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:35,583 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:35,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:35,589 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:35,783 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-04-15 03:04:35,783 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:35,794 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-1 vars, End of recursive call: 9 dim-0 vars, and 10 xjuncts. [2021-04-15 03:04:35,794 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 7 variables, input treesize:753, output treesize:395 [2021-04-15 03:04:36,107 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 119 [2021-04-15 03:04:39,782 INFO L446 ElimStorePlain]: Different costs {15=[ends_with_2, v_prenex_423], 21=[v_prenex_434, v_prenex_424, ends_with_6], 28=[v_prenex_435]} [2021-04-15 03:04:39,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:39,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:39,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2021-04-15 03:04:39,798 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:39,811 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:04:39,812 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:39,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:39,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:39,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:04:39,827 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:39,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:39,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:39,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:04:39,841 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:39,853 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:04:39,854 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:39,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:04:39,868 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:39,881 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:04:39,882 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:39,898 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:04:39,899 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:40,758 WARN L205 SmtUtils]: Spent 859.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 149 [2021-04-15 03:04:40,759 INFO L628 ElimStorePlain]: treesize reduction 1230, result has 32.0 percent of original size [2021-04-15 03:04:40,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:40,767 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:40,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:40,775 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:41,081 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-04-15 03:04:41,081 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:41,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:41,090 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:41,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:41,099 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:41,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:41,108 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:41,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:41,117 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:41,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:41,125 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:41,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:41,134 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:41,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:41,142 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:41,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:41,149 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:41,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:41,157 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:41,436 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-04-15 03:04:41,437 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:41,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:41,445 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:41,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:41,453 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:41,716 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2021-04-15 03:04:41,717 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:41,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:41,724 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:41,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:41,731 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:42,000 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-04-15 03:04:42,001 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:42,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:04:42,010 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:42,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:04:42,019 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:42,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:42,028 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:42,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:42,038 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:42,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:42,047 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:42,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:42,058 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:42,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:42,068 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:42,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:42,080 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:42,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:42,092 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:42,335 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-04-15 03:04:42,336 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:42,344 INFO L550 ElimStorePlain]: Start of recursive call 1: 25 dim-0 vars, 6 dim-1 vars, End of recursive call: and 13 xjuncts. [2021-04-15 03:04:42,344 INFO L247 ElimStorePlain]: Needed 33 recursive calls to eliminate 31 variables, input treesize:2156, output treesize:344 [2021-04-15 03:04:42,609 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-04-15 03:04:42,776 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2021-04-15 03:04:42,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:04:42,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:04:42,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-04-15 03:04:42,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254791897] [2021-04-15 03:04:42,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-15 03:04:42,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:04:42,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-15 03:04:42,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2021-04-15 03:04:42,875 INFO L87 Difference]: Start difference. First operand 739 states and 2541 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:04:43,675 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2021-04-15 03:04:43,927 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2021-04-15 03:04:44,197 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 48 [2021-04-15 03:04:44,582 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2021-04-15 03:04:44,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:04:44,624 INFO L93 Difference]: Finished difference Result 886 states and 2952 transitions. [2021-04-15 03:04:44,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-15 03:04:44,624 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:04:44,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:04:44,626 INFO L225 Difference]: With dead ends: 886 [2021-04-15 03:04:44,626 INFO L226 Difference]: Without dead ends: 841 [2021-04-15 03:04:44,626 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2778.4ms TimeCoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2021-04-15 03:04:44,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2021-04-15 03:04:44,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 741. [2021-04-15 03:04:44,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 740 states have (on average 3.443243243243243) internal successors, (2548), 740 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:04:44,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 2548 transitions. [2021-04-15 03:04:44,637 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 2548 transitions. Word has length 20 [2021-04-15 03:04:44,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:04:44,637 INFO L480 AbstractCegarLoop]: Abstraction has 741 states and 2548 transitions. [2021-04-15 03:04:44,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:04:44,637 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 2548 transitions. [2021-04-15 03:04:44,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:04:44,638 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:04:44,638 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:04:44,838 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6204,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:04:44,839 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:04:44,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:04:44,839 INFO L82 PathProgramCache]: Analyzing trace with hash -570151136, now seen corresponding path program 45 times [2021-04-15 03:04:44,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:04:44,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474308401] [2021-04-15 03:04:44,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:04:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:04:45,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:04:45,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474308401] [2021-04-15 03:04:45,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230768971] [2021-04-15 03:04:45,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:04:45,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-04-15 03:04:45,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:04:45,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:04:45,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:04:45,406 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2021-04-15 03:04:46,046 INFO L446 ElimStorePlain]: Different costs {6=[v_prenex_446, v_prenex_448], 10=[ends_with_10]} [2021-04-15 03:04:46,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:46,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:46,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:04:46,058 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:46,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:46,068 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:46,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:46,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:46,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:04:46,079 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:46,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:46,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:04:46,089 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:46,901 WARN L205 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 148 [2021-04-15 03:04:46,902 INFO L628 ElimStorePlain]: treesize reduction 323, result has 68.4 percent of original size [2021-04-15 03:04:46,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:46,909 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:46,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:46,917 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:46,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:46,925 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:47,267 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2021-04-15 03:04:47,267 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:47,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:47,275 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:47,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:47,283 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:47,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:47,291 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:47,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:04:47,299 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:47,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:04:47,307 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:47,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:47,315 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:47,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:47,324 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:47,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:47,332 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:47,948 WARN L205 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 135 [2021-04-15 03:04:47,949 INFO L628 ElimStorePlain]: treesize reduction 52, result has 91.9 percent of original size [2021-04-15 03:04:47,963 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 3 dim-1 vars, End of recursive call: 10 dim-0 vars, and 12 xjuncts. [2021-04-15 03:04:47,963 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 10 variables, input treesize:1144, output treesize:590 [2021-04-15 03:04:48,397 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 141 [2021-04-15 03:04:55,846 INFO L446 ElimStorePlain]: Different costs {15=[v_prenex_484], 21=[v_prenex_485], 120=[ends_with_2], 136=[ends_with_6]} [2021-04-15 03:04:55,868 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:04:55,869 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:55,884 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:04:55,885 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:55,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:55,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:55,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:04:55,902 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:55,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:55,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:55,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:04:55,919 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:55,933 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:04:55,934 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:55,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:55,949 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:55,965 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:04:55,966 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:55,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:04:55,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:04:55,991 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:57,011 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 349 DAG size of output: 189 [2021-04-15 03:04:57,012 INFO L628 ElimStorePlain]: treesize reduction 1450, result has 32.7 percent of original size [2021-04-15 03:04:57,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:57,022 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:57,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:57,030 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:57,384 WARN L205 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2021-04-15 03:04:57,384 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:57,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:57,393 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:57,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:04:57,401 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:57,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:57,410 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:57,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:57,418 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:57,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:57,428 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:57,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:57,436 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:57,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:57,446 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:57,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:57,455 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:57,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:57,467 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:57,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:57,478 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:57,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:57,489 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:57,808 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2021-04-15 03:04:57,808 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:57,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:57,820 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:57,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:57,831 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:57,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:04:57,842 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:57,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:04:57,852 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:57,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:57,862 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:57,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:57,873 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:57,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:57,886 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:57,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:57,899 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:57,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:04:57,911 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:57,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:04:57,922 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:57,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:04:57,934 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-04-15 03:04:58,227 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-04-15 03:04:58,227 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:04:58,234 INFO L550 ElimStorePlain]: Start of recursive call 1: 33 dim-0 vars, 4 dim-1 vars, End of recursive call: and 13 xjuncts. [2021-04-15 03:04:58,234 INFO L247 ElimStorePlain]: Needed 33 recursive calls to eliminate 37 variables, input treesize:2532, output treesize:486 [2021-04-15 03:04:58,602 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2021-04-15 03:04:58,788 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-04-15 03:04:59,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:04:59,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:04:59,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-04-15 03:04:59,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619694708] [2021-04-15 03:04:59,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-15 03:04:59,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:04:59,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-15 03:04:59,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-04-15 03:04:59,002 INFO L87 Difference]: Start difference. First operand 741 states and 2548 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:04:59,800 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 37 [2021-04-15 03:05:00,158 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 73 [2021-04-15 03:05:00,938 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2021-04-15 03:05:01,273 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 80 [2021-04-15 03:05:01,647 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2021-04-15 03:05:02,099 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2021-04-15 03:05:02,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:05:02,144 INFO L93 Difference]: Finished difference Result 1205 states and 3895 transitions. [2021-04-15 03:05:02,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-04-15 03:05:02,152 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:05:02,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:05:02,155 INFO L225 Difference]: With dead ends: 1205 [2021-04-15 03:05:02,156 INFO L226 Difference]: Without dead ends: 1160 [2021-04-15 03:05:02,156 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 3937.1ms TimeCoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2021-04-15 03:05:02,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2021-04-15 03:05:02,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 743. [2021-04-15 03:05:02,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 742 states have (on average 3.4487870619946093) internal successors, (2559), 742 states have internal predecessors, (2559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:02,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 2559 transitions. [2021-04-15 03:05:02,175 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 2559 transitions. Word has length 20 [2021-04-15 03:05:02,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:05:02,175 INFO L480 AbstractCegarLoop]: Abstraction has 743 states and 2559 transitions. [2021-04-15 03:05:02,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:02,175 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 2559 transitions. [2021-04-15 03:05:02,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:05:02,177 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:05:02,177 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:05:02,391 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6528 [2021-04-15 03:05:02,392 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:05:02,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:05:02,392 INFO L82 PathProgramCache]: Analyzing trace with hash -153141940, now seen corresponding path program 46 times [2021-04-15 03:05:02,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:05:02,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534851768] [2021-04-15 03:05:02,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:05:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:05:02,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:02,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534851768] [2021-04-15 03:05:02,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317656070] [2021-04-15 03:05:02,683 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:05:02,723 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 03:05:02,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:05:02,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:05:02,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:05:03,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:03,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:03,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:03,910 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:03,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:03,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:03,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:05:03,921 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:03,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:03,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:03,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:05:03,935 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:03,943 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:03,944 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:03,952 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:03,954 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:03,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:03,964 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:03,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:05:03,965 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:03,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:03,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:03,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:05:03,976 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:03,985 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:03,986 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:03,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:03,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:03,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:05:03,998 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:04,009 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,017 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:04,018 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,026 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:04,027 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,036 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:04,037 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,046 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:04,048 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:04,059 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,070 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:04,071 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,080 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:04,081 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:05:04,093 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:05:04,105 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:05:04,116 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,124 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:04,126 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:05:04,138 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:05:04,150 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:05:04,162 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,172 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,173 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:05:04,174 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:05:04,185 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,193 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:04,194 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,202 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:04,203 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,211 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:04,212 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,220 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:04,221 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,229 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:04,230 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,237 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:04,239 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:05:04,250 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:05:04,261 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:04,270 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,277 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:04,278 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:05:04,286 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,292 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:04,293 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,300 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:04,301 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,308 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:04,309 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:05:04,318 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:04,327 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:05:04,336 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,342 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:04,343 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:05:04,351 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,358 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:04,359 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:05:04,370 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:05:04,379 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,386 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:04,387 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:04,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:05:04,395 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,767 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-04-15 03:05:04,767 INFO L628 ElimStorePlain]: treesize reduction 65, result has 82.3 percent of original size [2021-04-15 03:05:04,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:05:04,774 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:05:04,781 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:05:04,788 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:05:04,795 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:05:04,801 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:05:04,808 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:04,960 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-04-15 03:05:04,961 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:04,963 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-04-15 03:05:04,964 INFO L247 ElimStorePlain]: Needed 57 recursive calls to eliminate 3 variables, input treesize:2170, output treesize:240 [2021-04-15 03:05:05,204 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-04-15 03:05:05,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:05,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:05:05,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-04-15 03:05:05,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97205748] [2021-04-15 03:05:05,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-15 03:05:05,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:05:05,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-15 03:05:05,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-04-15 03:05:05,499 INFO L87 Difference]: Start difference. First operand 743 states and 2559 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:06,219 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2021-04-15 03:05:06,463 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2021-04-15 03:05:06,776 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2021-04-15 03:05:07,029 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-04-15 03:05:07,518 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-04-15 03:05:07,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:05:07,529 INFO L93 Difference]: Finished difference Result 1142 states and 3640 transitions. [2021-04-15 03:05:07,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-04-15 03:05:07,529 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:05:07,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:05:07,531 INFO L225 Difference]: With dead ends: 1142 [2021-04-15 03:05:07,531 INFO L226 Difference]: Without dead ends: 1052 [2021-04-15 03:05:07,531 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 2538.6ms TimeCoverageRelationStatistics Valid=189, Invalid=567, Unknown=0, NotChecked=0, Total=756 [2021-04-15 03:05:07,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2021-04-15 03:05:07,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 757. [2021-04-15 03:05:07,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 756 states have (on average 3.458994708994709) internal successors, (2615), 756 states have internal predecessors, (2615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:07,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 2615 transitions. [2021-04-15 03:05:07,543 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 2615 transitions. Word has length 20 [2021-04-15 03:05:07,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:05:07,543 INFO L480 AbstractCegarLoop]: Abstraction has 757 states and 2615 transitions. [2021-04-15 03:05:07,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:07,543 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 2615 transitions. [2021-04-15 03:05:07,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:05:07,545 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:05:07,545 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:05:07,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7158 [2021-04-15 03:05:07,761 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:05:07,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:05:07,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1665161384, now seen corresponding path program 47 times [2021-04-15 03:05:07,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:05:07,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28619115] [2021-04-15 03:05:07,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:05:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:05:08,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:08,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28619115] [2021-04-15 03:05:08,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300528635] [2021-04-15 03:05:08,076 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:05:08,114 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:05:08,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:05:08,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:05:08,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:05:08,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:08,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:05:08,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-04-15 03:05:08,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852289747] [2021-04-15 03:05:08,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-15 03:05:08,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:05:08,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-15 03:05:08,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-04-15 03:05:08,653 INFO L87 Difference]: Start difference. First operand 757 states and 2615 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:09,103 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2021-04-15 03:05:09,315 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51 [2021-04-15 03:05:09,476 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2021-04-15 03:05:09,640 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 41 [2021-04-15 03:05:10,035 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2021-04-15 03:05:10,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:05:10,434 INFO L93 Difference]: Finished difference Result 934 states and 3087 transitions. [2021-04-15 03:05:10,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-04-15 03:05:10,434 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:05:10,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:05:10,436 INFO L225 Difference]: With dead ends: 934 [2021-04-15 03:05:10,436 INFO L226 Difference]: Without dead ends: 904 [2021-04-15 03:05:10,436 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 2085.6ms TimeCoverageRelationStatistics Valid=188, Invalid=868, Unknown=0, NotChecked=0, Total=1056 [2021-04-15 03:05:10,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2021-04-15 03:05:10,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 752. [2021-04-15 03:05:10,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 751 states have (on average 3.4580559254327565) internal successors, (2597), 751 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:10,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 2597 transitions. [2021-04-15 03:05:10,446 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 2597 transitions. Word has length 20 [2021-04-15 03:05:10,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:05:10,446 INFO L480 AbstractCegarLoop]: Abstraction has 752 states and 2597 transitions. [2021-04-15 03:05:10,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:10,446 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 2597 transitions. [2021-04-15 03:05:10,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:05:10,447 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:05:10,447 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:05:10,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7497 [2021-04-15 03:05:10,648 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:05:10,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:05:10,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1843084844, now seen corresponding path program 48 times [2021-04-15 03:05:10,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:05:10,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814914693] [2021-04-15 03:05:10,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:05:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:05:10,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:10,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814914693] [2021-04-15 03:05:10,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740320940] [2021-04-15 03:05:10,988 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:05:11,027 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-04-15 03:05:11,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:05:11,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 37 conjunts are in the unsatisfiable core [2021-04-15 03:05:11,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:05:11,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:11,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:05:11,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-04-15 03:05:11,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094911108] [2021-04-15 03:05:11,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-15 03:05:11,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:05:11,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-15 03:05:11,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-04-15 03:05:11,481 INFO L87 Difference]: Start difference. First operand 752 states and 2597 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:11,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:05:11,905 INFO L93 Difference]: Finished difference Result 832 states and 2827 transitions. [2021-04-15 03:05:11,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 03:05:11,906 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:05:11,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:05:11,907 INFO L225 Difference]: With dead ends: 832 [2021-04-15 03:05:11,907 INFO L226 Difference]: Without dead ends: 817 [2021-04-15 03:05:11,907 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 719.0ms TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2021-04-15 03:05:11,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2021-04-15 03:05:11,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 752. [2021-04-15 03:05:11,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 751 states have (on average 3.4580559254327565) internal successors, (2597), 751 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:11,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 2597 transitions. [2021-04-15 03:05:11,917 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 2597 transitions. Word has length 20 [2021-04-15 03:05:11,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:05:11,917 INFO L480 AbstractCegarLoop]: Abstraction has 752 states and 2597 transitions. [2021-04-15 03:05:11,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:11,917 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 2597 transitions. [2021-04-15 03:05:11,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:05:11,919 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:05:11,919 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:05:12,130 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7523,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:05:12,130 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:05:12,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:05:12,131 INFO L82 PathProgramCache]: Analyzing trace with hash 2081522154, now seen corresponding path program 49 times [2021-04-15 03:05:12,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:05:12,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653828928] [2021-04-15 03:05:12,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:05:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:05:12,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:12,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653828928] [2021-04-15 03:05:12,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259018602] [2021-04-15 03:05:12,380 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:05:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:05:12,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:05:12,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:05:12,736 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2021-04-15 03:05:13,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:13,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:05:13,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:05:13,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90421588] [2021-04-15 03:05:13,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:05:13,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:05:13,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:05:13,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:05:13,008 INFO L87 Difference]: Start difference. First operand 752 states and 2597 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:13,321 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2021-04-15 03:05:13,509 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2021-04-15 03:05:13,689 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-04-15 03:05:14,095 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-04-15 03:05:14,345 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2021-04-15 03:05:14,543 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2021-04-15 03:05:14,671 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2021-04-15 03:05:14,943 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2021-04-15 03:05:15,098 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2021-04-15 03:05:15,292 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2021-04-15 03:05:15,442 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2021-04-15 03:05:15,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:05:15,445 INFO L93 Difference]: Finished difference Result 1050 states and 3354 transitions. [2021-04-15 03:05:15,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-04-15 03:05:15,446 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:05:15,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:05:15,448 INFO L225 Difference]: With dead ends: 1050 [2021-04-15 03:05:15,448 INFO L226 Difference]: Without dead ends: 975 [2021-04-15 03:05:15,448 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 2667.9ms TimeCoverageRelationStatistics Valid=193, Invalid=737, Unknown=0, NotChecked=0, Total=930 [2021-04-15 03:05:15,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2021-04-15 03:05:15,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 759. [2021-04-15 03:05:15,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 3.453825857519789) internal successors, (2618), 758 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:15,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 2618 transitions. [2021-04-15 03:05:15,462 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 2618 transitions. Word has length 20 [2021-04-15 03:05:15,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:05:15,462 INFO L480 AbstractCegarLoop]: Abstraction has 759 states and 2618 transitions. [2021-04-15 03:05:15,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:15,462 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 2618 transitions. [2021-04-15 03:05:15,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:05:15,464 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:05:15,464 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:05:15,685 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7544 [2021-04-15 03:05:15,686 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:05:15,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:05:15,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1028363162, now seen corresponding path program 50 times [2021-04-15 03:05:15,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:05:15,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403236898] [2021-04-15 03:05:15,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:05:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:05:15,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:15,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403236898] [2021-04-15 03:05:15,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506789644] [2021-04-15 03:05:15,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:05:16,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:05:16,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:05:16,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 37 conjunts are in the unsatisfiable core [2021-04-15 03:05:16,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:05:16,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:16,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:05:16,305 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:16,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:16,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:05:16,312 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:16,318 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:16,319 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:16,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:16,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:05:16,326 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:16,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:16,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:16,334 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:16,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:16,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:16,342 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:16,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:16,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:05:16,350 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:16,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:16,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:05:16,358 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:16,362 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:16,364 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:16,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:16,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:16,372 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:16,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:16,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:16,380 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:16,385 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:16,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:16,387 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:16,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:16,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:05:16,394 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:16,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:16,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:16,400 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:16,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:16,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:05:16,408 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:16,413 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:16,415 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:16,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:16,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:16,421 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:16,425 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:16,426 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:16,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:16,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:16,433 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:16,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:05:16,440 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:16,668 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2021-04-15 03:05:16,669 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.5 percent of original size [2021-04-15 03:05:16,670 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-04-15 03:05:16,670 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 1 variables, input treesize:699, output treesize:220 [2021-04-15 03:05:16,798 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-04-15 03:05:16,978 INFO L446 ElimStorePlain]: Different costs {0=[ends_with_6], 1=[ends_with_10]} [2021-04-15 03:05:16,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:05:16,984 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:16,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:05:16,990 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:16,994 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:16,995 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:17,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:05:17,001 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:17,215 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2021-04-15 03:05:17,216 INFO L628 ElimStorePlain]: treesize reduction 66, result has 69.6 percent of original size [2021-04-15 03:05:17,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:05:17,221 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:17,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:05:17,226 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:17,298 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:17,300 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-04-15 03:05:17,300 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 2 variables, input treesize:272, output treesize:143 [2021-04-15 03:05:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:17,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:05:17,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:05:17,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081281324] [2021-04-15 03:05:17,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:05:17,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:05:17,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:05:17,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:05:17,661 INFO L87 Difference]: Start difference. First operand 759 states and 2618 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:18,157 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-04-15 03:05:18,392 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2021-04-15 03:05:18,722 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-04-15 03:05:18,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:05:18,726 INFO L93 Difference]: Finished difference Result 962 states and 3188 transitions. [2021-04-15 03:05:18,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-04-15 03:05:18,727 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:05:18,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:05:18,728 INFO L225 Difference]: With dead ends: 962 [2021-04-15 03:05:18,729 INFO L226 Difference]: Without dead ends: 947 [2021-04-15 03:05:18,729 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1576.7ms TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2021-04-15 03:05:18,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2021-04-15 03:05:18,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 759. [2021-04-15 03:05:18,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 3.453825857519789) internal successors, (2618), 758 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:18,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 2618 transitions. [2021-04-15 03:05:18,738 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 2618 transitions. Word has length 20 [2021-04-15 03:05:18,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:05:18,738 INFO L480 AbstractCegarLoop]: Abstraction has 759 states and 2618 transitions. [2021-04-15 03:05:18,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:18,738 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 2618 transitions. [2021-04-15 03:05:18,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:05:18,739 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:05:18,739 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:05:18,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7566 [2021-04-15 03:05:18,940 INFO L428 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:05:18,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:05:18,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1968711554, now seen corresponding path program 51 times [2021-04-15 03:05:18,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:05:18,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107700462] [2021-04-15 03:05:18,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:05:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:05:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:19,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107700462] [2021-04-15 03:05:19,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909839218] [2021-04-15 03:05:19,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:05:19,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-04-15 03:05:19,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:05:19,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:05:19,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:05:19,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:19,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:19,466 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:19,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:19,472 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:19,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:05:19,478 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:19,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:19,483 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:19,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:19,488 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:19,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:19,494 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:19,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:19,500 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:19,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:19,506 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:19,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:05:19,513 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:19,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:05:19,518 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:19,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:05:19,524 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:19,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:05:19,530 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:19,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:05:19,537 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,541 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:19,542 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:19,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:05:19,548 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:19,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:19,553 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:19,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:05:19,561 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:19,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:19,567 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:19,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:19,572 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:19,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:05:19,577 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:19,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:05:19,582 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:19,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:05:19,587 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:19,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:19,592 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:19,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:05:19,597 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:19,601 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:19,877 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-04-15 03:05:19,877 INFO L628 ElimStorePlain]: treesize reduction 124, result has 65.7 percent of original size [2021-04-15 03:05:19,879 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-04-15 03:05:19,879 INFO L247 ElimStorePlain]: Needed 26 recursive calls to eliminate 1 variables, input treesize:941, output treesize:237 [2021-04-15 03:05:20,027 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-04-15 03:05:20,216 INFO L446 ElimStorePlain]: Different costs {0=[ends_with_6, v_prenex_490, v_prenex_492, v_prenex_494], 1=[v_prenex_489, ends_with_10, v_prenex_491, v_prenex_493]} [2021-04-15 03:05:20,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:05:20,222 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:20,226 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:20,226 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:20,428 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2021-04-15 03:05:20,429 INFO L628 ElimStorePlain]: treesize reduction 124, result has 57.8 percent of original size [2021-04-15 03:05:20,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:05:20,434 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:20,520 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:20,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:05:20,524 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:20,609 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:20,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:05:20,614 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:20,698 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:20,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:05:20,703 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:20,784 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:20,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:05:20,789 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:20,870 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:20,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:05:20,875 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:20,955 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:20,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:05:20,960 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:21,036 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:21,037 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-04-15 03:05:21,037 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 8 variables, input treesize:337, output treesize:127 [2021-04-15 03:05:21,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:21,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:05:21,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:05:21,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334717194] [2021-04-15 03:05:21,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:05:21,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:05:21,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:05:21,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:05:21,283 INFO L87 Difference]: Start difference. First operand 759 states and 2618 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:21,870 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-04-15 03:05:22,043 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2021-04-15 03:05:22,479 WARN L205 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2021-04-15 03:05:22,658 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-04-15 03:05:22,892 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-04-15 03:05:23,147 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2021-04-15 03:05:23,402 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 34 [2021-04-15 03:05:23,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:05:23,448 INFO L93 Difference]: Finished difference Result 1072 states and 3455 transitions. [2021-04-15 03:05:23,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-15 03:05:23,449 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:05:23,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:05:23,450 INFO L225 Difference]: With dead ends: 1072 [2021-04-15 03:05:23,450 INFO L226 Difference]: Without dead ends: 1012 [2021-04-15 03:05:23,450 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 2435.6ms TimeCoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2021-04-15 03:05:23,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2021-04-15 03:05:23,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 785. [2021-04-15 03:05:23,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 784 states have (on average 3.457908163265306) internal successors, (2711), 784 states have internal predecessors, (2711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:23,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 2711 transitions. [2021-04-15 03:05:23,461 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 2711 transitions. Word has length 20 [2021-04-15 03:05:23,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:05:23,461 INFO L480 AbstractCegarLoop]: Abstraction has 785 states and 2711 transitions. [2021-04-15 03:05:23,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:23,461 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 2711 transitions. [2021-04-15 03:05:23,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:05:23,462 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:05:23,462 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:05:23,662 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7636,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:05:23,663 INFO L428 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:05:23,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:05:23,663 INFO L82 PathProgramCache]: Analyzing trace with hash 731689778, now seen corresponding path program 52 times [2021-04-15 03:05:23,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:05:23,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529678212] [2021-04-15 03:05:23,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:05:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:05:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:23,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529678212] [2021-04-15 03:05:23,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793610438] [2021-04-15 03:05:23,961 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:05:24,000 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 03:05:24,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:05:24,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:05:24,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:05:24,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:05:24,263 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:24,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:05:24,269 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:24,274 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:24,275 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:24,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:05:24,281 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:24,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:05:24,287 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:24,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:05:24,292 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:24,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:05:24,299 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:24,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:05:24,304 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:24,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:05:24,310 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:24,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:05:24,319 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:24,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:05:24,325 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:24,330 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:24,330 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:24,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:05:24,336 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:24,759 WARN L205 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2021-04-15 03:05:24,760 INFO L628 ElimStorePlain]: treesize reduction 41, result has 90.4 percent of original size [2021-04-15 03:05:24,764 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 10 xjuncts. [2021-04-15 03:05:24,764 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 2 variables, input treesize:582, output treesize:387 [2021-04-15 03:05:25,155 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2021-04-15 03:05:26,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:26,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:05:26,387 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:27,029 WARN L205 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 114 [2021-04-15 03:05:27,029 INFO L628 ElimStorePlain]: treesize reduction 1178, result has 20.7 percent of original size [2021-04-15 03:05:27,030 INFO L518 ElimStorePlain]: Eliminatee v_prenex_537 vanished before elimination [2021-04-15 03:05:27,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:05:27,037 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:27,218 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-04-15 03:05:27,218 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:27,218 INFO L518 ElimStorePlain]: Eliminatee v_prenex_536 vanished before elimination [2021-04-15 03:05:27,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:05:27,225 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:27,403 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-04-15 03:05:27,403 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:27,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:05:27,410 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:27,576 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-04-15 03:05:27,576 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:27,576 INFO L518 ElimStorePlain]: Eliminatee v_prenex_517 vanished before elimination [2021-04-15 03:05:27,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:05:27,584 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:27,757 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-04-15 03:05:27,757 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:27,757 INFO L518 ElimStorePlain]: Eliminatee v_prenex_516 vanished before elimination [2021-04-15 03:05:27,758 INFO L518 ElimStorePlain]: Eliminatee v_prenex_519 vanished before elimination [2021-04-15 03:05:27,758 INFO L518 ElimStorePlain]: Eliminatee v_prenex_518 vanished before elimination [2021-04-15 03:05:27,758 INFO L518 ElimStorePlain]: Eliminatee v_prenex_540 vanished before elimination [2021-04-15 03:05:27,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:05:27,764 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:27,929 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-04-15 03:05:27,929 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:27,929 INFO L518 ElimStorePlain]: Eliminatee v_prenex_520 vanished before elimination [2021-04-15 03:05:27,929 INFO L518 ElimStorePlain]: Eliminatee v_prenex_541 vanished before elimination [2021-04-15 03:05:27,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:05:27,936 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:28,097 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-04-15 03:05:28,098 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:28,098 INFO L518 ElimStorePlain]: Eliminatee v_prenex_500 vanished before elimination [2021-04-15 03:05:28,098 INFO L518 ElimStorePlain]: Eliminatee v_prenex_522 vanished before elimination [2021-04-15 03:05:28,098 INFO L518 ElimStorePlain]: Eliminatee v_prenex_521 vanished before elimination [2021-04-15 03:05:28,098 INFO L518 ElimStorePlain]: Eliminatee v_prenex_502 vanished before elimination [2021-04-15 03:05:28,098 INFO L518 ElimStorePlain]: Eliminatee v_prenex_501 vanished before elimination [2021-04-15 03:05:28,098 INFO L518 ElimStorePlain]: Eliminatee v_prenex_523 vanished before elimination [2021-04-15 03:05:28,098 INFO L518 ElimStorePlain]: Eliminatee ends_with_2 vanished before elimination [2021-04-15 03:05:28,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:05:28,104 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:28,266 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-04-15 03:05:28,266 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:28,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:05:28,273 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:28,438 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-04-15 03:05:28,438 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:28,438 INFO L518 ElimStorePlain]: Eliminatee v_prenex_503 vanished before elimination [2021-04-15 03:05:28,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:05:28,446 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:28,604 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-04-15 03:05:28,605 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:28,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:05:28,611 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:28,778 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-04-15 03:05:28,779 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:28,779 INFO L518 ElimStorePlain]: Eliminatee v_prenex_528 vanished before elimination [2021-04-15 03:05:28,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:05:28,785 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:28,936 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-04-15 03:05:28,936 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:28,936 INFO L518 ElimStorePlain]: Eliminatee v_prenex_527 vanished before elimination [2021-04-15 03:05:28,937 INFO L518 ElimStorePlain]: Eliminatee v_prenex_508 vanished before elimination [2021-04-15 03:05:28,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:05:28,942 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:29,095 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-04-15 03:05:29,095 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:29,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:05:29,100 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:29,247 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-04-15 03:05:29,247 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:29,247 INFO L518 ElimStorePlain]: Eliminatee v_prenex_509 vanished before elimination [2021-04-15 03:05:29,247 INFO L518 ElimStorePlain]: Eliminatee v_prenex_496 vanished before elimination [2021-04-15 03:05:29,247 INFO L518 ElimStorePlain]: Eliminatee v_prenex_498 vanished before elimination [2021-04-15 03:05:29,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:05:29,253 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:29,394 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-04-15 03:05:29,395 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:29,395 INFO L518 ElimStorePlain]: Eliminatee v_prenex_497 vanished before elimination [2021-04-15 03:05:29,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:05:29,400 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:29,541 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-04-15 03:05:29,542 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:29,542 INFO L518 ElimStorePlain]: Eliminatee v_prenex_511 vanished before elimination [2021-04-15 03:05:29,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:05:29,548 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:29,692 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-15 03:05:29,692 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:29,693 INFO L518 ElimStorePlain]: Eliminatee v_prenex_510 vanished before elimination [2021-04-15 03:05:29,693 INFO L518 ElimStorePlain]: Eliminatee v_prenex_499 vanished before elimination [2021-04-15 03:05:29,693 INFO L518 ElimStorePlain]: Eliminatee v_prenex_535 vanished before elimination [2021-04-15 03:05:29,693 INFO L518 ElimStorePlain]: Eliminatee v_prenex_513 vanished before elimination [2021-04-15 03:05:29,693 INFO L518 ElimStorePlain]: Eliminatee v_prenex_534 vanished before elimination [2021-04-15 03:05:29,693 INFO L518 ElimStorePlain]: Eliminatee v_prenex_512 vanished before elimination [2021-04-15 03:05:29,695 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 48 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-04-15 03:05:29,695 INFO L247 ElimStorePlain]: Needed 18 recursive calls to eliminate 54 variables, input treesize:1529, output treesize:227 [2021-04-15 03:05:29,855 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-15 03:05:30,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:30,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:05:30,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:05:30,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035588932] [2021-04-15 03:05:30,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:05:30,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:05:30,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:05:30,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:05:30,153 INFO L87 Difference]: Start difference. First operand 785 states and 2711 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:30,781 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2021-04-15 03:05:31,195 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2021-04-15 03:05:31,604 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2021-04-15 03:05:31,959 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-04-15 03:05:32,329 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 49 [2021-04-15 03:05:32,668 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 56 [2021-04-15 03:05:32,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:05:32,882 INFO L93 Difference]: Finished difference Result 1233 states and 3921 transitions. [2021-04-15 03:05:32,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-04-15 03:05:32,883 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:05:32,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:05:32,885 INFO L225 Difference]: With dead ends: 1233 [2021-04-15 03:05:32,885 INFO L226 Difference]: Without dead ends: 1128 [2021-04-15 03:05:32,885 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 3419.9ms TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2021-04-15 03:05:32,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2021-04-15 03:05:32,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 791. [2021-04-15 03:05:32,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 790 states have (on average 3.473417721518987) internal successors, (2744), 790 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:32,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 2744 transitions. [2021-04-15 03:05:32,899 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 2744 transitions. Word has length 20 [2021-04-15 03:05:32,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:05:32,899 INFO L480 AbstractCegarLoop]: Abstraction has 791 states and 2744 transitions. [2021-04-15 03:05:32,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:32,899 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 2744 transitions. [2021-04-15 03:05:32,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:05:32,901 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:05:32,901 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:05:33,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7681 [2021-04-15 03:05:33,122 INFO L428 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:05:33,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:05:33,122 INFO L82 PathProgramCache]: Analyzing trace with hash 143717076, now seen corresponding path program 53 times [2021-04-15 03:05:33,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:05:33,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123414366] [2021-04-15 03:05:33,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:05:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:05:33,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:33,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123414366] [2021-04-15 03:05:33,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003183050] [2021-04-15 03:05:33,381 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:05:33,421 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:05:33,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:05:33,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:05:33,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:05:33,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:33,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:05:33,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-04-15 03:05:33,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597892378] [2021-04-15 03:05:33,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-15 03:05:33,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:05:33,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-15 03:05:33,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-04-15 03:05:33,986 INFO L87 Difference]: Start difference. First operand 791 states and 2744 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:34,241 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2021-04-15 03:05:34,468 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2021-04-15 03:05:34,832 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2021-04-15 03:05:35,066 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-04-15 03:05:35,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:05:35,271 INFO L93 Difference]: Finished difference Result 1005 states and 3375 transitions. [2021-04-15 03:05:35,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-04-15 03:05:35,271 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:05:35,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:05:35,274 INFO L225 Difference]: With dead ends: 1005 [2021-04-15 03:05:35,274 INFO L226 Difference]: Without dead ends: 990 [2021-04-15 03:05:35,274 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1579.4ms TimeCoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2021-04-15 03:05:35,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2021-04-15 03:05:35,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 791. [2021-04-15 03:05:35,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 790 states have (on average 3.473417721518987) internal successors, (2744), 790 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:35,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 2744 transitions. [2021-04-15 03:05:35,286 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 2744 transitions. Word has length 20 [2021-04-15 03:05:35,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:05:35,286 INFO L480 AbstractCegarLoop]: Abstraction has 791 states and 2744 transitions. [2021-04-15 03:05:35,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:35,286 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 2744 transitions. [2021-04-15 03:05:35,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:05:35,287 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:05:35,287 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:05:35,487 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7892,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:05:35,488 INFO L428 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:05:35,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:05:35,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1177710784, now seen corresponding path program 54 times [2021-04-15 03:05:35,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:05:35,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537361491] [2021-04-15 03:05:35,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:05:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:05:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:35,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537361491] [2021-04-15 03:05:35,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651765627] [2021-04-15 03:05:35,763 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:05:35,815 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-04-15 03:05:35,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:05:35,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:05:35,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:05:36,326 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-04-15 03:05:36,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:36,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:05:36,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:05:36,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421190705] [2021-04-15 03:05:36,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:05:36,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:05:36,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:05:36,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:05:36,545 INFO L87 Difference]: Start difference. First operand 791 states and 2744 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:37,003 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2021-04-15 03:05:37,382 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2021-04-15 03:05:37,554 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2021-04-15 03:05:37,791 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2021-04-15 03:05:38,250 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2021-04-15 03:05:38,385 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2021-04-15 03:05:38,684 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2021-04-15 03:05:38,811 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2021-04-15 03:05:38,963 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2021-04-15 03:05:39,456 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 51 [2021-04-15 03:05:39,680 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2021-04-15 03:05:40,072 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2021-04-15 03:05:40,207 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2021-04-15 03:05:40,580 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2021-04-15 03:05:40,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:05:40,600 INFO L93 Difference]: Finished difference Result 2092 states and 6661 transitions. [2021-04-15 03:05:40,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-04-15 03:05:40,600 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:05:40,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:05:40,603 INFO L225 Difference]: With dead ends: 2092 [2021-04-15 03:05:40,603 INFO L226 Difference]: Without dead ends: 1972 [2021-04-15 03:05:40,604 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 4322.5ms TimeCoverageRelationStatistics Valid=368, Invalid=1354, Unknown=0, NotChecked=0, Total=1722 [2021-04-15 03:05:40,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2021-04-15 03:05:40,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 840. [2021-04-15 03:05:40,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 839 states have (on average 3.542312276519666) internal successors, (2972), 839 states have internal predecessors, (2972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:40,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 2972 transitions. [2021-04-15 03:05:40,619 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 2972 transitions. Word has length 20 [2021-04-15 03:05:40,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:05:40,619 INFO L480 AbstractCegarLoop]: Abstraction has 840 states and 2972 transitions. [2021-04-15 03:05:40,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:40,619 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 2972 transitions. [2021-04-15 03:05:40,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:05:40,620 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:05:40,620 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:05:40,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7911 [2021-04-15 03:05:40,821 INFO L428 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:05:40,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:05:40,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1605237068, now seen corresponding path program 55 times [2021-04-15 03:05:40,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:05:40,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234199067] [2021-04-15 03:05:40,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:05:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:05:41,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:41,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234199067] [2021-04-15 03:05:41,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425079653] [2021-04-15 03:05:41,068 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:05:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:05:41,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:05:41,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:05:41,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:41,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:05:41,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:05:41,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774801284] [2021-04-15 03:05:41,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:05:41,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:05:41,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:05:41,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:05:41,638 INFO L87 Difference]: Start difference. First operand 840 states and 2972 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:42,224 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2021-04-15 03:05:42,427 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2021-04-15 03:05:42,713 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2021-04-15 03:05:43,216 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2021-04-15 03:05:43,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:05:43,240 INFO L93 Difference]: Finished difference Result 1237 states and 4134 transitions. [2021-04-15 03:05:43,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-04-15 03:05:43,241 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:05:43,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:05:43,243 INFO L225 Difference]: With dead ends: 1237 [2021-04-15 03:05:43,243 INFO L226 Difference]: Without dead ends: 1207 [2021-04-15 03:05:43,243 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1775.7ms TimeCoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2021-04-15 03:05:43,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2021-04-15 03:05:43,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 837. [2021-04-15 03:05:43,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 836 states have (on average 3.541866028708134) internal successors, (2961), 836 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:43,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 2961 transitions. [2021-04-15 03:05:43,260 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 2961 transitions. Word has length 20 [2021-04-15 03:05:43,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:05:43,260 INFO L480 AbstractCegarLoop]: Abstraction has 837 states and 2961 transitions. [2021-04-15 03:05:43,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:43,260 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 2961 transitions. [2021-04-15 03:05:43,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:05:43,262 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:05:43,262 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:05:43,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7928,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:05:43,483 INFO L428 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:05:43,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:05:43,483 INFO L82 PathProgramCache]: Analyzing trace with hash 568028312, now seen corresponding path program 56 times [2021-04-15 03:05:43,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:05:43,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289254208] [2021-04-15 03:05:43,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:05:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:05:43,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:43,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289254208] [2021-04-15 03:05:43,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131752089] [2021-04-15 03:05:43,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:05:43,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:05:43,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:05:43,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 37 conjunts are in the unsatisfiable core [2021-04-15 03:05:43,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:05:44,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:44,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:05:44,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:05:44,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674463840] [2021-04-15 03:05:44,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:05:44,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:05:44,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:05:44,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:05:44,287 INFO L87 Difference]: Start difference. First operand 837 states and 2961 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:44,698 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2021-04-15 03:05:44,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:05:44,756 INFO L93 Difference]: Finished difference Result 995 states and 3409 transitions. [2021-04-15 03:05:44,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-15 03:05:44,756 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:05:44,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:05:44,758 INFO L225 Difference]: With dead ends: 995 [2021-04-15 03:05:44,758 INFO L226 Difference]: Without dead ends: 980 [2021-04-15 03:05:44,758 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 870.6ms TimeCoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2021-04-15 03:05:44,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2021-04-15 03:05:44,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 834. [2021-04-15 03:05:44,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 833 states have (on average 3.545018007202881) internal successors, (2953), 833 states have internal predecessors, (2953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:44,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 2953 transitions. [2021-04-15 03:05:44,768 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 2953 transitions. Word has length 20 [2021-04-15 03:05:44,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:05:44,768 INFO L480 AbstractCegarLoop]: Abstraction has 834 states and 2953 transitions. [2021-04-15 03:05:44,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:44,768 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 2953 transitions. [2021-04-15 03:05:44,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:05:44,769 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:05:44,769 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:05:44,970 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7943,61 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:05:44,970 INFO L428 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:05:44,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:05:44,970 INFO L82 PathProgramCache]: Analyzing trace with hash 79225828, now seen corresponding path program 57 times [2021-04-15 03:05:44,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:05:44,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990047959] [2021-04-15 03:05:44,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:05:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:05:45,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:45,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990047959] [2021-04-15 03:05:45,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789036391] [2021-04-15 03:05:45,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:05:45,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-04-15 03:05:45,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:05:45,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:05:45,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:05:45,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:05:45,553 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:45,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:05:45,559 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:45,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:05:45,566 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:45,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:45,573 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:45,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:05:45,582 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:45,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:45,588 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:45,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:05:45,595 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:45,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:05:45,601 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:45,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:05:45,608 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:45,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:05:45,615 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:45,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:45,623 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:45,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:05:45,629 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:45,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:05:45,635 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:45,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:05:45,642 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:45,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:45,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:05:45,647 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:45,756 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-04-15 03:05:45,757 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:45,760 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 7 xjuncts. [2021-04-15 03:05:45,760 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:522, output treesize:191 [2021-04-15 03:05:45,964 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-04-15 03:05:46,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:46,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:05:46,923 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:47,078 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2021-04-15 03:05:47,079 INFO L628 ElimStorePlain]: treesize reduction 129, result has 43.9 percent of original size [2021-04-15 03:05:47,079 INFO L518 ElimStorePlain]: Eliminatee v_prenex_550 vanished before elimination [2021-04-15 03:05:47,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:05:47,083 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:47,137 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:47,138 INFO L518 ElimStorePlain]: Eliminatee v_prenex_548 vanished before elimination [2021-04-15 03:05:47,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:05:47,142 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:47,195 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:47,196 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-04-15 03:05:47,196 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:240, output treesize:90 [2021-04-15 03:05:47,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:47,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:05:47,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:05:47,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260865862] [2021-04-15 03:05:47,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:05:47,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:05:47,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:05:47,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:05:47,340 INFO L87 Difference]: Start difference. First operand 834 states and 2953 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:47,956 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2021-04-15 03:05:48,196 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2021-04-15 03:05:48,720 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 82 [2021-04-15 03:05:48,877 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2021-04-15 03:05:49,207 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2021-04-15 03:05:49,385 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 55 [2021-04-15 03:05:49,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:05:49,594 INFO L93 Difference]: Finished difference Result 1457 states and 4659 transitions. [2021-04-15 03:05:49,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-04-15 03:05:49,595 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:05:49,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:05:49,597 INFO L225 Difference]: With dead ends: 1457 [2021-04-15 03:05:49,597 INFO L226 Difference]: Without dead ends: 1364 [2021-04-15 03:05:49,597 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 2608.3ms TimeCoverageRelationStatistics Valid=172, Invalid=820, Unknown=0, NotChecked=0, Total=992 [2021-04-15 03:05:49,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2021-04-15 03:05:49,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 939. [2021-04-15 03:05:49,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 938 states have (on average 3.593816631130064) internal successors, (3371), 938 states have internal predecessors, (3371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:49,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 3371 transitions. [2021-04-15 03:05:49,610 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 3371 transitions. Word has length 20 [2021-04-15 03:05:49,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:05:49,610 INFO L480 AbstractCegarLoop]: Abstraction has 939 states and 3371 transitions. [2021-04-15 03:05:49,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:49,610 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 3371 transitions. [2021-04-15 03:05:49,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:05:49,611 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:05:49,611 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:05:49,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7964,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:05:49,812 INFO L428 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:05:49,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:05:49,812 INFO L82 PathProgramCache]: Analyzing trace with hash -200334708, now seen corresponding path program 58 times [2021-04-15 03:05:49,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:05:49,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817922242] [2021-04-15 03:05:49,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:05:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:05:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:50,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817922242] [2021-04-15 03:05:50,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886051] [2021-04-15 03:05:50,115 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:05:50,169 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 03:05:50,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:05:50,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:05:50,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:05:50,474 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2021-04-15 03:05:50,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:50,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:50,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:50,763 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:50,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:50,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:50,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:05:50,772 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:50,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:50,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:50,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:50,781 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:50,787 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:50,788 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:50,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:05:50,790 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:50,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:50,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:05:50,798 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:51,317 WARN L205 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2021-04-15 03:05:51,317 INFO L628 ElimStorePlain]: treesize reduction 483, result has 42.4 percent of original size [2021-04-15 03:05:51,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:05:51,323 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:51,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:05:51,329 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:51,543 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-04-15 03:05:51,543 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:51,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:05:51,549 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:51,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:05:51,554 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:51,768 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-04-15 03:05:51,769 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:51,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:05:51,775 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:51,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:05:51,781 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:51,991 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-15 03:05:51,991 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:51,995 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-1 vars, End of recursive call: 4 dim-0 vars, and 8 xjuncts. [2021-04-15 03:05:51,995 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 6 variables, input treesize:989, output treesize:329 [2021-04-15 03:05:52,214 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-04-15 03:05:52,391 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-04-15 03:05:54,020 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_577, v_prenex_567], 3=[v_prenex_562, v_prenex_572, v_prenex_564, v_prenex_563, v_prenex_566, v_prenex_565, ends_with_10], 15=[v_prenex_561, v_prenex_568, ends_with_6, v_prenex_581], 21=[v_prenex_573]} [2021-04-15 03:05:54,033 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:54,034 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:54,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:54,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:54,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:05:54,048 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:54,060 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:54,061 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:54,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:54,075 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:54,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:05:54,076 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:54,089 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:05:54,090 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:54,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:05:54,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:05:54,103 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:54,765 WARN L205 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 127 [2021-04-15 03:05:54,765 INFO L628 ElimStorePlain]: treesize reduction 1257, result has 23.8 percent of original size [2021-04-15 03:05:54,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:05:54,775 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:54,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:05:54,783 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:55,002 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-04-15 03:05:55,002 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:55,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:05:55,011 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:55,228 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-04-15 03:05:55,228 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:55,228 INFO L518 ElimStorePlain]: Eliminatee v_prenex_572 vanished before elimination [2021-04-15 03:05:55,228 INFO L518 ElimStorePlain]: Eliminatee v_prenex_564 vanished before elimination [2021-04-15 03:05:55,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:05:55,237 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:55,451 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-04-15 03:05:55,451 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:55,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:05:55,459 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:55,666 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-04-15 03:05:55,666 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:55,666 INFO L518 ElimStorePlain]: Eliminatee v_prenex_565 vanished before elimination [2021-04-15 03:05:55,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:05:55,674 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:55,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:05:55,682 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:55,885 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-04-15 03:05:55,885 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:55,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:05:55,893 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:56,091 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-04-15 03:05:56,092 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:56,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:05:56,099 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:56,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:05:56,107 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:56,488 WARN L205 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 106 [2021-04-15 03:05:56,488 INFO L628 ElimStorePlain]: treesize reduction 40, result has 88.7 percent of original size [2021-04-15 03:05:56,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:05:56,495 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:56,655 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-04-15 03:05:56,656 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:56,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:05:56,661 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:56,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:05:56,667 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:56,823 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-04-15 03:05:56,823 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:56,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:05:56,830 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:56,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:05:56,837 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:05:56,989 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-04-15 03:05:56,990 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:05:56,993 INFO L550 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 14 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-04-15 03:05:56,994 INFO L247 ElimStorePlain]: Needed 22 recursive calls to eliminate 30 variables, input treesize:1881, output treesize:190 [2021-04-15 03:05:57,193 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2021-04-15 03:05:57,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:57,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:05:57,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:05:57,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772129407] [2021-04-15 03:05:57,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:05:57,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:05:57,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:05:57,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:05:57,368 INFO L87 Difference]: Start difference. First operand 939 states and 3371 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:57,982 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 85 [2021-04-15 03:05:58,547 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2021-04-15 03:05:58,813 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2021-04-15 03:05:59,054 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2021-04-15 03:05:59,311 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2021-04-15 03:05:59,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:05:59,329 INFO L93 Difference]: Finished difference Result 1207 states and 4146 transitions. [2021-04-15 03:05:59,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-04-15 03:05:59,329 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:05:59,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:05:59,331 INFO L225 Difference]: With dead ends: 1207 [2021-04-15 03:05:59,331 INFO L226 Difference]: Without dead ends: 1162 [2021-04-15 03:05:59,331 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 2602.6ms TimeCoverageRelationStatistics Valid=173, Invalid=697, Unknown=0, NotChecked=0, Total=870 [2021-04-15 03:05:59,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2021-04-15 03:05:59,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 939. [2021-04-15 03:05:59,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 938 states have (on average 3.593816631130064) internal successors, (3371), 938 states have internal predecessors, (3371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:59,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 3371 transitions. [2021-04-15 03:05:59,342 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 3371 transitions. Word has length 20 [2021-04-15 03:05:59,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:05:59,342 INFO L480 AbstractCegarLoop]: Abstraction has 939 states and 3371 transitions. [2021-04-15 03:05:59,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:05:59,342 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 3371 transitions. [2021-04-15 03:05:59,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:05:59,344 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:05:59,344 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:05:59,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8166 [2021-04-15 03:05:59,549 INFO L428 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:05:59,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:05:59,549 INFO L82 PathProgramCache]: Analyzing trace with hash 984747272, now seen corresponding path program 59 times [2021-04-15 03:05:59,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:05:59,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487803764] [2021-04-15 03:05:59,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:05:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:05:59,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:05:59,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487803764] [2021-04-15 03:05:59,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222521423] [2021-04-15 03:05:59,861 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:05:59,915 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-04-15 03:05:59,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:05:59,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:05:59,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:06:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:06:00,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:06:00,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-04-15 03:06:00,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815245317] [2021-04-15 03:06:00,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-15 03:06:00,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:06:00,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-15 03:06:00,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-04-15 03:06:00,542 INFO L87 Difference]: Start difference. First operand 939 states and 3371 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:06:01,134 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2021-04-15 03:06:01,495 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-04-15 03:06:01,786 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2021-04-15 03:06:02,001 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2021-04-15 03:06:02,229 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 35 [2021-04-15 03:06:02,413 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2021-04-15 03:06:02,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:06:02,435 INFO L93 Difference]: Finished difference Result 1327 states and 4459 transitions. [2021-04-15 03:06:02,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-04-15 03:06:02,435 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:06:02,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:06:02,437 INFO L225 Difference]: With dead ends: 1327 [2021-04-15 03:06:02,437 INFO L226 Difference]: Without dead ends: 1252 [2021-04-15 03:06:02,438 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 2084.3ms TimeCoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2021-04-15 03:06:02,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-04-15 03:06:02,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 920. [2021-04-15 03:06:02,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 919 states have (on average 3.5832426550598475) internal successors, (3293), 919 states have internal predecessors, (3293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:06:02,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 3293 transitions. [2021-04-15 03:06:02,450 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 3293 transitions. Word has length 20 [2021-04-15 03:06:02,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:06:02,450 INFO L480 AbstractCegarLoop]: Abstraction has 920 states and 3293 transitions. [2021-04-15 03:06:02,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:06:02,450 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 3293 transitions. [2021-04-15 03:06:02,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:06:02,452 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:06:02,452 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:06:02,652 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8390,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:06:02,652 INFO L428 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:06:02,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:06:02,652 INFO L82 PathProgramCache]: Analyzing trace with hash 136124800, now seen corresponding path program 60 times [2021-04-15 03:06:02,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:06:02,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456414533] [2021-04-15 03:06:02,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:06:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:06:02,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:06:02,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456414533] [2021-04-15 03:06:02,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656064864] [2021-04-15 03:06:02,922 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:06:02,966 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-04-15 03:06:02,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:06:02,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:06:02,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:06:03,186 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-04-15 03:06:03,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:03,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:03,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2021-04-15 03:06:03,567 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:03,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:03,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:03,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:06:03,577 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:03,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:03,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:03,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2021-04-15 03:06:03,587 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:03,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:03,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:06:03,597 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:04,079 WARN L205 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 103 [2021-04-15 03:06:04,080 INFO L628 ElimStorePlain]: treesize reduction 328, result has 52.1 percent of original size [2021-04-15 03:06:04,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:04,087 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:04,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:04,094 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:04,298 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-04-15 03:06:04,299 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:04,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:04,306 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:04,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:04,313 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:04,512 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-04-15 03:06:04,512 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:04,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:04,520 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:04,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:04,527 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:04,735 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-04-15 03:06:04,735 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:04,746 INFO L550 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 4 dim-1 vars, End of recursive call: 8 dim-0 vars, and 8 xjuncts. [2021-04-15 03:06:04,746 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 13 variables, input treesize:809, output treesize:333 [2021-04-15 03:06:04,958 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-04-15 03:06:06,938 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:06:06,940 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:06,952 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:06:06,953 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:06,965 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:06,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:06,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:06:06,968 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:06,980 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:06:06,981 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:06,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:06,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:06:06,994 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:07,804 WARN L205 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 147 [2021-04-15 03:06:07,804 INFO L628 ElimStorePlain]: treesize reduction 1503, result has 23.3 percent of original size [2021-04-15 03:06:07,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:06:07,813 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:08,064 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2021-04-15 03:06:08,064 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:08,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:08,073 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:08,317 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2021-04-15 03:06:08,317 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:08,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:08,326 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:08,569 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2021-04-15 03:06:08,569 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:08,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:08,578 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:08,819 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2021-04-15 03:06:08,819 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:08,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:08,828 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:09,063 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-04-15 03:06:09,063 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:09,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:09,072 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:09,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:09,079 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:09,308 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2021-04-15 03:06:09,308 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:09,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:06:09,316 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:09,547 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-04-15 03:06:09,547 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:09,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:09,556 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:09,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:09,565 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:09,794 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-04-15 03:06:09,794 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:09,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:09,803 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:10,026 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-04-15 03:06:10,026 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:10,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:10,035 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:10,257 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-04-15 03:06:10,257 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:10,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:10,268 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:10,514 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-04-15 03:06:10,515 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:10,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:10,526 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:10,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:10,537 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:10,762 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-04-15 03:06:10,762 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:10,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:10,769 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:10,975 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-04-15 03:06:10,976 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:10,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:06:10,984 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:11,200 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-04-15 03:06:11,200 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:11,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:11,208 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:11,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:11,215 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:11,415 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-04-15 03:06:11,415 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:11,420 INFO L550 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 16 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-04-15 03:06:11,421 INFO L247 ElimStorePlain]: Needed 25 recursive calls to eliminate 25 variables, input treesize:2177, output treesize:283 [2021-04-15 03:06:11,708 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2021-04-15 03:06:11,921 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-04-15 03:06:12,107 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2021-04-15 03:06:12,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:06:12,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:06:12,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-04-15 03:06:12,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946336327] [2021-04-15 03:06:12,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-15 03:06:12,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:06:12,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-15 03:06:12,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-04-15 03:06:12,197 INFO L87 Difference]: Start difference. First operand 920 states and 3293 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:06:13,127 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2021-04-15 03:06:13,469 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 79 [2021-04-15 03:06:13,969 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2021-04-15 03:06:14,373 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2021-04-15 03:06:14,907 WARN L205 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 85 [2021-04-15 03:06:14,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:06:14,922 INFO L93 Difference]: Finished difference Result 1388 states and 4567 transitions. [2021-04-15 03:06:14,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-04-15 03:06:14,922 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:06:14,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:06:14,925 INFO L225 Difference]: With dead ends: 1388 [2021-04-15 03:06:14,925 INFO L226 Difference]: Without dead ends: 1313 [2021-04-15 03:06:14,925 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3572.1ms TimeCoverageRelationStatistics Valid=180, Invalid=522, Unknown=0, NotChecked=0, Total=702 [2021-04-15 03:06:14,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2021-04-15 03:06:14,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 918. [2021-04-15 03:06:14,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 917 states have (on average 3.5856052344601963) internal successors, (3288), 917 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:06:14,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 3288 transitions. [2021-04-15 03:06:14,938 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 3288 transitions. Word has length 20 [2021-04-15 03:06:14,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:06:14,938 INFO L480 AbstractCegarLoop]: Abstraction has 918 states and 3288 transitions. [2021-04-15 03:06:14,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:06:14,938 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 3288 transitions. [2021-04-15 03:06:14,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:06:14,939 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:06:14,940 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:06:15,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8415,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:06:15,144 INFO L428 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:06:15,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:06:15,144 INFO L82 PathProgramCache]: Analyzing trace with hash -821811394, now seen corresponding path program 61 times [2021-04-15 03:06:15,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:06:15,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532364294] [2021-04-15 03:06:15,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:06:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:06:15,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:06:15,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532364294] [2021-04-15 03:06:15,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002697231] [2021-04-15 03:06:15,399 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:06:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:06:15,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:06:15,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:06:15,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:15,834 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:15,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:06:15,842 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:15,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:06:15,850 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:15,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:06:15,858 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:15,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:15,865 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:15,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:06:15,874 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:15,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:06:15,882 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:15,887 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:06:15,890 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:15,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:06:15,903 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:15,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:06:15,911 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:15,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:06:15,919 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:15,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:06:15,927 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:15,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:06:15,934 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:15,940 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:06:15,942 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:15,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:06:15,949 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:15,954 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:06:15,955 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:15,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:15,962 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:15,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:06:15,970 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:15,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:06:15,977 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:15,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:15,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:06:15,983 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:16,371 WARN L205 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-04-15 03:06:16,371 INFO L628 ElimStorePlain]: treesize reduction 72, result has 82.0 percent of original size [2021-04-15 03:06:16,375 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 10 xjuncts. [2021-04-15 03:06:16,376 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 2 variables, input treesize:814, output treesize:328 [2021-04-15 03:06:16,734 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2021-04-15 03:06:18,626 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_615], 1=[v_prenex_624, v_prenex_616, v_prenex_626, v_prenex_618, v_prenex_617, v_prenex_619, v_prenex_630, v_prenex_621, v_prenex_620, v_prenex_631, v_prenex_634, v_prenex_623, v_prenex_622], 3=[ends_with_10], 10=[ends_with_6, v_prenex_636, v_prenex_613, v_prenex_627]} [2021-04-15 03:06:18,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:18,640 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:19,212 WARN L205 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 83 [2021-04-15 03:06:19,212 INFO L628 ElimStorePlain]: treesize reduction 1005, result has 21.5 percent of original size [2021-04-15 03:06:19,212 INFO L518 ElimStorePlain]: Eliminatee v_prenex_624 vanished before elimination [2021-04-15 03:06:19,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:06:19,219 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:19,487 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2021-04-15 03:06:19,488 INFO L628 ElimStorePlain]: treesize reduction 31, result has 88.6 percent of original size [2021-04-15 03:06:19,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:19,494 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:19,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:19,500 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:19,636 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-04-15 03:06:19,637 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:19,637 INFO L518 ElimStorePlain]: Eliminatee v_prenex_618 vanished before elimination [2021-04-15 03:06:19,637 INFO L518 ElimStorePlain]: Eliminatee v_prenex_617 vanished before elimination [2021-04-15 03:06:19,637 INFO L518 ElimStorePlain]: Eliminatee v_prenex_619 vanished before elimination [2021-04-15 03:06:19,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:19,643 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:19,773 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-04-15 03:06:19,774 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:19,774 INFO L518 ElimStorePlain]: Eliminatee v_prenex_621 vanished before elimination [2021-04-15 03:06:19,774 INFO L518 ElimStorePlain]: Eliminatee v_prenex_620 vanished before elimination [2021-04-15 03:06:19,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:19,779 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:19,903 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-04-15 03:06:19,903 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:19,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:19,909 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:20,031 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-04-15 03:06:20,032 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:20,032 INFO L518 ElimStorePlain]: Eliminatee v_prenex_623 vanished before elimination [2021-04-15 03:06:20,032 INFO L518 ElimStorePlain]: Eliminatee v_prenex_622 vanished before elimination [2021-04-15 03:06:20,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:20,038 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:20,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:06:20,044 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:20,161 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-04-15 03:06:20,161 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:20,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:20,167 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:20,281 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-04-15 03:06:20,281 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:20,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:20,287 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:20,400 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-15 03:06:20,401 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:20,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:20,407 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:20,519 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-04-15 03:06:20,519 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:20,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:06:20,525 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:20,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:20,530 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:20,636 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-04-15 03:06:20,637 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:20,640 INFO L550 ElimStorePlain]: Start of recursive call 1: 11 dim-0 vars, 19 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-04-15 03:06:20,640 INFO L247 ElimStorePlain]: Needed 15 recursive calls to eliminate 30 variables, input treesize:1284, output treesize:127 [2021-04-15 03:06:20,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:06:20,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:06:20,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:06:20,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538115859] [2021-04-15 03:06:20,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:06:20,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:06:20,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:06:20,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:06:20,827 INFO L87 Difference]: Start difference. First operand 918 states and 3288 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:06:21,507 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 51 [2021-04-15 03:06:21,747 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2021-04-15 03:06:21,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:06:21,789 INFO L93 Difference]: Finished difference Result 1048 states and 3662 transitions. [2021-04-15 03:06:21,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 03:06:21,790 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:06:21,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:06:21,792 INFO L225 Difference]: With dead ends: 1048 [2021-04-15 03:06:21,792 INFO L226 Difference]: Without dead ends: 1033 [2021-04-15 03:06:21,792 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1453.7ms TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2021-04-15 03:06:21,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2021-04-15 03:06:21,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 918. [2021-04-15 03:06:21,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 917 states have (on average 3.5856052344601963) internal successors, (3288), 917 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:06:21,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 3288 transitions. [2021-04-15 03:06:21,803 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 3288 transitions. Word has length 20 [2021-04-15 03:06:21,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:06:21,803 INFO L480 AbstractCegarLoop]: Abstraction has 918 states and 3288 transitions. [2021-04-15 03:06:21,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:06:21,803 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 3288 transitions. [2021-04-15 03:06:21,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:06:21,804 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:06:21,804 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:06:22,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9044 [2021-04-15 03:06:22,005 INFO L428 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:06:22,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:06:22,005 INFO L82 PathProgramCache]: Analyzing trace with hash -100687916, now seen corresponding path program 62 times [2021-04-15 03:06:22,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:06:22,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145641298] [2021-04-15 03:06:22,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:06:22,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:06:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:06:22,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145641298] [2021-04-15 03:06:22,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571455305] [2021-04-15 03:06:22,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:06:22,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:06:22,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:06:22,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:06:22,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:06:22,657 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2021-04-15 03:06:22,973 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 62 [2021-04-15 03:06:23,797 INFO L446 ElimStorePlain]: Different costs {6=[v_prenex_641, v_prenex_644, v_prenex_647], 10=[ends_with_10]} [2021-04-15 03:06:23,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:23,808 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:23,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:23,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:23,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:06:23,821 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:23,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:23,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:23,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 2 [2021-04-15 03:06:23,834 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:23,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:23,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:06:23,844 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:24,720 WARN L205 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 130 [2021-04-15 03:06:24,721 INFO L628 ElimStorePlain]: treesize reduction 411, result has 61.2 percent of original size [2021-04-15 03:06:24,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:24,729 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:24,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:24,737 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:25,396 WARN L205 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 126 [2021-04-15 03:06:25,396 INFO L628 ElimStorePlain]: treesize reduction 45, result has 93.0 percent of original size [2021-04-15 03:06:25,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:25,404 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:25,707 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-04-15 03:06:25,708 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:25,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:06:25,716 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:25,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:25,725 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:25,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:25,734 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:25,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:25,742 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:25,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:06:25,751 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:25,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:25,760 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:25,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:25,768 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:25,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:25,776 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:26,368 WARN L205 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 116 [2021-04-15 03:06:26,369 INFO L628 ElimStorePlain]: treesize reduction 42, result has 92.4 percent of original size [2021-04-15 03:06:26,387 INFO L550 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 4 dim-1 vars, End of recursive call: 12 dim-0 vars, and 13 xjuncts. [2021-04-15 03:06:26,387 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 13 variables, input treesize:1137, output treesize:514 [2021-04-15 03:06:26,827 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 115 [2021-04-15 03:06:30,449 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_661, v_prenex_660, v_prenex_675, v_prenex_656, v_prenex_655, v_prenex_658, v_prenex_657, v_prenex_659], 15=[v_prenex_662], 21=[v_prenex_672, ends_with_2, v_prenex_665], 28=[ends_with_6]} [2021-04-15 03:06:30,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:30,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:30,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:06:30,466 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:30,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:30,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:06:30,482 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:31,808 WARN L205 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 331 DAG size of output: 163 [2021-04-15 03:06:31,809 INFO L628 ElimStorePlain]: treesize reduction 1832, result has 27.0 percent of original size [2021-04-15 03:06:31,809 INFO L518 ElimStorePlain]: Eliminatee v_prenex_660 vanished before elimination [2021-04-15 03:06:31,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:31,819 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:32,234 WARN L205 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2021-04-15 03:06:32,234 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:32,234 INFO L518 ElimStorePlain]: Eliminatee v_prenex_656 vanished before elimination [2021-04-15 03:06:32,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:32,244 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:32,652 WARN L205 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-04-15 03:06:32,652 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:32,652 INFO L518 ElimStorePlain]: Eliminatee v_prenex_658 vanished before elimination [2021-04-15 03:06:32,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:32,661 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:33,061 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-04-15 03:06:33,061 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:33,061 INFO L518 ElimStorePlain]: Eliminatee v_prenex_659 vanished before elimination [2021-04-15 03:06:33,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:33,071 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:33,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:33,080 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:33,499 WARN L205 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2021-04-15 03:06:33,499 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:33,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:33,510 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:33,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:33,528 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:33,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:06:33,546 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:33,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:33,555 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:34,276 WARN L205 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 147 [2021-04-15 03:06:34,277 INFO L628 ElimStorePlain]: treesize reduction 40, result has 93.8 percent of original size [2021-04-15 03:06:34,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:34,287 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:34,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:34,295 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:34,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:34,304 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:34,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:34,314 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:34,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:34,340 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:34,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:34,351 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:34,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:34,361 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:34,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:34,370 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:34,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:34,379 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:34,707 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-04-15 03:06:34,707 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:34,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:34,716 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:35,046 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2021-04-15 03:06:35,047 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:35,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:06:35,055 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:35,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:35,063 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:35,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:35,071 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:35,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:35,079 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:35,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:35,087 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:35,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:35,095 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:35,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:06:35,102 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:35,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:35,111 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:35,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:35,119 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:35,414 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-04-15 03:06:35,414 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:35,420 INFO L550 ElimStorePlain]: Start of recursive call 1: 25 dim-0 vars, 13 dim-1 vars, End of recursive call: and 13 xjuncts. [2021-04-15 03:06:35,420 INFO L247 ElimStorePlain]: Needed 31 recursive calls to eliminate 38 variables, input treesize:2571, output treesize:344 [2021-04-15 03:06:35,717 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2021-04-15 03:06:35,907 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2021-04-15 03:06:36,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:06:36,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:06:36,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-04-15 03:06:36,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370523376] [2021-04-15 03:06:36,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-15 03:06:36,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:06:36,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-15 03:06:36,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2021-04-15 03:06:36,005 INFO L87 Difference]: Start difference. First operand 918 states and 3288 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:06:36,659 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2021-04-15 03:06:36,952 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2021-04-15 03:06:37,396 WARN L205 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2021-04-15 03:06:37,862 WARN L205 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2021-04-15 03:06:37,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:06:37,902 INFO L93 Difference]: Finished difference Result 1070 states and 3713 transitions. [2021-04-15 03:06:37,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-04-15 03:06:37,903 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:06:37,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:06:37,904 INFO L225 Difference]: With dead ends: 1070 [2021-04-15 03:06:37,904 INFO L226 Difference]: Without dead ends: 1025 [2021-04-15 03:06:37,905 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 3170.2ms TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2021-04-15 03:06:37,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2021-04-15 03:06:37,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 916. [2021-04-15 03:06:37,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 915 states have (on average 3.5879781420765027) internal successors, (3283), 915 states have internal predecessors, (3283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:06:37,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 3283 transitions. [2021-04-15 03:06:37,915 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 3283 transitions. Word has length 20 [2021-04-15 03:06:37,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:06:37,915 INFO L480 AbstractCegarLoop]: Abstraction has 916 states and 3283 transitions. [2021-04-15 03:06:37,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:06:37,916 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 3283 transitions. [2021-04-15 03:06:37,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:06:37,917 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:06:37,917 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:06:38,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9262,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:06:38,117 INFO L428 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:06:38,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:06:38,118 INFO L82 PathProgramCache]: Analyzing trace with hash 206234836, now seen corresponding path program 63 times [2021-04-15 03:06:38,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:06:38,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342737347] [2021-04-15 03:06:38,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:06:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:06:38,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:06:38,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342737347] [2021-04-15 03:06:38,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213821089] [2021-04-15 03:06:38,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:06:38,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-04-15 03:06:38,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:06:38,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:06:38,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:06:38,718 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2021-04-15 03:06:39,497 INFO L446 ElimStorePlain]: Different costs {6=[v_prenex_693, v_prenex_686, v_prenex_689, ends_with_10], 10=[v_prenex_690]} [2021-04-15 03:06:39,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:39,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:39,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:06:39,510 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:39,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:39,522 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:39,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:39,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:39,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:06:39,535 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:39,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:39,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:06:39,547 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:40,562 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 230 DAG size of output: 153 [2021-04-15 03:06:40,562 INFO L628 ElimStorePlain]: treesize reduction 536, result has 57.8 percent of original size [2021-04-15 03:06:40,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:40,572 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:40,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:40,582 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:40,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:40,593 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:41,020 WARN L205 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-04-15 03:06:41,021 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:41,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:41,030 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:41,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:41,037 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:41,780 WARN L205 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 143 [2021-04-15 03:06:41,780 INFO L628 ElimStorePlain]: treesize reduction 110, result has 84.5 percent of original size [2021-04-15 03:06:41,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:41,788 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:42,162 WARN L205 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-04-15 03:06:42,163 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:42,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:06:42,172 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:42,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:42,181 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:42,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:42,191 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:42,560 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2021-04-15 03:06:42,560 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:42,582 INFO L550 ElimStorePlain]: Start of recursive call 1: 11 dim-0 vars, 5 dim-1 vars, End of recursive call: 13 dim-0 vars, and 12 xjuncts. [2021-04-15 03:06:42,583 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 16 variables, input treesize:1347, output treesize:587 [2021-04-15 03:06:43,069 WARN L205 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 140 [2021-04-15 03:06:45,857 INFO L446 ElimStorePlain]: Different costs {15=[v_prenex_703], 21=[v_prenex_704], 28=[ends_with_2], 36=[ends_with_6]} [2021-04-15 03:06:45,871 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:06:45,872 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:45,885 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:06:45,886 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:45,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:45,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:45,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:06:45,902 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:45,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:45,918 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:45,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:45,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:45,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:06:45,933 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:45,945 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:06:45,946 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:45,958 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:06:45,959 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:45,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:45,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:06:45,972 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:47,089 WARN L205 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 227 DAG size of output: 168 [2021-04-15 03:06:47,090 INFO L628 ElimStorePlain]: treesize reduction 1444, result has 32.9 percent of original size [2021-04-15 03:06:47,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:47,100 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:47,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:47,109 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:47,526 WARN L205 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2021-04-15 03:06:47,526 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:47,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:47,535 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:47,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:06:47,544 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:47,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:47,553 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:47,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:47,564 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:47,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:47,575 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:47,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:47,585 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:47,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:47,595 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:47,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:47,606 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:47,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:47,617 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:47,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:47,627 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:47,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:47,637 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:48,379 WARN L205 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 148 [2021-04-15 03:06:48,380 INFO L628 ElimStorePlain]: treesize reduction 53, result has 91.8 percent of original size [2021-04-15 03:06:48,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:48,391 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:48,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:48,401 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:48,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:48,411 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:48,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:06:48,422 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:48,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:48,432 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:48,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:48,443 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:48,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:48,454 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:48,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:48,465 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:48,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:48,476 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:48,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:06:48,487 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:48,820 WARN L205 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2021-04-15 03:06:48,821 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:48,826 INFO L550 ElimStorePlain]: Start of recursive call 1: 17 dim-0 vars, 4 dim-1 vars, End of recursive call: and 12 xjuncts. [2021-04-15 03:06:48,826 INFO L247 ElimStorePlain]: Needed 32 recursive calls to eliminate 21 variables, input treesize:2532, output treesize:453 [2021-04-15 03:06:49,209 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 68 [2021-04-15 03:06:49,397 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-04-15 03:06:49,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:06:49,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:06:49,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-04-15 03:06:49,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916252005] [2021-04-15 03:06:49,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-15 03:06:49,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:06:49,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-15 03:06:49,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2021-04-15 03:06:49,684 INFO L87 Difference]: Start difference. First operand 916 states and 3283 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:06:50,296 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-15 03:06:50,519 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2021-04-15 03:06:51,206 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-04-15 03:06:51,550 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2021-04-15 03:06:51,982 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2021-04-15 03:06:52,433 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2021-04-15 03:06:52,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:06:52,494 INFO L93 Difference]: Finished difference Result 1257 states and 4267 transitions. [2021-04-15 03:06:52,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-04-15 03:06:52,494 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:06:52,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:06:52,496 INFO L225 Difference]: With dead ends: 1257 [2021-04-15 03:06:52,496 INFO L226 Difference]: Without dead ends: 1212 [2021-04-15 03:06:52,497 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 3759.8ms TimeCoverageRelationStatistics Valid=204, Invalid=608, Unknown=0, NotChecked=0, Total=812 [2021-04-15 03:06:52,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2021-04-15 03:06:52,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 916. [2021-04-15 03:06:52,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 915 states have (on average 3.5879781420765027) internal successors, (3283), 915 states have internal predecessors, (3283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:06:52,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 3283 transitions. [2021-04-15 03:06:52,510 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 3283 transitions. Word has length 20 [2021-04-15 03:06:52,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:06:52,510 INFO L480 AbstractCegarLoop]: Abstraction has 916 states and 3283 transitions. [2021-04-15 03:06:52,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:06:52,510 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 3283 transitions. [2021-04-15 03:06:52,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:06:52,511 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:06:52,511 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:06:52,711 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9684,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:06:52,712 INFO L428 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:06:52,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:06:52,712 INFO L82 PathProgramCache]: Analyzing trace with hash 623244032, now seen corresponding path program 64 times [2021-04-15 03:06:52,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:06:52,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411718497] [2021-04-15 03:06:52,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:06:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:06:52,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:06:52,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411718497] [2021-04-15 03:06:52,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825391001] [2021-04-15 03:06:52,973 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:06:53,015 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 03:06:53,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:06:53,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:06:53,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:06:53,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:06:53,198 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:53,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:53,205 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:53,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:53,212 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:53,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:06:53,219 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:53,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:53,225 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:53,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:53,232 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:53,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:53,238 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:53,243 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:06:53,244 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:53,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:53,250 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:53,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:06:53,256 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:53,484 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-04-15 03:06:53,484 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:53,488 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 9 xjuncts. [2021-04-15 03:06:53,489 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 2 variables, input treesize:458, output treesize:361 [2021-04-15 03:06:53,917 WARN L205 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2021-04-15 03:06:55,278 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:06:55,279 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:55,290 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:06:55,291 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:55,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:55,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:06:55,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:06:55,305 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:55,317 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:06:55,318 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:55,962 WARN L205 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 112 [2021-04-15 03:06:55,962 INFO L628 ElimStorePlain]: treesize reduction 1470, result has 17.6 percent of original size [2021-04-15 03:06:55,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:55,970 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:56,161 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-04-15 03:06:56,162 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:56,162 INFO L518 ElimStorePlain]: Eliminatee v_prenex_713 vanished before elimination [2021-04-15 03:06:56,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:56,170 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:56,382 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-04-15 03:06:56,383 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:56,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:56,390 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:56,579 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-04-15 03:06:56,580 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:56,580 INFO L518 ElimStorePlain]: Eliminatee v_prenex_715 vanished before elimination [2021-04-15 03:06:56,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:56,587 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:56,783 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-04-15 03:06:56,783 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:56,783 INFO L518 ElimStorePlain]: Eliminatee v_prenex_714 vanished before elimination [2021-04-15 03:06:56,783 INFO L518 ElimStorePlain]: Eliminatee v_prenex_739 vanished before elimination [2021-04-15 03:06:56,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:56,791 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:56,976 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-04-15 03:06:56,977 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:56,977 INFO L518 ElimStorePlain]: Eliminatee v_prenex_738 vanished before elimination [2021-04-15 03:06:56,977 INFO L518 ElimStorePlain]: Eliminatee v_prenex_716 vanished before elimination [2021-04-15 03:06:56,977 INFO L518 ElimStorePlain]: Eliminatee v_prenex_719 vanished before elimination [2021-04-15 03:06:56,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:56,984 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:57,171 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-04-15 03:06:57,171 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:57,171 INFO L518 ElimStorePlain]: Eliminatee v_prenex_742 vanished before elimination [2021-04-15 03:06:57,171 INFO L518 ElimStorePlain]: Eliminatee v_prenex_720 vanished before elimination [2021-04-15 03:06:57,171 INFO L518 ElimStorePlain]: Eliminatee v_prenex_741 vanished before elimination [2021-04-15 03:06:57,171 INFO L518 ElimStorePlain]: Eliminatee v_prenex_722 vanished before elimination [2021-04-15 03:06:57,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:06:57,178 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:57,363 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-04-15 03:06:57,363 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:57,363 INFO L518 ElimStorePlain]: Eliminatee v_prenex_721 vanished before elimination [2021-04-15 03:06:57,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:06:57,370 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:57,551 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-04-15 03:06:57,552 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:57,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:06:57,558 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:57,734 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-04-15 03:06:57,734 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:57,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:57,741 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:57,913 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-04-15 03:06:57,914 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:57,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:06:57,921 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:58,097 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-04-15 03:06:58,097 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:58,097 INFO L518 ElimStorePlain]: Eliminatee v_prenex_726 vanished before elimination [2021-04-15 03:06:58,097 INFO L518 ElimStorePlain]: Eliminatee v_prenex_725 vanished before elimination [2021-04-15 03:06:58,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:58,104 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:58,277 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-04-15 03:06:58,277 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:58,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:58,285 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:58,452 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-04-15 03:06:58,453 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:58,453 INFO L518 ElimStorePlain]: Eliminatee v_prenex_729 vanished before elimination [2021-04-15 03:06:58,453 INFO L518 ElimStorePlain]: Eliminatee v_prenex_730 vanished before elimination [2021-04-15 03:06:58,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:06:58,460 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:58,623 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-04-15 03:06:58,624 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:58,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:06:58,630 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:06:58,798 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-15 03:06:58,798 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:06:58,801 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 32 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-04-15 03:06:58,801 INFO L247 ElimStorePlain]: Needed 20 recursive calls to eliminate 36 variables, input treesize:1947, output treesize:227 [2021-04-15 03:06:58,976 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-15 03:06:59,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:06:59,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:06:59,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-04-15 03:06:59,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19362676] [2021-04-15 03:06:59,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-15 03:06:59,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:06:59,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-15 03:06:59,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-04-15 03:06:59,300 INFO L87 Difference]: Start difference. First operand 916 states and 3283 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:06:59,792 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2021-04-15 03:07:00,078 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2021-04-15 03:07:00,511 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2021-04-15 03:07:00,655 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2021-04-15 03:07:01,014 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2021-04-15 03:07:01,312 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2021-04-15 03:07:01,760 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2021-04-15 03:07:02,240 WARN L205 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2021-04-15 03:07:02,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:07:02,293 INFO L93 Difference]: Finished difference Result 1360 states and 4518 transitions. [2021-04-15 03:07:02,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-04-15 03:07:02,293 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:07:02,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:07:02,295 INFO L225 Difference]: With dead ends: 1360 [2021-04-15 03:07:02,295 INFO L226 Difference]: Without dead ends: 1255 [2021-04-15 03:07:02,296 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 3503.3ms TimeCoverageRelationStatistics Valid=169, Invalid=533, Unknown=0, NotChecked=0, Total=702 [2021-04-15 03:07:02,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2021-04-15 03:07:02,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 926. [2021-04-15 03:07:02,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 3.5870270270270272) internal successors, (3318), 925 states have internal predecessors, (3318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:07:02,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 3318 transitions. [2021-04-15 03:07:02,308 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 3318 transitions. Word has length 20 [2021-04-15 03:07:02,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:07:02,308 INFO L480 AbstractCegarLoop]: Abstraction has 926 states and 3318 transitions. [2021-04-15 03:07:02,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:07:02,309 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 3318 transitions. [2021-04-15 03:07:02,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:07:02,310 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:07:02,310 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:07:02,510 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10244 [2021-04-15 03:07:02,510 INFO L428 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:07:02,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:07:02,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1066698872, now seen corresponding path program 65 times [2021-04-15 03:07:02,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:07:02,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644947849] [2021-04-15 03:07:02,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:07:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:07:02,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:07:02,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644947849] [2021-04-15 03:07:02,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218322405] [2021-04-15 03:07:02,822 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:07:02,865 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-04-15 03:07:02,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:07:02,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:07:02,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:07:03,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:07:03,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:07:03,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-04-15 03:07:03,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673806276] [2021-04-15 03:07:03,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-15 03:07:03,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:07:03,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-15 03:07:03,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-04-15 03:07:03,479 INFO L87 Difference]: Start difference. First operand 926 states and 3318 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:07:03,763 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2021-04-15 03:07:03,959 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2021-04-15 03:07:04,408 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2021-04-15 03:07:04,646 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2021-04-15 03:07:04,893 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2021-04-15 03:07:05,090 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2021-04-15 03:07:05,298 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 36 [2021-04-15 03:07:05,501 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 40 [2021-04-15 03:07:05,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:07:05,526 INFO L93 Difference]: Finished difference Result 1156 states and 3915 transitions. [2021-04-15 03:07:05,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-15 03:07:05,527 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:07:05,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:07:05,529 INFO L225 Difference]: With dead ends: 1156 [2021-04-15 03:07:05,529 INFO L226 Difference]: Without dead ends: 1081 [2021-04-15 03:07:05,529 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 2333.2ms TimeCoverageRelationStatistics Valid=185, Invalid=745, Unknown=0, NotChecked=0, Total=930 [2021-04-15 03:07:05,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2021-04-15 03:07:05,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 936. [2021-04-15 03:07:05,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 935 states have (on average 3.593582887700535) internal successors, (3360), 935 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:07:05,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 3360 transitions. [2021-04-15 03:07:05,541 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 3360 transitions. Word has length 20 [2021-04-15 03:07:05,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:07:05,541 INFO L480 AbstractCegarLoop]: Abstraction has 936 states and 3360 transitions. [2021-04-15 03:07:05,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:07:05,541 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 3360 transitions. [2021-04-15 03:07:05,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:07:05,542 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:07:05,542 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:07:05,742 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10596 [2021-04-15 03:07:05,743 INFO L428 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:07:05,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:07:05,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1773524372, now seen corresponding path program 66 times [2021-04-15 03:07:05,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:07:05,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256092296] [2021-04-15 03:07:05,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:07:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:07:06,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:07:06,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256092296] [2021-04-15 03:07:06,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309426579] [2021-04-15 03:07:06,039 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:07:06,083 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-04-15 03:07:06,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:07:06,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:07:06,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:07:06,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:06,316 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:06,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:06,323 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:06,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:06,330 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:06,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:07:06,340 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:06,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:07:06,347 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:06,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:06,357 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:06,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:07:06,365 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:06,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:06,372 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:06,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:07:06,379 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:06,383 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:07:06,384 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:06,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:07:06,391 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:06,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:06,398 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:06,402 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:07:06,403 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:06,753 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2021-04-15 03:07:06,753 INFO L628 ElimStorePlain]: treesize reduction 73, result has 79.6 percent of original size [2021-04-15 03:07:06,757 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 9 xjuncts. [2021-04-15 03:07:06,757 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 2 variables, input treesize:487, output treesize:285 [2021-04-15 03:07:07,095 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2021-04-15 03:07:07,303 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-04-15 03:07:08,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:08,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:08,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:07:08,530 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:08,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:08,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:08,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:07:08,546 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:08,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:08,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:08,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:07:08,558 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:08,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:08,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:07:08,569 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:09,232 WARN L205 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 105 [2021-04-15 03:07:09,233 INFO L628 ElimStorePlain]: treesize reduction 1273, result has 21.9 percent of original size [2021-04-15 03:07:09,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:09,241 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:09,463 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-04-15 03:07:09,464 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:09,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:07:09,485 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:09,898 WARN L205 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2021-04-15 03:07:09,898 INFO L628 ElimStorePlain]: treesize reduction 39, result has 88.8 percent of original size [2021-04-15 03:07:09,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:07:09,906 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:10,100 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-04-15 03:07:10,101 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:10,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:07:10,107 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:10,280 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-04-15 03:07:10,281 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:10,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:07:10,289 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:10,480 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-04-15 03:07:10,480 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:10,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:07:10,488 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:10,687 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-15 03:07:10,687 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:10,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:07:10,694 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:10,878 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-04-15 03:07:10,878 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:10,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:07:10,885 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:11,070 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-04-15 03:07:11,071 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:11,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:07:11,077 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:11,260 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-04-15 03:07:11,261 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:11,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:11,268 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:11,435 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-04-15 03:07:11,436 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:11,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:11,442 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:11,606 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-04-15 03:07:11,607 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:11,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:11,613 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:11,786 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-04-15 03:07:11,786 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:11,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:07:11,792 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:11,963 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-04-15 03:07:11,963 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:11,966 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 14 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-04-15 03:07:11,966 INFO L247 ElimStorePlain]: Needed 18 recursive calls to eliminate 16 variables, input treesize:1723, output treesize:243 [2021-04-15 03:07:12,286 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-04-15 03:07:12,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:07:12,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:07:12,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:07:12,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987927006] [2021-04-15 03:07:12,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:07:12,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:07:12,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:07:12,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:07:12,649 INFO L87 Difference]: Start difference. First operand 936 states and 3360 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:07:13,098 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 43 [2021-04-15 03:07:13,751 WARN L205 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 101 [2021-04-15 03:07:14,498 WARN L205 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 107 [2021-04-15 03:07:15,011 WARN L205 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 90 [2021-04-15 03:07:15,524 WARN L205 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2021-04-15 03:07:16,207 WARN L205 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 116 [2021-04-15 03:07:16,694 WARN L205 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 85 [2021-04-15 03:07:17,259 WARN L205 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 99 [2021-04-15 03:07:17,743 WARN L205 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 93 [2021-04-15 03:07:18,459 WARN L205 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 111 [2021-04-15 03:07:18,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:07:18,460 INFO L93 Difference]: Finished difference Result 1307 states and 4438 transitions. [2021-04-15 03:07:18,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-15 03:07:18,460 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:07:18,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:07:18,462 INFO L225 Difference]: With dead ends: 1307 [2021-04-15 03:07:18,462 INFO L226 Difference]: Without dead ends: 1247 [2021-04-15 03:07:18,462 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 6486.1ms TimeCoverageRelationStatistics Valid=190, Invalid=622, Unknown=0, NotChecked=0, Total=812 [2021-04-15 03:07:18,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2021-04-15 03:07:18,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 947. [2021-04-15 03:07:18,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 946 states have (on average 3.5993657505285412) internal successors, (3405), 946 states have internal predecessors, (3405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:07:18,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 3405 transitions. [2021-04-15 03:07:18,473 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 3405 transitions. Word has length 20 [2021-04-15 03:07:18,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:07:18,473 INFO L480 AbstractCegarLoop]: Abstraction has 947 states and 3405 transitions. [2021-04-15 03:07:18,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:07:18,473 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 3405 transitions. [2021-04-15 03:07:18,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:07:18,475 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:07:18,475 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:07:18,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10617 [2021-04-15 03:07:18,676 INFO L428 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:07:18,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:07:18,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1561368754, now seen corresponding path program 67 times [2021-04-15 03:07:18,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:07:18,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137724715] [2021-04-15 03:07:18,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:07:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:07:19,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:07:19,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137724715] [2021-04-15 03:07:19,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131860126] [2021-04-15 03:07:19,174 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:07:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:07:19,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:07:19,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:07:19,419 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2021-04-15 03:07:19,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:07:19,649 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:19,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:19,658 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:19,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:07:19,666 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:19,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:07:19,675 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:19,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:07:19,684 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:19,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:19,692 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:19,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:07:19,703 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:19,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:19,712 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:19,936 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-04-15 03:07:19,936 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:19,941 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 8 xjuncts. [2021-04-15 03:07:19,941 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 2 variables, input treesize:355, output treesize:315 [2021-04-15 03:07:20,182 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-04-15 03:07:21,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:21,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:21,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:07:21,952 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:21,964 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:21,965 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:21,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:07:21,967 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:21,978 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:07:21,980 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:22,647 WARN L205 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 112 [2021-04-15 03:07:22,648 INFO L628 ElimStorePlain]: treesize reduction 1128, result has 22.0 percent of original size [2021-04-15 03:07:22,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:07:22,656 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:22,837 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-04-15 03:07:22,837 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:22,838 INFO L518 ElimStorePlain]: Eliminatee v_prenex_778 vanished before elimination [2021-04-15 03:07:22,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:07:22,844 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:23,051 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-04-15 03:07:23,051 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:23,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:07:23,058 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:23,263 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-04-15 03:07:23,263 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:23,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:23,271 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:23,477 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-04-15 03:07:23,477 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:23,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:23,485 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:23,696 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-04-15 03:07:23,696 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:23,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:23,704 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:23,910 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-04-15 03:07:23,911 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:23,911 INFO L518 ElimStorePlain]: Eliminatee v_prenex_762 vanished before elimination [2021-04-15 03:07:23,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:07:23,918 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:24,118 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-04-15 03:07:24,118 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:24,119 INFO L518 ElimStorePlain]: Eliminatee v_prenex_761 vanished before elimination [2021-04-15 03:07:24,119 INFO L518 ElimStorePlain]: Eliminatee v_prenex_764 vanished before elimination [2021-04-15 03:07:24,119 INFO L518 ElimStorePlain]: Eliminatee v_prenex_786 vanished before elimination [2021-04-15 03:07:24,119 INFO L518 ElimStorePlain]: Eliminatee v_prenex_763 vanished before elimination [2021-04-15 03:07:24,119 INFO L518 ElimStorePlain]: Eliminatee v_prenex_785 vanished before elimination [2021-04-15 03:07:24,119 INFO L518 ElimStorePlain]: Eliminatee v_prenex_766 vanished before elimination [2021-04-15 03:07:24,119 INFO L518 ElimStorePlain]: Eliminatee v_prenex_765 vanished before elimination [2021-04-15 03:07:24,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:07:24,126 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:24,320 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-04-15 03:07:24,321 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:24,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:24,329 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:24,519 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-04-15 03:07:24,519 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:24,519 INFO L518 ElimStorePlain]: Eliminatee v_prenex_768 vanished before elimination [2021-04-15 03:07:24,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:07:24,526 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:24,705 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-04-15 03:07:24,705 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:24,705 INFO L518 ElimStorePlain]: Eliminatee v_prenex_767 vanished before elimination [2021-04-15 03:07:24,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:07:24,713 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:24,875 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-04-15 03:07:24,876 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:24,876 INFO L518 ElimStorePlain]: Eliminatee v_prenex_771 vanished before elimination [2021-04-15 03:07:24,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:07:24,884 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:25,065 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-04-15 03:07:25,066 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:25,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:07:25,074 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:25,254 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-04-15 03:07:25,254 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:25,254 INFO L518 ElimStorePlain]: Eliminatee v_prenex_772 vanished before elimination [2021-04-15 03:07:25,254 INFO L518 ElimStorePlain]: Eliminatee v_prenex_775 vanished before elimination [2021-04-15 03:07:25,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:07:25,261 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:25,441 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-04-15 03:07:25,441 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:25,441 INFO L518 ElimStorePlain]: Eliminatee v_prenex_777 vanished before elimination [2021-04-15 03:07:25,441 INFO L518 ElimStorePlain]: Eliminatee v_prenex_776 vanished before elimination [2021-04-15 03:07:25,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:07:25,448 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:25,644 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-15 03:07:25,645 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:25,647 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 32 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-04-15 03:07:25,647 INFO L247 ElimStorePlain]: Needed 19 recursive calls to eliminate 36 variables, input treesize:1545, output treesize:231 [2021-04-15 03:07:25,842 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-15 03:07:25,988 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-04-15 03:07:26,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:07:26,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:07:26,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:07:26,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380959605] [2021-04-15 03:07:26,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:07:26,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:07:26,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:07:26,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:07:26,197 INFO L87 Difference]: Start difference. First operand 947 states and 3405 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:07:27,174 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 40 [2021-04-15 03:07:28,293 WARN L205 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2021-04-15 03:07:28,807 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2021-04-15 03:07:29,294 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2021-04-15 03:07:29,931 WARN L205 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-04-15 03:07:30,476 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 48 [2021-04-15 03:07:30,855 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 55 [2021-04-15 03:07:30,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:07:30,869 INFO L93 Difference]: Finished difference Result 1440 states and 4808 transitions. [2021-04-15 03:07:30,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-04-15 03:07:30,870 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:07:30,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:07:30,872 INFO L225 Difference]: With dead ends: 1440 [2021-04-15 03:07:30,872 INFO L226 Difference]: Without dead ends: 1365 [2021-04-15 03:07:30,873 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 5033.3ms TimeCoverageRelationStatistics Valid=303, Invalid=1103, Unknown=0, NotChecked=0, Total=1406 [2021-04-15 03:07:30,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2021-04-15 03:07:30,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 952. [2021-04-15 03:07:30,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 951 states have (on average 3.601472134595163) internal successors, (3425), 951 states have internal predecessors, (3425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:07:30,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 3425 transitions. [2021-04-15 03:07:30,885 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 3425 transitions. Word has length 20 [2021-04-15 03:07:30,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:07:30,885 INFO L480 AbstractCegarLoop]: Abstraction has 952 states and 3425 transitions. [2021-04-15 03:07:30,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:07:30,885 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 3425 transitions. [2021-04-15 03:07:30,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:07:30,886 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:07:30,887 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:07:31,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10803,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:07:31,088 INFO L428 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:07:31,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:07:31,088 INFO L82 PathProgramCache]: Analyzing trace with hash -128574150, now seen corresponding path program 68 times [2021-04-15 03:07:31,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:07:31,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554260355] [2021-04-15 03:07:31,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:07:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:07:31,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:07:31,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554260355] [2021-04-15 03:07:31,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426164604] [2021-04-15 03:07:31,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:07:31,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:07:31,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:07:31,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 37 conjunts are in the unsatisfiable core [2021-04-15 03:07:31,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:07:31,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:07:31,879 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:31,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:31,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:31,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:07:31,887 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:31,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:31,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:31,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:07:31,894 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:31,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:31,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:31,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:07:31,902 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:31,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:07:31,910 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:31,914 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:07:31,915 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:31,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:31,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:31,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:07:31,923 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:31,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:31,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:31,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:07:31,931 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:31,935 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:07:31,937 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:31,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:07:31,943 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:31,947 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:07:31,948 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:31,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:31,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:31,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:07:31,955 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:31,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:31,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:31,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:07:31,963 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:31,967 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:07:31,968 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:31,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:31,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:31,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:07:31,975 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:31,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:07:31,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:07:31,981 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:32,240 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2021-04-15 03:07:32,241 INFO L628 ElimStorePlain]: treesize reduction 175, result has 52.1 percent of original size [2021-04-15 03:07:32,243 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-04-15 03:07:32,243 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:714, output treesize:190 [2021-04-15 03:07:32,387 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-04-15 03:07:32,784 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_792], 1=[ends_with_6, v_prenex_791], 3=[ends_with_2], 6=[v_prenex_794], 10=[v_prenex_793]} [2021-04-15 03:07:32,791 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:07:32,792 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:32,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:32,800 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:32,806 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:07:32,807 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:32,813 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:07:32,814 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:32,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:32,822 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:32,828 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:07:32,830 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:33,390 WARN L205 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 93 [2021-04-15 03:07:33,391 INFO L628 ElimStorePlain]: treesize reduction 516, result has 41.6 percent of original size [2021-04-15 03:07:33,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:07:33,398 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:33,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:07:33,405 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:33,635 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-04-15 03:07:33,635 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:33,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:07:33,643 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:33,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:07:33,651 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:33,881 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-15 03:07:33,882 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:33,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:07:33,889 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:33,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:07:33,895 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:34,128 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-04-15 03:07:34,128 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:07:34,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:34,137 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:34,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:07:34,144 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:34,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:34,153 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:34,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:07:34,161 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:34,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:07:34,170 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:34,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:34,179 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:34,584 WARN L205 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2021-04-15 03:07:34,584 INFO L628 ElimStorePlain]: treesize reduction 2, result has 99.4 percent of original size [2021-04-15 03:07:34,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:34,592 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:34,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:07:34,599 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:34,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:34,606 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:34,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:34,614 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:34,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:34,623 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:34,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:07:34,631 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-04-15 03:07:35,003 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2021-04-15 03:07:35,004 INFO L628 ElimStorePlain]: treesize reduction 3, result has 98.9 percent of original size [2021-04-15 03:07:35,006 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 6 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-04-15 03:07:35,007 INFO L247 ElimStorePlain]: Needed 25 recursive calls to eliminate 7 variables, input treesize:1068, output treesize:250 [2021-04-15 03:07:35,273 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2021-04-15 03:07:35,433 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-04-15 03:07:35,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:07:35,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:07:35,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:07:35,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038469601] [2021-04-15 03:07:35,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:07:35,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:07:35,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:07:35,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:07:35,737 INFO L87 Difference]: Start difference. First operand 952 states and 3425 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:07:36,159 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 40 [2021-04-15 03:07:36,392 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 34 [2021-04-15 03:07:36,770 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2021-04-15 03:07:37,184 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2021-04-15 03:07:37,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:07:37,225 INFO L93 Difference]: Finished difference Result 1053 states and 3714 transitions. [2021-04-15 03:07:37,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-04-15 03:07:37,225 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:07:37,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:07:37,227 INFO L225 Difference]: With dead ends: 1053 [2021-04-15 03:07:37,227 INFO L226 Difference]: Without dead ends: 1038 [2021-04-15 03:07:37,227 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 2325.5ms TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2021-04-15 03:07:37,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2021-04-15 03:07:37,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 950. [2021-04-15 03:07:37,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 949 states have (on average 3.6037934668071654) internal successors, (3420), 949 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:07:37,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 3420 transitions. [2021-04-15 03:07:37,238 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 3420 transitions. Word has length 20 [2021-04-15 03:07:37,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:07:37,238 INFO L480 AbstractCegarLoop]: Abstraction has 950 states and 3420 transitions. [2021-04-15 03:07:37,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:07:37,238 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 3420 transitions. [2021-04-15 03:07:37,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:07:37,240 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:07:37,240 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:07:37,440 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11070,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:07:37,440 INFO L428 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:07:37,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:07:37,440 INFO L82 PathProgramCache]: Analyzing trace with hash 504067178, now seen corresponding path program 69 times [2021-04-15 03:07:37,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:07:37,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994954028] [2021-04-15 03:07:37,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:07:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:07:37,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:07:37,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994954028] [2021-04-15 03:07:37,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030724092] [2021-04-15 03:07:37,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:07:37,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-04-15 03:07:37,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:07:37,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:07:37,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:07:38,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:07:38,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:07:38,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:07:38,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643711507] [2021-04-15 03:07:38,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:07:38,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:07:38,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:07:38,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:07:38,397 INFO L87 Difference]: Start difference. First operand 950 states and 3420 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:07:39,058 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-15 03:07:39,222 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2021-04-15 03:07:39,547 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2021-04-15 03:07:39,777 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2021-04-15 03:07:40,024 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-04-15 03:07:40,143 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2021-04-15 03:07:40,352 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2021-04-15 03:07:40,697 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2021-04-15 03:07:40,825 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2021-04-15 03:07:41,121 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-04-15 03:07:41,471 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2021-04-15 03:07:41,675 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2021-04-15 03:07:41,942 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-04-15 03:07:42,325 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2021-04-15 03:07:42,691 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2021-04-15 03:07:42,884 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2021-04-15 03:07:43,257 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2021-04-15 03:07:43,530 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2021-04-15 03:07:44,000 WARN L205 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2021-04-15 03:07:44,186 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2021-04-15 03:07:44,553 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2021-04-15 03:07:44,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:07:44,597 INFO L93 Difference]: Finished difference Result 1626 states and 5397 transitions. [2021-04-15 03:07:44,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-04-15 03:07:44,598 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:07:44,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:07:44,600 INFO L225 Difference]: With dead ends: 1626 [2021-04-15 03:07:44,600 INFO L226 Difference]: Without dead ends: 1596 [2021-04-15 03:07:44,600 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 6237.3ms TimeCoverageRelationStatistics Valid=479, Invalid=1683, Unknown=0, NotChecked=0, Total=2162 [2021-04-15 03:07:44,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2021-04-15 03:07:44,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 964. [2021-04-15 03:07:44,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 963 states have (on average 3.5908618899273104) internal successors, (3458), 963 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:07:44,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 3458 transitions. [2021-04-15 03:07:44,614 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 3458 transitions. Word has length 20 [2021-04-15 03:07:44,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:07:44,614 INFO L480 AbstractCegarLoop]: Abstraction has 964 states and 3458 transitions. [2021-04-15 03:07:44,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:07:44,614 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 3458 transitions. [2021-04-15 03:07:44,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:07:44,615 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:07:44,615 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:07:44,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11177,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:07:44,816 INFO L428 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:07:44,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:07:44,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1731378416, now seen corresponding path program 70 times [2021-04-15 03:07:44,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:07:44,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873623835] [2021-04-15 03:07:44,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:07:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:07:45,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:07:45,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873623835] [2021-04-15 03:07:45,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749997627] [2021-04-15 03:07:45,150 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:07:45,193 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 03:07:45,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:07:45,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:07:45,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:07:45,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:07:45,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:07:45,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:07:45,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334470909] [2021-04-15 03:07:45,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:07:45,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:07:45,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:07:45,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:07:45,786 INFO L87 Difference]: Start difference. First operand 964 states and 3458 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:07:46,282 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2021-04-15 03:07:46,450 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-04-15 03:07:46,913 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2021-04-15 03:07:47,163 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2021-04-15 03:07:47,483 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2021-04-15 03:07:47,814 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2021-04-15 03:07:48,162 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2021-04-15 03:07:48,448 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2021-04-15 03:07:48,615 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2021-04-15 03:07:48,894 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2021-04-15 03:07:49,096 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2021-04-15 03:07:49,402 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2021-04-15 03:07:49,523 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2021-04-15 03:07:49,790 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-04-15 03:07:50,042 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2021-04-15 03:07:50,459 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2021-04-15 03:07:50,870 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2021-04-15 03:07:50,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:07:50,917 INFO L93 Difference]: Finished difference Result 1695 states and 5757 transitions. [2021-04-15 03:07:50,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-04-15 03:07:50,917 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:07:50,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:07:50,920 INFO L225 Difference]: With dead ends: 1695 [2021-04-15 03:07:50,920 INFO L226 Difference]: Without dead ends: 1635 [2021-04-15 03:07:50,920 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 5080.6ms TimeCoverageRelationStatistics Valid=388, Invalid=1592, Unknown=0, NotChecked=0, Total=1980 [2021-04-15 03:07:50,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2021-04-15 03:07:50,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 971. [2021-04-15 03:07:50,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 3.588659793814433) internal successors, (3481), 970 states have internal predecessors, (3481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:07:50,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 3481 transitions. [2021-04-15 03:07:50,942 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 3481 transitions. Word has length 20 [2021-04-15 03:07:50,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:07:50,942 INFO L480 AbstractCegarLoop]: Abstraction has 971 states and 3481 transitions. [2021-04-15 03:07:50,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:07:50,943 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 3481 transitions. [2021-04-15 03:07:50,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:07:50,944 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:07:50,944 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:07:51,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11198,75 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:07:51,146 INFO L428 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:07:51,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:07:51,146 INFO L82 PathProgramCache]: Analyzing trace with hash -555887772, now seen corresponding path program 71 times [2021-04-15 03:07:51,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:07:51,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870846362] [2021-04-15 03:07:51,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:07:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:07:51,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:07:51,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870846362] [2021-04-15 03:07:51,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775476040] [2021-04-15 03:07:51,492 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:07:51,548 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:07:51,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:07:51,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:07:51,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:07:52,023 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2021-04-15 03:07:52,271 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-04-15 03:07:52,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:07:52,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:07:52,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-04-15 03:07:52,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494571561] [2021-04-15 03:07:52,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-15 03:07:52,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:07:52,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-15 03:07:52,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-04-15 03:07:52,455 INFO L87 Difference]: Start difference. First operand 971 states and 3481 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:07:53,134 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2021-04-15 03:07:53,413 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-04-15 03:07:53,705 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-04-15 03:07:54,155 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-04-15 03:07:54,410 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2021-04-15 03:07:54,619 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2021-04-15 03:07:54,863 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2021-04-15 03:07:55,163 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2021-04-15 03:07:55,368 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2021-04-15 03:07:55,741 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2021-04-15 03:07:55,986 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-04-15 03:07:56,228 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2021-04-15 03:07:56,715 WARN L205 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2021-04-15 03:07:57,067 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2021-04-15 03:07:57,375 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2021-04-15 03:07:57,741 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-04-15 03:07:58,189 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2021-04-15 03:07:58,518 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2021-04-15 03:07:58,974 WARN L205 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2021-04-15 03:07:59,309 WARN L205 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2021-04-15 03:07:59,810 WARN L205 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2021-04-15 03:07:59,975 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2021-04-15 03:08:00,481 WARN L205 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2021-04-15 03:08:00,966 WARN L205 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2021-04-15 03:08:01,100 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2021-04-15 03:08:01,561 WARN L205 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2021-04-15 03:08:01,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:08:01,624 INFO L93 Difference]: Finished difference Result 1681 states and 5568 transitions. [2021-04-15 03:08:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-04-15 03:08:01,624 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:08:01,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:08:01,626 INFO L225 Difference]: With dead ends: 1681 [2021-04-15 03:08:01,626 INFO L226 Difference]: Without dead ends: 1636 [2021-04-15 03:08:01,627 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 9098.2ms TimeCoverageRelationStatistics Valid=597, Invalid=2825, Unknown=0, NotChecked=0, Total=3422 [2021-04-15 03:08:01,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-04-15 03:08:01,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 971. [2021-04-15 03:08:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 3.588659793814433) internal successors, (3481), 970 states have internal predecessors, (3481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:01,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 3481 transitions. [2021-04-15 03:08:01,640 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 3481 transitions. Word has length 20 [2021-04-15 03:08:01,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:08:01,640 INFO L480 AbstractCegarLoop]: Abstraction has 971 states and 3481 transitions. [2021-04-15 03:08:01,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:01,640 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 3481 transitions. [2021-04-15 03:08:01,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:08:01,641 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:08:01,641 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:08:01,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11219,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:08:01,842 INFO L428 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:08:01,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:08:01,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1896142186, now seen corresponding path program 72 times [2021-04-15 03:08:01,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:08:01,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269842676] [2021-04-15 03:08:01,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:08:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:08:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:08:02,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269842676] [2021-04-15 03:08:02,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566946378] [2021-04-15 03:08:02,112 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:08:02,155 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-04-15 03:08:02,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:08:02,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:08:02,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:08:02,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:08:02,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:08:02,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:08:02,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767216918] [2021-04-15 03:08:02,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:08:02,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:08:02,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:08:02,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:08:02,809 INFO L87 Difference]: Start difference. First operand 971 states and 3481 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:02,964 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-04-15 03:08:03,141 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-04-15 03:08:03,645 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2021-04-15 03:08:03,778 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2021-04-15 03:08:04,105 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2021-04-15 03:08:04,540 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2021-04-15 03:08:04,963 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2021-04-15 03:08:05,262 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2021-04-15 03:08:05,674 WARN L205 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2021-04-15 03:08:06,156 WARN L205 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2021-04-15 03:08:06,451 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2021-04-15 03:08:06,739 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2021-04-15 03:08:07,125 WARN L205 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-04-15 03:08:07,440 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2021-04-15 03:08:07,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:08:07,514 INFO L93 Difference]: Finished difference Result 1776 states and 5871 transitions. [2021-04-15 03:08:07,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-04-15 03:08:07,515 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:08:07,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:08:07,518 INFO L225 Difference]: With dead ends: 1776 [2021-04-15 03:08:07,518 INFO L226 Difference]: Without dead ends: 1701 [2021-04-15 03:08:07,518 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 4799.9ms TimeCoverageRelationStatistics Valid=296, Invalid=1036, Unknown=0, NotChecked=0, Total=1332 [2021-04-15 03:08:07,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2021-04-15 03:08:07,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 988. [2021-04-15 03:08:07,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 987 states have (on average 3.5937183383991895) internal successors, (3547), 987 states have internal predecessors, (3547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:07,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 3547 transitions. [2021-04-15 03:08:07,533 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 3547 transitions. Word has length 20 [2021-04-15 03:08:07,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:08:07,533 INFO L480 AbstractCegarLoop]: Abstraction has 988 states and 3547 transitions. [2021-04-15 03:08:07,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:07,533 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 3547 transitions. [2021-04-15 03:08:07,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:08:07,534 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:08:07,534 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:08:07,735 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11241,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:08:07,735 INFO L428 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:08:07,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:08:07,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1801488452, now seen corresponding path program 73 times [2021-04-15 03:08:07,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:08:07,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294415946] [2021-04-15 03:08:07,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:08:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:08:08,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:08:08,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294415946] [2021-04-15 03:08:08,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032391723] [2021-04-15 03:08:08,017 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:08:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:08:08,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:08:08,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:08:08,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:08:08,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:08:08,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:08:08,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032957029] [2021-04-15 03:08:08,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:08:08,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:08:08,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:08:08,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:08:08,752 INFO L87 Difference]: Start difference. First operand 988 states and 3547 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:09,015 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2021-04-15 03:08:09,574 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2021-04-15 03:08:09,761 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2021-04-15 03:08:09,969 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-04-15 03:08:10,303 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2021-04-15 03:08:10,630 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2021-04-15 03:08:10,900 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 50 [2021-04-15 03:08:11,085 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2021-04-15 03:08:11,465 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2021-04-15 03:08:11,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:08:11,672 INFO L93 Difference]: Finished difference Result 1598 states and 5325 transitions. [2021-04-15 03:08:11,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-15 03:08:11,673 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:08:11,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:08:11,675 INFO L225 Difference]: With dead ends: 1598 [2021-04-15 03:08:11,676 INFO L226 Difference]: Without dead ends: 1523 [2021-04-15 03:08:11,676 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 3012.4ms TimeCoverageRelationStatistics Valid=225, Invalid=831, Unknown=0, NotChecked=0, Total=1056 [2021-04-15 03:08:11,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-04-15 03:08:11,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1005. [2021-04-15 03:08:11,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1005 states, 1004 states have (on average 3.6075697211155378) internal successors, (3622), 1004 states have internal predecessors, (3622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:11,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 3622 transitions. [2021-04-15 03:08:11,691 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 3622 transitions. Word has length 20 [2021-04-15 03:08:11,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:08:11,691 INFO L480 AbstractCegarLoop]: Abstraction has 1005 states and 3622 transitions. [2021-04-15 03:08:11,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:11,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 3622 transitions. [2021-04-15 03:08:11,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:08:11,692 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:08:11,693 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:08:11,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11263,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:08:11,897 INFO L428 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:08:11,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:08:11,897 INFO L82 PathProgramCache]: Analyzing trace with hash -625997808, now seen corresponding path program 74 times [2021-04-15 03:08:11,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:08:11,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951230229] [2021-04-15 03:08:11,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:08:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:08:12,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:08:12,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951230229] [2021-04-15 03:08:12,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811169982] [2021-04-15 03:08:12,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:08:12,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:08:12,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:08:12,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:08:12,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:08:12,700 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2021-04-15 03:08:12,956 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-04-15 03:08:13,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:08:13,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:08:13,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:08:13,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189728941] [2021-04-15 03:08:13,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:08:13,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:08:13,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:08:13,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:08:13,147 INFO L87 Difference]: Start difference. First operand 1005 states and 3622 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:13,676 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-04-15 03:08:13,861 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-04-15 03:08:14,395 WARN L205 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2021-04-15 03:08:14,781 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2021-04-15 03:08:15,212 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2021-04-15 03:08:15,351 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2021-04-15 03:08:15,841 WARN L205 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2021-04-15 03:08:15,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:08:15,899 INFO L93 Difference]: Finished difference Result 1517 states and 5130 transitions. [2021-04-15 03:08:15,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-04-15 03:08:15,900 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:08:15,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:08:15,902 INFO L225 Difference]: With dead ends: 1517 [2021-04-15 03:08:15,902 INFO L226 Difference]: Without dead ends: 1457 [2021-04-15 03:08:15,902 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 3239.7ms TimeCoverageRelationStatistics Valid=222, Invalid=770, Unknown=0, NotChecked=0, Total=992 [2021-04-15 03:08:15,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2021-04-15 03:08:15,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1013. [2021-04-15 03:08:15,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1012 states have (on average 3.6146245059288535) internal successors, (3658), 1012 states have internal predecessors, (3658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:15,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 3658 transitions. [2021-04-15 03:08:15,916 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 3658 transitions. Word has length 20 [2021-04-15 03:08:15,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:08:15,916 INFO L480 AbstractCegarLoop]: Abstraction has 1013 states and 3658 transitions. [2021-04-15 03:08:15,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:15,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 3658 transitions. [2021-04-15 03:08:15,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:08:15,917 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:08:15,917 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:08:16,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11281,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:08:16,118 INFO L428 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:08:16,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:08:16,118 INFO L82 PathProgramCache]: Analyzing trace with hash -457736914, now seen corresponding path program 75 times [2021-04-15 03:08:16,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:08:16,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681671431] [2021-04-15 03:08:16,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:08:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:08:16,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:08:16,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681671431] [2021-04-15 03:08:16,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408058684] [2021-04-15 03:08:16,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:08:16,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-04-15 03:08:16,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:08:16,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:08:16,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:08:16,794 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2021-04-15 03:08:17,130 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-04-15 03:08:17,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:08:17,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:08:17,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:08:17,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975822553] [2021-04-15 03:08:17,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:08:17,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:08:17,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:08:17,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:08:17,230 INFO L87 Difference]: Start difference. First operand 1013 states and 3658 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:17,832 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2021-04-15 03:08:18,162 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2021-04-15 03:08:18,389 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2021-04-15 03:08:18,679 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2021-04-15 03:08:18,869 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2021-04-15 03:08:19,129 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2021-04-15 03:08:19,589 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2021-04-15 03:08:19,750 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-04-15 03:08:20,068 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2021-04-15 03:08:20,563 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2021-04-15 03:08:20,787 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2021-04-15 03:08:21,147 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2021-04-15 03:08:21,715 WARN L205 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-04-15 03:08:22,322 WARN L205 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-04-15 03:08:22,573 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2021-04-15 03:08:23,137 WARN L205 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2021-04-15 03:08:23,516 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2021-04-15 03:08:24,185 WARN L205 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2021-04-15 03:08:24,404 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-04-15 03:08:24,975 WARN L205 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2021-04-15 03:08:25,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:08:25,084 INFO L93 Difference]: Finished difference Result 1880 states and 6414 transitions. [2021-04-15 03:08:25,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-04-15 03:08:25,085 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:08:25,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:08:25,088 INFO L225 Difference]: With dead ends: 1880 [2021-04-15 03:08:25,088 INFO L226 Difference]: Without dead ends: 1850 [2021-04-15 03:08:25,088 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 7817.7ms TimeCoverageRelationStatistics Valid=385, Invalid=1685, Unknown=0, NotChecked=0, Total=2070 [2021-04-15 03:08:25,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2021-04-15 03:08:25,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1018. [2021-04-15 03:08:25,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1018 states, 1017 states have (on average 3.6155358898721732) internal successors, (3677), 1017 states have internal predecessors, (3677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:25,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 3677 transitions. [2021-04-15 03:08:25,103 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 3677 transitions. Word has length 20 [2021-04-15 03:08:25,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:08:25,104 INFO L480 AbstractCegarLoop]: Abstraction has 1018 states and 3677 transitions. [2021-04-15 03:08:25,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:25,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 3677 transitions. [2021-04-15 03:08:25,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:08:25,105 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:08:25,105 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:08:25,305 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11307,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:08:25,306 INFO L428 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:08:25,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:08:25,306 INFO L82 PathProgramCache]: Analyzing trace with hash -73024590, now seen corresponding path program 76 times [2021-04-15 03:08:25,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:08:25,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850631861] [2021-04-15 03:08:25,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:08:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:08:25,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:08:25,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850631861] [2021-04-15 03:08:25,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975206704] [2021-04-15 03:08:25,703 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:08:25,763 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 03:08:25,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:08:25,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:08:25,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:08:25,957 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2021-04-15 03:08:26,326 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-15 03:08:26,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:08:26,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:08:26,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-04-15 03:08:26,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251660116] [2021-04-15 03:08:26,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-04-15 03:08:26,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:08:26,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-04-15 03:08:26,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-04-15 03:08:26,738 INFO L87 Difference]: Start difference. First operand 1018 states and 3677 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:27,291 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-04-15 03:08:27,581 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-15 03:08:27,741 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2021-04-15 03:08:28,144 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2021-04-15 03:08:28,373 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-15 03:08:28,590 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-04-15 03:08:28,783 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2021-04-15 03:08:29,074 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-04-15 03:08:29,613 WARN L205 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-04-15 03:08:29,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:08:29,635 INFO L93 Difference]: Finished difference Result 1611 states and 5434 transitions. [2021-04-15 03:08:29,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-04-15 03:08:29,636 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:08:29,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:08:29,638 INFO L225 Difference]: With dead ends: 1611 [2021-04-15 03:08:29,638 INFO L226 Difference]: Without dead ends: 1566 [2021-04-15 03:08:29,639 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 3416.7ms TimeCoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2021-04-15 03:08:29,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2021-04-15 03:08:29,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1025. [2021-04-15 03:08:29,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 1024 states have (on average 3.6171875) internal successors, (3704), 1024 states have internal predecessors, (3704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:29,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 3704 transitions. [2021-04-15 03:08:29,652 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 3704 transitions. Word has length 20 [2021-04-15 03:08:29,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:08:29,652 INFO L480 AbstractCegarLoop]: Abstraction has 1025 states and 3704 transitions. [2021-04-15 03:08:29,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:29,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 3704 transitions. [2021-04-15 03:08:29,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:08:29,653 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:08:29,653 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:08:29,854 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11328,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:08:29,854 INFO L428 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:08:29,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:08:29,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1863375320, now seen corresponding path program 77 times [2021-04-15 03:08:29,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:08:29,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866963568] [2021-04-15 03:08:29,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:08:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:08:30,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:08:30,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866963568] [2021-04-15 03:08:30,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966391303] [2021-04-15 03:08:30,230 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:08:30,279 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-04-15 03:08:30,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:08:30,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 37 conjunts are in the unsatisfiable core [2021-04-15 03:08:30,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:08:30,968 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-04-15 03:08:31,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:08:31,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:08:31,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-04-15 03:08:31,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841355638] [2021-04-15 03:08:31,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-15 03:08:31,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:08:31,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-15 03:08:31,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-04-15 03:08:31,165 INFO L87 Difference]: Start difference. First operand 1025 states and 3704 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:31,598 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2021-04-15 03:08:32,025 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2021-04-15 03:08:32,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:08:32,237 INFO L93 Difference]: Finished difference Result 1434 states and 4930 transitions. [2021-04-15 03:08:32,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-15 03:08:32,238 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:08:32,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:08:32,240 INFO L225 Difference]: With dead ends: 1434 [2021-04-15 03:08:32,240 INFO L226 Difference]: Without dead ends: 1419 [2021-04-15 03:08:32,241 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1757.9ms TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2021-04-15 03:08:32,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2021-04-15 03:08:32,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1025. [2021-04-15 03:08:32,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 1024 states have (on average 3.6171875) internal successors, (3704), 1024 states have internal predecessors, (3704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:32,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 3704 transitions. [2021-04-15 03:08:32,254 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 3704 transitions. Word has length 20 [2021-04-15 03:08:32,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:08:32,254 INFO L480 AbstractCegarLoop]: Abstraction has 1025 states and 3704 transitions. [2021-04-15 03:08:32,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:32,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 3704 transitions. [2021-04-15 03:08:32,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:08:32,255 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:08:32,255 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:08:32,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11349,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:08:32,456 INFO L428 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:08:32,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:08:32,456 INFO L82 PathProgramCache]: Analyzing trace with hash -157505874, now seen corresponding path program 78 times [2021-04-15 03:08:32,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:08:32,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497036184] [2021-04-15 03:08:32,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:08:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:08:32,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:08:32,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497036184] [2021-04-15 03:08:32,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900147885] [2021-04-15 03:08:32,804 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:08:32,849 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-04-15 03:08:32,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:08:32,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:08:32,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:08:34,014 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:34,015 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,021 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:34,022 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:34,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:34,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:08:34,032 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:34,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:34,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:08:34,041 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:34,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:34,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:08:34,051 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,056 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:34,058 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,064 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:34,065 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:34,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:34,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:08:34,075 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,080 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:34,081 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,088 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:34,089 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,094 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:34,096 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,101 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:34,103 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:34,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:34,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:08:34,112 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:34,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:34,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:08:34,121 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:34,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:34,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:08:34,131 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:34,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:34,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:08:34,139 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,145 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:34,146 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:34,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:34,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:08:34,156 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,161 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:34,163 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,168 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:34,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:34,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:08:34,171 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,177 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:34,178 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,183 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:34,185 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:34,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:34,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:08:34,194 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:34,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:08:34,202 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,533 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-15 03:08:34,533 INFO L628 ElimStorePlain]: treesize reduction 21, result has 89.7 percent of original size [2021-04-15 03:08:34,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:08:34,540 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:08:34,547 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:08:34,554 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:08:34,561 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:08:34,567 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:08:34,574 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:34,711 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-04-15 03:08:34,711 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:08:34,713 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-04-15 03:08:34,713 INFO L247 ElimStorePlain]: Needed 31 recursive calls to eliminate 3 variables, input treesize:1005, output treesize:132 [2021-04-15 03:08:34,869 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-04-15 03:08:35,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:08:35,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:08:35,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:08:35,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055041502] [2021-04-15 03:08:35,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:08:35,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:08:35,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:08:35,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:08:35,097 INFO L87 Difference]: Start difference. First operand 1025 states and 3704 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:35,241 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2021-04-15 03:08:35,375 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2021-04-15 03:08:35,773 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2021-04-15 03:08:36,009 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2021-04-15 03:08:36,177 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2021-04-15 03:08:36,431 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2021-04-15 03:08:36,662 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-04-15 03:08:37,074 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2021-04-15 03:08:37,406 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2021-04-15 03:08:37,914 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2021-04-15 03:08:38,061 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2021-04-15 03:08:38,362 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2021-04-15 03:08:38,776 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2021-04-15 03:08:39,197 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-04-15 03:08:39,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:08:39,235 INFO L93 Difference]: Finished difference Result 1436 states and 4823 transitions. [2021-04-15 03:08:39,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-04-15 03:08:39,236 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:08:39,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:08:39,238 INFO L225 Difference]: With dead ends: 1436 [2021-04-15 03:08:39,238 INFO L226 Difference]: Without dead ends: 1361 [2021-04-15 03:08:39,238 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 4238.5ms TimeCoverageRelationStatistics Valid=210, Invalid=1050, Unknown=0, NotChecked=0, Total=1260 [2021-04-15 03:08:39,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2021-04-15 03:08:39,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1029. [2021-04-15 03:08:39,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1028 states have (on average 3.6167315175097277) internal successors, (3718), 1028 states have internal predecessors, (3718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:39,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 3718 transitions. [2021-04-15 03:08:39,258 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 3718 transitions. Word has length 20 [2021-04-15 03:08:39,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:08:39,258 INFO L480 AbstractCegarLoop]: Abstraction has 1029 states and 3718 transitions. [2021-04-15 03:08:39,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:39,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 3718 transitions. [2021-04-15 03:08:39,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:08:39,259 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:08:39,259 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:08:39,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11368 [2021-04-15 03:08:39,460 INFO L428 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:08:39,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:08:39,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1017984770, now seen corresponding path program 79 times [2021-04-15 03:08:39,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:08:39,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524567098] [2021-04-15 03:08:39,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:08:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:08:39,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:08:39,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524567098] [2021-04-15 03:08:39,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250142973] [2021-04-15 03:08:39,778 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:08:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:08:39,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:08:39,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:08:40,020 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2021-04-15 03:08:40,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:40,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:40,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:08:40,668 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:40,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:40,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:40,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:08:40,677 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:40,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:40,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:40,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:08:40,687 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:40,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:40,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:40,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:08:40,697 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:40,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:40,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:40,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:08:40,707 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:40,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:40,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:40,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:08:40,715 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:40,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:40,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:40,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:08:40,725 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:40,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:40,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:40,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:08:40,734 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:40,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:40,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:40,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:08:40,743 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:40,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:40,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:40,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:08:40,751 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:40,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:40,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:40,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:08:40,761 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:40,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:40,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:08:40,769 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:40,925 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-04-15 03:08:40,925 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:08:40,932 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 6 xjuncts. [2021-04-15 03:08:40,933 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 2 variables, input treesize:473, output treesize:189 [2021-04-15 03:08:41,124 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-04-15 03:08:42,291 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:42,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:42,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:08:42,295 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:42,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:42,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:08:42,303 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:42,672 WARN L205 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2021-04-15 03:08:42,673 INFO L628 ElimStorePlain]: treesize reduction 190, result has 47.9 percent of original size [2021-04-15 03:08:42,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:08:42,681 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:42,824 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-04-15 03:08:42,824 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:08:42,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:08:42,831 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:42,966 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-04-15 03:08:42,967 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:08:42,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:08:42,973 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:43,109 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-04-15 03:08:43,110 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:08:43,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:08:43,116 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:43,260 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-04-15 03:08:43,261 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:08:43,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:08:43,267 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:43,392 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-04-15 03:08:43,392 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:08:43,395 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 6 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-04-15 03:08:43,395 INFO L247 ElimStorePlain]: Needed 8 recursive calls to eliminate 9 variables, input treesize:407, output treesize:132 [2021-04-15 03:08:43,530 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-04-15 03:08:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:08:43,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:08:43,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:08:43,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370511306] [2021-04-15 03:08:43,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:08:43,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:08:43,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:08:43,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:08:43,694 INFO L87 Difference]: Start difference. First operand 1029 states and 3718 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:44,144 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2021-04-15 03:08:44,344 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-04-15 03:08:44,555 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2021-04-15 03:08:44,805 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2021-04-15 03:08:45,008 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2021-04-15 03:08:45,267 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2021-04-15 03:08:45,710 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2021-04-15 03:08:46,087 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2021-04-15 03:08:46,450 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2021-04-15 03:08:46,832 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-04-15 03:08:46,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:08:46,847 INFO L93 Difference]: Finished difference Result 1389 states and 4731 transitions. [2021-04-15 03:08:46,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-04-15 03:08:46,848 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:08:46,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:08:46,849 INFO L225 Difference]: With dead ends: 1389 [2021-04-15 03:08:46,850 INFO L226 Difference]: Without dead ends: 1329 [2021-04-15 03:08:46,850 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3595.5ms TimeCoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2021-04-15 03:08:46,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-04-15 03:08:46,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1035. [2021-04-15 03:08:46,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1034 states have (on average 3.613152804642166) internal successors, (3736), 1034 states have internal predecessors, (3736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:46,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 3736 transitions. [2021-04-15 03:08:46,864 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 3736 transitions. Word has length 20 [2021-04-15 03:08:46,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:08:46,864 INFO L480 AbstractCegarLoop]: Abstraction has 1035 states and 3736 transitions. [2021-04-15 03:08:46,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:46,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 3736 transitions. [2021-04-15 03:08:46,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:08:46,866 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:08:46,866 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:08:47,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11579 [2021-04-15 03:08:47,066 INFO L428 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:08:47,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:08:47,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1832315252, now seen corresponding path program 80 times [2021-04-15 03:08:47,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:08:47,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946018073] [2021-04-15 03:08:47,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:08:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:08:47,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:08:47,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946018073] [2021-04-15 03:08:47,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845556866] [2021-04-15 03:08:47,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:08:47,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:08:47,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:08:47,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:08:47,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:08:47,926 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2021-04-15 03:08:49,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:49,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:49,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:08:49,917 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:49,923 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:49,924 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:49,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:49,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:49,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:08:49,934 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:49,939 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:49,941 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:49,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:49,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:49,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:08:49,950 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:49,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:49,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:49,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:08:49,959 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:49,965 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:49,966 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:49,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:49,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:49,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:08:49,976 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:49,981 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:49,983 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:49,988 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:49,990 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:49,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:49,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:49,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:08:49,999 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:50,005 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:50,006 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:50,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:50,013 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:50,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:08:50,015 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:50,021 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:50,023 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:50,028 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:50,029 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:50,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:50,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:50,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:08:50,038 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:50,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:50,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:50,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:08:50,047 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:50,053 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:50,055 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:50,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:50,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:50,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:08:50,065 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:50,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:50,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:50,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:08:50,075 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:50,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:50,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:50,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:08:50,084 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:50,089 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:50,091 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:50,096 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:50,098 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:50,103 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:50,104 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:50,435 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-04-15 03:08:50,436 INFO L628 ElimStorePlain]: treesize reduction 21, result has 89.7 percent of original size [2021-04-15 03:08:50,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:08:50,442 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:50,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:08:50,449 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:50,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:08:50,456 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:50,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:08:50,463 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:50,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:08:50,470 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:50,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:08:50,477 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:50,612 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-04-15 03:08:50,612 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:08:50,614 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-04-15 03:08:50,615 INFO L247 ElimStorePlain]: Needed 31 recursive calls to eliminate 3 variables, input treesize:1005, output treesize:132 [2021-04-15 03:08:50,760 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-04-15 03:08:50,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:08:50,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:08:50,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:08:50,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387095011] [2021-04-15 03:08:50,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:08:50,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:08:50,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:08:50,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:08:50,996 INFO L87 Difference]: Start difference. First operand 1035 states and 3736 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:51,978 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2021-04-15 03:08:52,229 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 38 [2021-04-15 03:08:52,820 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-04-15 03:08:53,219 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2021-04-15 03:08:53,531 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-04-15 03:08:53,747 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2021-04-15 03:08:53,912 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2021-04-15 03:08:54,183 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2021-04-15 03:08:54,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:08:54,246 INFO L93 Difference]: Finished difference Result 1530 states and 5097 transitions. [2021-04-15 03:08:54,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-04-15 03:08:54,247 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:08:54,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:08:54,249 INFO L225 Difference]: With dead ends: 1530 [2021-04-15 03:08:54,249 INFO L226 Difference]: Without dead ends: 1470 [2021-04-15 03:08:54,249 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 3554.0ms TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2021-04-15 03:08:54,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2021-04-15 03:08:54,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1049. [2021-04-15 03:08:54,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 1048 states have (on average 3.6192748091603053) internal successors, (3793), 1048 states have internal predecessors, (3793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:54,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 3793 transitions. [2021-04-15 03:08:54,262 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 3793 transitions. Word has length 20 [2021-04-15 03:08:54,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:08:54,262 INFO L480 AbstractCegarLoop]: Abstraction has 1049 states and 3793 transitions. [2021-04-15 03:08:54,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:08:54,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 3793 transitions. [2021-04-15 03:08:54,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:08:54,264 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:08:54,264 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:08:54,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11914 [2021-04-15 03:08:54,466 INFO L428 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:08:54,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:08:54,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1612649706, now seen corresponding path program 81 times [2021-04-15 03:08:54,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:08:54,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001891085] [2021-04-15 03:08:54,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:08:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:08:54,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:08:54,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001891085] [2021-04-15 03:08:54,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721557810] [2021-04-15 03:08:54,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:08:54,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-04-15 03:08:54,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:08:54,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:08:54,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:08:57,758 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:57,759 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:57,766 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:57,767 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:57,775 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:57,776 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:57,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:08:57,778 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:57,785 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:57,786 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:57,794 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:57,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:57,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:08:57,798 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:57,804 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:57,806 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:57,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:57,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:57,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:08:57,816 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:57,823 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:57,824 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:57,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:57,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:57,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:08:57,838 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:57,845 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:57,847 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:57,854 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:57,855 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:57,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:57,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:57,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:08:57,866 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:57,873 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:57,874 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:57,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:57,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:57,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:08:57,886 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:57,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:57,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:57,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:08:57,898 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:57,905 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:57,907 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:57,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:57,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:57,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:08:57,918 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:57,925 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:57,927 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:57,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:57,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:57,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:08:57,939 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:57,946 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:57,947 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:57,955 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:57,956 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:57,964 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:57,965 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:57,972 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:57,973 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:57,981 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:57,982 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:57,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:57,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:57,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:08:57,993 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,000 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:58,002 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,009 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:58,010 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,017 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:58,019 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:08:58,030 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,037 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:58,038 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:08:58,050 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:08:58,061 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:08:58,072 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,079 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:58,081 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,088 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:58,089 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:08:58,099 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:08:58,110 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:08:58,120 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:08:58,131 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,138 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:58,140 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:08:58,151 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:08:58,161 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,168 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:08:58,172 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:08:58,183 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,191 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:08:58,194 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,200 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:58,202 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,209 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:58,210 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:08:58,221 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:08:58,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:08:58,231 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,237 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:08:58,238 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,848 WARN L205 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2021-04-15 03:08:58,849 INFO L628 ElimStorePlain]: treesize reduction 148, result has 69.5 percent of original size [2021-04-15 03:08:58,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:08:58,857 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:08:58,865 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:08:58,873 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:08:58,881 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:08:58,890 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:08:58,898 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:08:58,907 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:08:58,915 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:08:58,923 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:58,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:08:58,931 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-04-15 03:08:59,181 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-04-15 03:08:59,181 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:08:59,184 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-04-15 03:08:59,185 INFO L247 ElimStorePlain]: Needed 61 recursive calls to eliminate 3 variables, input treesize:2276, output treesize:257 [2021-04-15 03:08:59,590 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2021-04-15 03:08:59,752 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-04-15 03:08:59,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:08:59,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:08:59,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:08:59,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918804964] [2021-04-15 03:08:59,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:08:59,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:08:59,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:08:59,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:08:59,985 INFO L87 Difference]: Start difference. First operand 1049 states and 3793 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:09:01,015 WARN L205 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-04-15 03:09:01,392 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2021-04-15 03:09:01,597 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-04-15 03:09:02,272 WARN L205 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-04-15 03:09:02,761 WARN L205 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2021-04-15 03:09:03,233 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2021-04-15 03:09:03,394 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2021-04-15 03:09:03,954 WARN L205 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2021-04-15 03:09:04,414 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 41 [2021-04-15 03:09:04,941 WARN L205 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2021-04-15 03:09:05,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:09:05,112 INFO L93 Difference]: Finished difference Result 1599 states and 5280 transitions. [2021-04-15 03:09:05,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-04-15 03:09:05,113 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:09:05,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:09:05,116 INFO L225 Difference]: With dead ends: 1599 [2021-04-15 03:09:05,116 INFO L226 Difference]: Without dead ends: 1494 [2021-04-15 03:09:05,123 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 5585.5ms TimeCoverageRelationStatistics Valid=209, Invalid=913, Unknown=0, NotChecked=0, Total=1122 [2021-04-15 03:09:05,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2021-04-15 03:09:05,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1047. [2021-04-15 03:09:05,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 3.621414913957935) internal successors, (3788), 1046 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:09:05,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3788 transitions. [2021-04-15 03:09:05,143 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3788 transitions. Word has length 20 [2021-04-15 03:09:05,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:09:05,143 INFO L480 AbstractCegarLoop]: Abstraction has 1047 states and 3788 transitions. [2021-04-15 03:09:05,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:09:05,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3788 transitions. [2021-04-15 03:09:05,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:09:05,145 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:09:05,145 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:09:05,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12403 [2021-04-15 03:09:05,359 INFO L428 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:09:05,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:09:05,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1682759742, now seen corresponding path program 82 times [2021-04-15 03:09:05,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:09:05,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241747964] [2021-04-15 03:09:05,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:09:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:09:05,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:09:05,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241747964] [2021-04-15 03:09:05,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911200796] [2021-04-15 03:09:05,864 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:09:05,925 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 03:09:05,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:09:05,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:09:05,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:09:06,162 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2021-04-15 03:09:06,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:09:06,650 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:06,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:09:06,660 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:06,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:09:06,668 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:06,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:09:06,677 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:06,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:09:06,686 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:06,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:09:06,695 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:06,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:09:06,704 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:06,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,710 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:09:06,712 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:06,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:09:06,722 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:06,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:09:06,731 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:06,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,737 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:09:06,740 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:06,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:09:06,750 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:06,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:09:06,760 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:06,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:09:06,770 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:06,776 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:09:06,780 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:06,785 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:06,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:09:06,788 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:07,044 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-04-15 03:09:07,045 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:09:07,050 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 8 xjuncts. [2021-04-15 03:09:07,050 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:689, output treesize:281 [2021-04-15 03:09:07,345 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-04-15 03:09:09,665 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_809, v_prenex_819, v_prenex_808, ends_with_2, ends_with_6, v_prenex_823, v_prenex_812, v_prenex_811, v_prenex_814, v_prenex_813, v_prenex_827, v_prenex_805, v_prenex_826, v_prenex_815, v_prenex_807, v_prenex_829, v_prenex_806, v_prenex_810], 21=[v_prenex_824]} [2021-04-15 03:09:09,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:09,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2021-04-15 03:09:09,679 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:10,320 WARN L205 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 96 [2021-04-15 03:09:10,321 INFO L628 ElimStorePlain]: treesize reduction 807, result has 26.3 percent of original size [2021-04-15 03:09:10,321 INFO L518 ElimStorePlain]: Eliminatee v_prenex_819 vanished before elimination [2021-04-15 03:09:10,321 INFO L518 ElimStorePlain]: Eliminatee v_prenex_808 vanished before elimination [2021-04-15 03:09:10,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:09:10,329 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:10,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:09:10,337 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:10,576 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-04-15 03:09:10,576 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:09:10,577 INFO L518 ElimStorePlain]: Eliminatee ends_with_6 vanished before elimination [2021-04-15 03:09:10,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:09:10,583 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:10,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:09:10,588 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:10,763 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-04-15 03:09:10,763 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:09:10,763 INFO L518 ElimStorePlain]: Eliminatee v_prenex_812 vanished before elimination [2021-04-15 03:09:10,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:09:10,771 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:11,023 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-04-15 03:09:11,024 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:09:11,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:09:11,033 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:11,260 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-04-15 03:09:11,261 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:09:11,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:09:11,269 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:11,515 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-04-15 03:09:11,516 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:09:11,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:09:11,523 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:11,757 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-04-15 03:09:11,758 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:09:11,758 INFO L518 ElimStorePlain]: Eliminatee v_prenex_805 vanished before elimination [2021-04-15 03:09:11,758 INFO L518 ElimStorePlain]: Eliminatee v_prenex_826 vanished before elimination [2021-04-15 03:09:11,758 INFO L518 ElimStorePlain]: Eliminatee v_prenex_815 vanished before elimination [2021-04-15 03:09:11,758 INFO L518 ElimStorePlain]: Eliminatee v_prenex_807 vanished before elimination [2021-04-15 03:09:11,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:09:11,766 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:12,005 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-04-15 03:09:12,006 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:09:12,006 INFO L518 ElimStorePlain]: Eliminatee v_prenex_806 vanished before elimination [2021-04-15 03:09:12,006 INFO L518 ElimStorePlain]: Eliminatee v_prenex_810 vanished before elimination [2021-04-15 03:09:12,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:09:12,014 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:12,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:09:12,021 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:12,255 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-04-15 03:09:12,256 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:09:12,259 INFO L550 ElimStorePlain]: Start of recursive call 1: 12 dim-0 vars, 19 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-04-15 03:09:12,259 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 31 variables, input treesize:1105, output treesize:209 [2021-04-15 03:09:12,509 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-04-15 03:09:12,686 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-04-15 03:09:12,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:09:12,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:09:12,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:09:12,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856579174] [2021-04-15 03:09:12,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:09:12,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:09:12,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:09:12,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:09:12,936 INFO L87 Difference]: Start difference. First operand 1047 states and 3788 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:09:13,477 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2021-04-15 03:09:13,745 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 35 [2021-04-15 03:09:14,507 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2021-04-15 03:09:15,086 WARN L205 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2021-04-15 03:09:15,382 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2021-04-15 03:09:15,863 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2021-04-15 03:09:16,349 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2021-04-15 03:09:16,700 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2021-04-15 03:09:16,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:09:16,723 INFO L93 Difference]: Finished difference Result 1408 states and 4825 transitions. [2021-04-15 03:09:16,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-04-15 03:09:16,724 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:09:16,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:09:16,725 INFO L225 Difference]: With dead ends: 1408 [2021-04-15 03:09:16,726 INFO L226 Difference]: Without dead ends: 1348 [2021-04-15 03:09:16,726 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 4684.6ms TimeCoverageRelationStatistics Valid=241, Invalid=949, Unknown=0, NotChecked=0, Total=1190 [2021-04-15 03:09:16,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2021-04-15 03:09:16,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1049. [2021-04-15 03:09:16,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 1048 states have (on average 3.62118320610687) internal successors, (3795), 1048 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:09:16,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 3795 transitions. [2021-04-15 03:09:16,738 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 3795 transitions. Word has length 20 [2021-04-15 03:09:16,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:09:16,738 INFO L480 AbstractCegarLoop]: Abstraction has 1049 states and 3795 transitions. [2021-04-15 03:09:16,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:09:16,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 3795 transitions. [2021-04-15 03:09:16,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:09:16,739 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:09:16,739 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:09:16,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13143 [2021-04-15 03:09:16,940 INFO L428 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:09:16,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:09:16,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1969149776, now seen corresponding path program 83 times [2021-04-15 03:09:16,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:09:16,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361406552] [2021-04-15 03:09:16,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:09:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:09:17,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:09:17,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361406552] [2021-04-15 03:09:17,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876475539] [2021-04-15 03:09:17,448 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:09:17,493 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-04-15 03:09:17,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:09:17,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:09:17,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:09:17,688 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2021-04-15 03:09:18,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:09:18,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:09:18,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-04-15 03:09:18,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098853811] [2021-04-15 03:09:18,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-15 03:09:18,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:09:18,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-15 03:09:18,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-04-15 03:09:18,277 INFO L87 Difference]: Start difference. First operand 1049 states and 3795 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:09:18,644 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 31 [2021-04-15 03:09:18,870 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-04-15 03:09:19,053 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2021-04-15 03:09:19,306 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2021-04-15 03:09:19,734 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2021-04-15 03:09:19,930 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2021-04-15 03:09:20,230 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 34 [2021-04-15 03:09:20,576 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2021-04-15 03:09:20,712 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2021-04-15 03:09:20,898 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-04-15 03:09:21,180 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-15 03:09:21,469 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2021-04-15 03:09:21,923 WARN L205 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2021-04-15 03:09:22,127 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-04-15 03:09:22,500 WARN L205 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-04-15 03:09:22,672 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-04-15 03:09:23,108 WARN L205 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2021-04-15 03:09:23,389 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2021-04-15 03:09:23,834 WARN L205 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2021-04-15 03:09:24,010 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2021-04-15 03:09:24,454 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2021-04-15 03:09:24,726 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 45 [2021-04-15 03:09:24,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:09:24,810 INFO L93 Difference]: Finished difference Result 1786 states and 6070 transitions. [2021-04-15 03:09:24,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-04-15 03:09:24,812 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:09:24,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:09:24,815 INFO L225 Difference]: With dead ends: 1786 [2021-04-15 03:09:24,815 INFO L226 Difference]: Without dead ends: 1726 [2021-04-15 03:09:24,815 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 6652.4ms TimeCoverageRelationStatistics Valid=369, Invalid=1611, Unknown=0, NotChecked=0, Total=1980 [2021-04-15 03:09:24,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-04-15 03:09:24,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1078. [2021-04-15 03:09:24,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1077 states have (on average 3.6193129062209843) internal successors, (3898), 1077 states have internal predecessors, (3898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:09:24,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 3898 transitions. [2021-04-15 03:09:24,830 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 3898 transitions. Word has length 20 [2021-04-15 03:09:24,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:09:24,830 INFO L480 AbstractCegarLoop]: Abstraction has 1078 states and 3898 transitions. [2021-04-15 03:09:24,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:09:24,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 3898 transitions. [2021-04-15 03:09:24,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:09:24,831 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:09:24,831 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:09:25,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13351,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:09:25,033 INFO L428 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:09:25,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:09:25,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1115280876, now seen corresponding path program 84 times [2021-04-15 03:09:25,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:09:25,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249416620] [2021-04-15 03:09:25,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:09:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:09:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:09:25,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249416620] [2021-04-15 03:09:25,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010153892] [2021-04-15 03:09:25,495 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:09:25,541 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-04-15 03:09:25,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:09:25,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:09:25,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:09:25,718 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-04-15 03:09:26,114 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-15 03:09:27,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:09:27,241 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:09:27,251 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:09:27,262 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:09:27,271 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,277 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:27,279 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:09:27,289 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,294 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:27,296 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,302 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:27,303 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,310 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:27,311 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:09:27,321 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:09:27,330 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,336 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:27,337 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,342 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:27,343 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,348 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:27,349 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,354 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:27,355 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,360 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:27,362 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,366 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:27,367 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,371 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:27,372 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,376 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:27,377 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,381 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:27,382 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:09:27,393 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,397 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:27,398 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:09:27,405 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:09:27,411 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:09:27,418 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,422 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:27,423 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,426 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:27,427 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:09:27,433 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:09:27,439 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:27,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:09:27,445 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,803 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2021-04-15 03:09:27,804 INFO L628 ElimStorePlain]: treesize reduction 28, result has 88.4 percent of original size [2021-04-15 03:09:27,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:09:27,812 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:09:27,819 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:09:27,827 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:09:27,835 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:09:27,842 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:09:27,848 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:09:27,855 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:27,998 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-04-15 03:09:27,999 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:09:28,001 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-04-15 03:09:28,001 INFO L247 ElimStorePlain]: Needed 38 recursive calls to eliminate 3 variables, input treesize:1282, output treesize:156 [2021-04-15 03:09:28,288 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-04-15 03:09:28,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:09:28,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:09:28,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:09:28,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729127786] [2021-04-15 03:09:28,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:09:28,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:09:28,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:09:28,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:09:28,546 INFO L87 Difference]: Start difference. First operand 1078 states and 3898 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:09:28,748 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2021-04-15 03:09:29,095 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2021-04-15 03:09:29,661 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-04-15 03:09:29,870 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2021-04-15 03:09:30,276 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2021-04-15 03:09:30,503 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2021-04-15 03:09:30,753 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2021-04-15 03:09:31,086 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2021-04-15 03:09:31,448 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-04-15 03:09:31,762 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2021-04-15 03:09:32,149 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2021-04-15 03:09:32,308 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2021-04-15 03:09:32,636 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2021-04-15 03:09:33,100 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-04-15 03:09:33,400 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2021-04-15 03:09:33,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:09:33,474 INFO L93 Difference]: Finished difference Result 1487 states and 5022 transitions. [2021-04-15 03:09:33,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-04-15 03:09:33,474 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:09:33,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:09:33,477 INFO L225 Difference]: With dead ends: 1487 [2021-04-15 03:09:33,477 INFO L226 Difference]: Without dead ends: 1412 [2021-04-15 03:09:33,477 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 5426.6ms TimeCoverageRelationStatistics Valid=344, Invalid=1462, Unknown=0, NotChecked=0, Total=1806 [2021-04-15 03:09:33,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2021-04-15 03:09:33,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1088. [2021-04-15 03:09:33,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 1087 states have (on average 3.6200551977920883) internal successors, (3935), 1087 states have internal predecessors, (3935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:09:33,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 3935 transitions. [2021-04-15 03:09:33,499 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 3935 transitions. Word has length 20 [2021-04-15 03:09:33,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:09:33,499 INFO L480 AbstractCegarLoop]: Abstraction has 1088 states and 3935 transitions. [2021-04-15 03:09:33,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:09:33,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 3935 transitions. [2021-04-15 03:09:33,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:09:33,500 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:09:33,500 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:09:33,700 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13372,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:09:33,701 INFO L428 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:09:33,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:09:33,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1072902300, now seen corresponding path program 85 times [2021-04-15 03:09:33,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:09:33,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350711316] [2021-04-15 03:09:33,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:09:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:09:34,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:09:34,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350711316] [2021-04-15 03:09:34,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899131405] [2021-04-15 03:09:34,216 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:09:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:09:34,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:09:34,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:09:34,455 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2021-04-15 03:09:34,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:34,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:34,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:09:34,925 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:34,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:34,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:34,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:09:34,932 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:34,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:34,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:34,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:09:34,939 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:34,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:34,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:34,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:09:34,945 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:34,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:34,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:34,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:09:34,951 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:34,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:34,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:34,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:09:34,957 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:34,962 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:34,962 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:34,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:09:34,964 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:34,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:34,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:34,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:09:34,970 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:34,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:34,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:34,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:09:34,976 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:34,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:34,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:34,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:09:34,983 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:34,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:34,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:34,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:09:34,990 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:34,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:34,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:34,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:09:34,996 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:35,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:35,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:35,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:09:35,003 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:35,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:35,010 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:35,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:09:35,011 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:35,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:35,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:09:35,017 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:35,183 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-04-15 03:09:35,184 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:09:35,189 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 7 xjuncts. [2021-04-15 03:09:35,189 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:597, output treesize:222 [2021-04-15 03:09:35,561 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2021-04-15 03:09:37,219 INFO L446 ElimStorePlain]: Different costs {1=[ends_with_2, v_prenex_832, v_prenex_843, ends_with_6, v_prenex_845, v_prenex_836, v_prenex_835, v_prenex_839], 15=[v_prenex_833, v_prenex_838]} [2021-04-15 03:09:37,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:37,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:09:37,230 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:37,686 WARN L205 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 81 [2021-04-15 03:09:37,687 INFO L628 ElimStorePlain]: treesize reduction 533, result has 27.4 percent of original size [2021-04-15 03:09:37,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:09:37,695 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:37,878 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-04-15 03:09:37,878 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:09:37,879 INFO L518 ElimStorePlain]: Eliminatee v_prenex_843 vanished before elimination [2021-04-15 03:09:37,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:09:37,886 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:37,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:09:37,893 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:38,068 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-04-15 03:09:38,068 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:09:38,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:09:38,076 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:38,240 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-04-15 03:09:38,240 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:09:38,240 INFO L518 ElimStorePlain]: Eliminatee v_prenex_836 vanished before elimination [2021-04-15 03:09:38,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:09:38,247 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:38,408 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-04-15 03:09:38,409 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:09:38,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:09:38,416 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:38,572 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-04-15 03:09:38,573 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:09:38,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:09:38,580 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:38,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:09:38,587 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:38,737 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-04-15 03:09:38,738 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:09:38,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:09:38,745 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:38,891 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-04-15 03:09:38,892 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:09:38,895 INFO L550 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 10 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-04-15 03:09:38,895 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 19 variables, input treesize:765, output treesize:136 [2021-04-15 03:09:39,059 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-04-15 03:09:39,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:09:39,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:09:39,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:09:39,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82509268] [2021-04-15 03:09:39,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:09:39,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:09:39,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:09:39,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:09:39,320 INFO L87 Difference]: Start difference. First operand 1088 states and 3935 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:09:39,996 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2021-04-15 03:09:40,307 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2021-04-15 03:09:40,705 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2021-04-15 03:09:40,860 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 33 [2021-04-15 03:09:41,075 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2021-04-15 03:09:41,312 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 46 [2021-04-15 03:09:41,446 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 29 [2021-04-15 03:09:41,877 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2021-04-15 03:09:42,229 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2021-04-15 03:09:42,488 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2021-04-15 03:09:42,872 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2021-04-15 03:09:42,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:09:42,891 INFO L93 Difference]: Finished difference Result 1388 states and 4767 transitions. [2021-04-15 03:09:42,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-04-15 03:09:42,892 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:09:42,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:09:42,895 INFO L225 Difference]: With dead ends: 1388 [2021-04-15 03:09:42,895 INFO L226 Difference]: Without dead ends: 1343 [2021-04-15 03:09:42,895 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 4391.0ms TimeCoverageRelationStatistics Valid=280, Invalid=1126, Unknown=0, NotChecked=0, Total=1406 [2021-04-15 03:09:42,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2021-04-15 03:09:42,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1090. [2021-04-15 03:09:42,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 1089 states have (on average 3.6179981634527087) internal successors, (3940), 1089 states have internal predecessors, (3940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:09:42,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 3940 transitions. [2021-04-15 03:09:42,908 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 3940 transitions. Word has length 20 [2021-04-15 03:09:42,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:09:42,908 INFO L480 AbstractCegarLoop]: Abstraction has 1090 states and 3940 transitions. [2021-04-15 03:09:42,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:09:42,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 3940 transitions. [2021-04-15 03:09:42,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:09:42,910 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:09:42,910 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:09:43,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13637,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:09:43,110 INFO L428 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:09:43,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:09:43,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1293529654, now seen corresponding path program 86 times [2021-04-15 03:09:43,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:09:43,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163386232] [2021-04-15 03:09:43,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:09:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:09:43,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:09:43,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163386232] [2021-04-15 03:09:43,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642455589] [2021-04-15 03:09:43,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:09:43,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:09:43,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:09:43,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 37 conjunts are in the unsatisfiable core [2021-04-15 03:09:43,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:09:45,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:09:45,035 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:09:45,047 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:09:45,058 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:09:45,068 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:09:45,080 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,087 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:45,088 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,094 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:45,096 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:09:45,107 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:09:45,119 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,125 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:45,127 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:09:45,138 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,145 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:45,147 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:09:45,157 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:09:45,169 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,175 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:45,177 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,183 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:45,185 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,191 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:09:45,195 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,201 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:45,203 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:09:45,214 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,221 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:45,223 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:09:45,232 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,238 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:45,240 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:09:45,251 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:09:45,261 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:09:45,272 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,278 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:45,280 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,286 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:45,288 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:09:45,298 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:45,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:09:45,308 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,314 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:45,316 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,321 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:45,323 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,329 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:45,330 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,811 WARN L205 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2021-04-15 03:09:45,811 INFO L628 ElimStorePlain]: treesize reduction 27, result has 90.3 percent of original size [2021-04-15 03:09:45,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:09:45,820 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:09:45,828 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:09:45,836 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:09:45,844 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:09:45,852 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:09:45,861 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:09:45,869 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:45,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:09:45,877 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:46,270 WARN L205 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2021-04-15 03:09:46,270 INFO L628 ElimStorePlain]: treesize reduction 2, result has 99.1 percent of original size [2021-04-15 03:09:46,273 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-04-15 03:09:46,273 INFO L247 ElimStorePlain]: Needed 41 recursive calls to eliminate 3 variables, input treesize:1369, output treesize:178 [2021-04-15 03:09:46,597 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2021-04-15 03:09:46,769 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-04-15 03:09:47,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:09:47,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:09:47,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:09:47,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440316316] [2021-04-15 03:09:47,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:09:47,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:09:47,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:09:47,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:09:47,028 INFO L87 Difference]: Start difference. First operand 1090 states and 3940 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:09:47,393 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2021-04-15 03:09:47,664 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-04-15 03:09:48,157 WARN L205 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2021-04-15 03:09:48,436 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-04-15 03:09:48,976 WARN L205 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2021-04-15 03:09:49,347 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2021-04-15 03:09:49,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:09:49,390 INFO L93 Difference]: Finished difference Result 1362 states and 4696 transitions. [2021-04-15 03:09:49,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-15 03:09:49,391 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:09:49,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:09:49,393 INFO L225 Difference]: With dead ends: 1362 [2021-04-15 03:09:49,393 INFO L226 Difference]: Without dead ends: 1347 [2021-04-15 03:09:49,393 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 3087.8ms TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2021-04-15 03:09:49,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2021-04-15 03:09:49,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1088. [2021-04-15 03:09:49,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 1087 states have (on average 3.6182152713891442) internal successors, (3933), 1087 states have internal predecessors, (3933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:09:49,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 3933 transitions. [2021-04-15 03:09:49,410 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 3933 transitions. Word has length 20 [2021-04-15 03:09:49,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:09:49,410 INFO L480 AbstractCegarLoop]: Abstraction has 1088 states and 3933 transitions. [2021-04-15 03:09:49,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:09:49,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 3933 transitions. [2021-04-15 03:09:49,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:09:49,412 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:09:49,412 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:09:49,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13812,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:09:49,629 INFO L428 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:09:49,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:09:49,629 INFO L82 PathProgramCache]: Analyzing trace with hash -218489790, now seen corresponding path program 87 times [2021-04-15 03:09:49,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:09:49,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233541118] [2021-04-15 03:09:49,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:09:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:09:50,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:09:50,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233541118] [2021-04-15 03:09:50,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533315264] [2021-04-15 03:09:50,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:09:50,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-04-15 03:09:50,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:09:50,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:09:50,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:09:50,282 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-04-15 03:09:50,714 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-15 03:09:52,720 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:52,721 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:52,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:52,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:52,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:09:52,731 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:52,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:52,737 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:52,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:09:52,740 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:52,746 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:52,748 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:52,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:52,755 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:52,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:09:52,757 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:52,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:52,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:52,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:09:52,767 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:52,773 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:52,775 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:52,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:52,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:52,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:09:52,783 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:52,789 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:52,790 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:52,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:52,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:52,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:09:52,800 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:52,805 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:52,806 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:52,812 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:52,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:52,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:09:52,816 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:52,822 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:52,823 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:52,829 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:52,830 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:52,835 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:52,837 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:52,842 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:52,844 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:52,849 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:52,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:52,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:09:52,852 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:52,857 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:09:52,859 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:52,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:52,865 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:52,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:09:52,868 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:52,873 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:09:52,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:09:52,876 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:53,061 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2021-04-15 03:09:53,061 INFO L628 ElimStorePlain]: treesize reduction 19, result has 87.9 percent of original size [2021-04-15 03:09:53,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:09:53,066 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:53,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:09:53,071 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:53,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:09:53,075 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:53,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:09:53,080 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:53,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:09:53,084 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-04-15 03:09:53,182 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:09:53,185 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-04-15 03:09:53,185 INFO L247 ElimStorePlain]: Needed 26 recursive calls to eliminate 3 variables, input treesize:781, output treesize:89 [2021-04-15 03:09:53,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:09:53,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:09:53,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:09:53,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881583793] [2021-04-15 03:09:53,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:09:53,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:09:53,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:09:53,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:09:53,416 INFO L87 Difference]: Start difference. First operand 1088 states and 3933 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:09:53,630 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 34 [2021-04-15 03:09:53,881 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-04-15 03:09:54,558 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2021-04-15 03:09:54,801 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-04-15 03:09:55,409 WARN L205 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2021-04-15 03:09:55,807 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2021-04-15 03:09:56,006 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-04-15 03:09:56,754 WARN L205 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2021-04-15 03:09:57,412 WARN L205 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2021-04-15 03:09:57,687 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-04-15 03:09:58,048 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2021-04-15 03:09:58,185 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-04-15 03:09:58,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:09:58,212 INFO L93 Difference]: Finished difference Result 1392 states and 4762 transitions. [2021-04-15 03:09:58,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-04-15 03:09:58,214 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:09:58,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:09:58,216 INFO L225 Difference]: With dead ends: 1392 [2021-04-15 03:09:58,216 INFO L226 Difference]: Without dead ends: 1347 [2021-04-15 03:09:58,216 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 5264.5ms TimeCoverageRelationStatistics Valid=206, Invalid=786, Unknown=0, NotChecked=0, Total=992 [2021-04-15 03:09:58,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2021-04-15 03:09:58,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1094. [2021-04-15 03:09:58,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1093 states have (on average 3.617566331198536) internal successors, (3954), 1093 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:09:58,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 3954 transitions. [2021-04-15 03:09:58,232 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 3954 transitions. Word has length 20 [2021-04-15 03:09:58,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:09:58,232 INFO L480 AbstractCegarLoop]: Abstraction has 1094 states and 3954 transitions. [2021-04-15 03:09:58,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:09:58,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 3954 transitions. [2021-04-15 03:09:58,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:09:58,234 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:09:58,234 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:09:58,435 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14101,92 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:09:58,435 INFO L428 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:09:58,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:09:58,435 INFO L82 PathProgramCache]: Analyzing trace with hash -975516158, now seen corresponding path program 88 times [2021-04-15 03:09:58,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:09:58,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162745582] [2021-04-15 03:09:58,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:09:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:09:58,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:09:58,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162745582] [2021-04-15 03:09:58,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625067414] [2021-04-15 03:09:58,807 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:09:58,854 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 03:09:58,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:09:58,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:09:58,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:09:59,066 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2021-04-15 03:09:59,447 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-04-15 03:10:00,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:10:00,420 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,427 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:00,429 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,435 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:00,437 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:00,449 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,456 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:00,457 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:00,468 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:10:00,480 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:10:00,490 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:00,501 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:10:00,512 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,519 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:00,520 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:10:00,531 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,538 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:00,540 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:00,551 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,558 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:00,559 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,565 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:00,567 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:10:00,578 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,585 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:00,587 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,593 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:00,595 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:00,605 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:10:00,616 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,622 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:00,623 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,629 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:00,631 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,636 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:00,638 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:10:00,649 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:10:00,658 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,664 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:00,666 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,672 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:00,674 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,680 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:00,682 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:00,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:00,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:10:00,691 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:01,134 WARN L205 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-04-15 03:10:01,135 INFO L628 ElimStorePlain]: treesize reduction 31, result has 87.3 percent of original size [2021-04-15 03:10:01,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:10:01,142 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:01,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:10:01,150 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:01,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:10:01,158 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:01,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:10:01,166 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:01,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:10:01,175 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:01,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:10:01,184 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:01,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:10:01,193 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:01,414 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-04-15 03:10:01,415 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:10:01,418 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-04-15 03:10:01,418 INFO L247 ElimStorePlain]: Needed 38 recursive calls to eliminate 3 variables, input treesize:1268, output treesize:162 [2021-04-15 03:10:01,803 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-04-15 03:10:02,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:10:02,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:10:02,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:10:02,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288910546] [2021-04-15 03:10:02,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:10:02,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:10:02,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:10:02,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:10:02,098 INFO L87 Difference]: Start difference. First operand 1094 states and 3954 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:10:02,681 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-04-15 03:10:03,286 WARN L205 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2021-04-15 03:10:03,753 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2021-04-15 03:10:04,215 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-04-15 03:10:04,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:10:04,238 INFO L93 Difference]: Finished difference Result 1272 states and 4430 transitions. [2021-04-15 03:10:04,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-04-15 03:10:04,239 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:10:04,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:10:04,241 INFO L225 Difference]: With dead ends: 1272 [2021-04-15 03:10:04,241 INFO L226 Difference]: Without dead ends: 1242 [2021-04-15 03:10:04,241 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 3136.0ms TimeCoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2021-04-15 03:10:04,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2021-04-15 03:10:04,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1094. [2021-04-15 03:10:04,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1093 states have (on average 3.617566331198536) internal successors, (3954), 1093 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:10:04,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 3954 transitions. [2021-04-15 03:10:04,254 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 3954 transitions. Word has length 20 [2021-04-15 03:10:04,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:10:04,254 INFO L480 AbstractCegarLoop]: Abstraction has 1094 states and 3954 transitions. [2021-04-15 03:10:04,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:10:04,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 3954 transitions. [2021-04-15 03:10:04,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:10:04,256 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:10:04,256 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:10:04,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14475,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:10:04,457 INFO L428 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:10:04,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:10:04,459 INFO L82 PathProgramCache]: Analyzing trace with hash -396413250, now seen corresponding path program 89 times [2021-04-15 03:10:04,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:10:04,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214828106] [2021-04-15 03:10:04,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:10:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:10:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:10:05,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214828106] [2021-04-15 03:10:05,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626866195] [2021-04-15 03:10:05,002 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:10:05,050 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-04-15 03:10:05,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:10:05,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:10:05,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:10:05,300 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-04-15 03:10:05,725 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-04-15 03:10:05,972 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-04-15 03:10:06,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:10:06,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:10:06,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-04-15 03:10:06,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200646315] [2021-04-15 03:10:06,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-15 03:10:06,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:10:06,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-15 03:10:06,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-04-15 03:10:06,339 INFO L87 Difference]: Start difference. First operand 1094 states and 3954 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:10:06,479 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2021-04-15 03:10:06,655 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2021-04-15 03:10:07,059 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2021-04-15 03:10:07,259 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2021-04-15 03:10:07,637 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 38 [2021-04-15 03:10:07,965 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2021-04-15 03:10:08,694 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2021-04-15 03:10:09,045 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2021-04-15 03:10:09,393 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2021-04-15 03:10:09,887 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2021-04-15 03:10:10,123 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2021-04-15 03:10:10,438 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2021-04-15 03:10:10,731 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-04-15 03:10:11,238 WARN L205 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2021-04-15 03:10:11,678 WARN L205 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2021-04-15 03:10:12,075 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-04-15 03:10:12,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:10:12,159 INFO L93 Difference]: Finished difference Result 1762 states and 5770 transitions. [2021-04-15 03:10:12,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-04-15 03:10:12,161 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:10:12,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:10:12,164 INFO L225 Difference]: With dead ends: 1762 [2021-04-15 03:10:12,164 INFO L226 Difference]: Without dead ends: 1672 [2021-04-15 03:10:12,164 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 6231.4ms TimeCoverageRelationStatistics Valid=317, Invalid=1575, Unknown=0, NotChecked=0, Total=1892 [2021-04-15 03:10:12,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2021-04-15 03:10:12,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1108. [2021-04-15 03:10:12,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 1107 states have (on average 3.6205962059620598) internal successors, (4008), 1107 states have internal predecessors, (4008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:10:12,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 4008 transitions. [2021-04-15 03:10:12,180 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 4008 transitions. Word has length 20 [2021-04-15 03:10:12,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:10:12,181 INFO L480 AbstractCegarLoop]: Abstraction has 1108 states and 4008 transitions. [2021-04-15 03:10:12,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:10:12,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 4008 transitions. [2021-04-15 03:10:12,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:10:12,182 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:10:12,182 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:10:12,382 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14644 [2021-04-15 03:10:12,383 INFO L428 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:10:12,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:10:12,383 INFO L82 PathProgramCache]: Analyzing trace with hash 69319048, now seen corresponding path program 90 times [2021-04-15 03:10:12,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:10:12,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600312503] [2021-04-15 03:10:12,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:10:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:10:12,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:10:12,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600312503] [2021-04-15 03:10:12,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207790148] [2021-04-15 03:10:12,854 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:10:12,903 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-04-15 03:10:12,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:10:12,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:10:12,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:10:13,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:10:13,505 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:13,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:13,517 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:13,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:10:13,528 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:13,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:10:13,539 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:13,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:13,549 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:13,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:10:13,561 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:13,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:10:13,574 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:13,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:13,586 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:13,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:10:13,600 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:13,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:10:13,615 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:13,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:13,630 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:13,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:10:13,642 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:13,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:13,655 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:13,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:10:13,666 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:13,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:10:13,676 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:13,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:10:13,689 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:13,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:10:13,701 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:13,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,710 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:10:13,713 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:13,720 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:13,724 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:13,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:10:13,734 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:13,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:10:13,746 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:13,752 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:13,754 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:13,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:10:13,765 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:13,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,773 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:10:13,777 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:13,783 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:13,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:13,785 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:14,448 WARN L205 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2021-04-15 03:10:14,449 INFO L628 ElimStorePlain]: treesize reduction 78, result has 83.0 percent of original size [2021-04-15 03:10:14,453 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 10 xjuncts. [2021-04-15 03:10:14,454 INFO L247 ElimStorePlain]: Needed 26 recursive calls to eliminate 2 variables, input treesize:1171, output treesize:380 [2021-04-15 03:10:15,111 WARN L205 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2021-04-15 03:10:15,462 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-04-15 03:10:17,744 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_852, ends_with_6], 3=[v_prenex_861, v_prenex_850, v_prenex_860, v_prenex_863, v_prenex_862, v_prenex_854, v_prenex_864, v_prenex_856, v_prenex_855, v_prenex_857, v_prenex_849, v_prenex_859], 10=[v_prenex_851, ends_with_10]} [2021-04-15 03:10:17,753 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:17,755 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:17,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:17,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:17,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:17,768 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:17,778 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:17,780 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:17,802 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:17,803 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:17,812 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:17,814 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:17,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:17,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:10:17,827 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:18,440 WARN L205 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 82 [2021-04-15 03:10:18,440 INFO L628 ElimStorePlain]: treesize reduction 656, result has 25.8 percent of original size [2021-04-15 03:10:18,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:10:18,449 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:18,667 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-04-15 03:10:18,668 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:10:18,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:10:18,676 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:18,893 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-04-15 03:10:18,893 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:10:18,894 INFO L518 ElimStorePlain]: Eliminatee v_prenex_850 vanished before elimination [2021-04-15 03:10:18,894 INFO L518 ElimStorePlain]: Eliminatee v_prenex_860 vanished before elimination [2021-04-15 03:10:18,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:10:18,901 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:19,107 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-04-15 03:10:19,107 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:10:19,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:10:19,115 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:19,308 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-04-15 03:10:19,309 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:10:19,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:10:19,315 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:19,472 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-04-15 03:10:19,473 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:10:19,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:10:19,480 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:19,700 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-04-15 03:10:19,701 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:10:19,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:10:19,707 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:19,894 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-04-15 03:10:19,894 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:10:19,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:10:19,904 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:20,110 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-15 03:10:20,110 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:10:20,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:10:20,119 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:20,319 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-04-15 03:10:20,319 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:10:20,319 INFO L518 ElimStorePlain]: Eliminatee v_prenex_849 vanished before elimination [2021-04-15 03:10:20,320 INFO L518 ElimStorePlain]: Eliminatee v_prenex_859 vanished before elimination [2021-04-15 03:10:20,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:10:20,328 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:20,535 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-04-15 03:10:20,536 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:10:20,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:10:20,544 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:20,728 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-04-15 03:10:20,728 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:10:20,732 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 16 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-04-15 03:10:20,732 INFO L247 ElimStorePlain]: Needed 18 recursive calls to eliminate 23 variables, input treesize:1149, output treesize:148 [2021-04-15 03:10:20,935 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-04-15 03:10:21,101 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-04-15 03:10:21,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:10:21,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:10:21,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:10:21,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903495024] [2021-04-15 03:10:21,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:10:21,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:10:21,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:10:21,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:10:21,246 INFO L87 Difference]: Start difference. First operand 1108 states and 4008 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:10:21,908 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2021-04-15 03:10:22,906 WARN L205 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2021-04-15 03:10:23,244 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2021-04-15 03:10:23,805 WARN L205 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2021-04-15 03:10:24,304 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2021-04-15 03:10:24,888 WARN L205 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 36 [2021-04-15 03:10:25,525 WARN L205 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2021-04-15 03:10:25,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:10:25,553 INFO L93 Difference]: Finished difference Result 1427 states and 4917 transitions. [2021-04-15 03:10:25,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-04-15 03:10:25,555 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:10:25,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:10:25,558 INFO L225 Difference]: With dead ends: 1427 [2021-04-15 03:10:25,558 INFO L226 Difference]: Without dead ends: 1382 [2021-04-15 03:10:25,558 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 5279.2ms TimeCoverageRelationStatistics Valid=192, Invalid=864, Unknown=0, NotChecked=0, Total=1056 [2021-04-15 03:10:25,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-04-15 03:10:25,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1116. [2021-04-15 03:10:25,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1115 states have (on average 3.6197309417040358) internal successors, (4036), 1115 states have internal predecessors, (4036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:10:25,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 4036 transitions. [2021-04-15 03:10:25,573 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 4036 transitions. Word has length 20 [2021-04-15 03:10:25,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:10:25,573 INFO L480 AbstractCegarLoop]: Abstraction has 1116 states and 4036 transitions. [2021-04-15 03:10:25,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:10:25,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 4036 transitions. [2021-04-15 03:10:25,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:10:25,574 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:10:25,574 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:10:25,775 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14666 [2021-04-15 03:10:25,775 INFO L428 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:10:25,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:10:25,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1254401028, now seen corresponding path program 91 times [2021-04-15 03:10:25,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:10:25,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939755376] [2021-04-15 03:10:25,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:10:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:10:26,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:10:26,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939755376] [2021-04-15 03:10:26,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314506475] [2021-04-15 03:10:26,222 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:10:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:10:26,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:10:26,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:10:26,549 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2021-04-15 03:10:27,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:10:27,055 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:27,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:10:27,066 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:27,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:27,077 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:27,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:10:27,089 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:27,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:10:27,100 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:27,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:10:27,111 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:27,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:27,122 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:27,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:10:27,133 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:27,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:10:27,144 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:27,151 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:10:27,156 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:27,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:27,167 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:27,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:27,177 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:27,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:27,188 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:27,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:10:27,200 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:27,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:10:27,212 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:27,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:10:27,223 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:27,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,231 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:10:27,234 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:27,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:10:27,245 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:27,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:10:27,256 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:27,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:27,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:10:27,264 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:27,927 WARN L205 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-15 03:10:27,928 INFO L628 ElimStorePlain]: treesize reduction 80, result has 79.2 percent of original size [2021-04-15 03:10:27,933 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 8 xjuncts. [2021-04-15 03:10:27,933 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 2 variables, input treesize:937, output treesize:305 [2021-04-15 03:10:28,294 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-04-15 03:10:32,473 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_870, v_prenex_880, v_prenex_896, ends_with_6, v_prenex_890], 21=[v_prenex_891, v_prenex_885, v_prenex_879], 66=[ends_with_10]} [2021-04-15 03:10:32,487 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:32,489 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:32,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:32,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:32,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:10:32,506 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:32,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:32,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:32,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:10:32,525 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:32,539 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:32,540 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:32,554 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:32,556 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:32,568 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:32,570 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:32,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:32,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:32,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:10:32,588 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:32,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:32,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:10:32,604 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:33,800 WARN L205 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 236 DAG size of output: 110 [2021-04-15 03:10:33,801 INFO L628 ElimStorePlain]: treesize reduction 1350, result has 24.3 percent of original size [2021-04-15 03:10:33,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:10:33,810 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:33,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:10:33,819 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:34,312 WARN L205 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-04-15 03:10:34,312 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:10:34,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:10:34,325 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:34,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:10:34,335 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:34,819 WARN L205 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-04-15 03:10:34,820 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:10:34,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:10:34,832 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:34,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:10:34,843 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:35,345 WARN L205 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-04-15 03:10:35,346 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:10:35,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:10:35,358 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:35,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:10:35,370 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:35,862 WARN L205 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-04-15 03:10:35,862 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:10:35,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:10:35,874 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:35,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:10:35,885 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:36,357 WARN L205 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-04-15 03:10:36,357 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:10:36,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:10:36,366 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:36,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:10:36,377 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:37,162 WARN L205 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 90 [2021-04-15 03:10:37,162 INFO L628 ElimStorePlain]: treesize reduction 38, result has 90.3 percent of original size [2021-04-15 03:10:37,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:10:37,172 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:37,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:10:37,182 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:37,505 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-04-15 03:10:37,505 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:10:37,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:10:37,512 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:37,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:10:37,518 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:37,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:10:37,525 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:37,818 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-04-15 03:10:37,818 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:10:37,822 INFO L550 ElimStorePlain]: Start of recursive call 1: 21 dim-0 vars, 9 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-04-15 03:10:37,822 INFO L247 ElimStorePlain]: Needed 26 recursive calls to eliminate 30 variables, input treesize:2105, output treesize:225 [2021-04-15 03:10:38,116 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-04-15 03:10:38,329 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-04-15 03:10:38,488 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-04-15 03:10:38,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:10:38,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:10:38,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:10:38,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116370629] [2021-04-15 03:10:38,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:10:38,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:10:38,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:10:38,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:10:38,628 INFO L87 Difference]: Start difference. First operand 1116 states and 4036 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:10:39,002 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-04-15 03:10:40,523 WARN L205 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-04-15 03:10:41,172 WARN L205 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2021-04-15 03:10:41,751 WARN L205 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2021-04-15 03:10:42,729 WARN L205 SmtUtils]: Spent 819.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-04-15 03:10:43,189 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2021-04-15 03:10:43,720 WARN L205 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2021-04-15 03:10:43,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:10:43,753 INFO L93 Difference]: Finished difference Result 1575 states and 5337 transitions. [2021-04-15 03:10:43,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-04-15 03:10:43,754 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:10:43,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:10:43,757 INFO L225 Difference]: With dead ends: 1575 [2021-04-15 03:10:43,757 INFO L226 Difference]: Without dead ends: 1500 [2021-04-15 03:10:43,757 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 5724.1ms TimeCoverageRelationStatistics Valid=227, Invalid=829, Unknown=0, NotChecked=0, Total=1056 [2021-04-15 03:10:43,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2021-04-15 03:10:43,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1113. [2021-04-15 03:10:43,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1112 states have (on average 3.6196043165467624) internal successors, (4025), 1112 states have internal predecessors, (4025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:10:43,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 4025 transitions. [2021-04-15 03:10:43,771 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 4025 transitions. Word has length 20 [2021-04-15 03:10:43,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:10:43,771 INFO L480 AbstractCegarLoop]: Abstraction has 1113 states and 4025 transitions. [2021-04-15 03:10:43,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:10:43,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 4025 transitions. [2021-04-15 03:10:43,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:10:43,773 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:10:43,773 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:10:43,973 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14993,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:10:43,973 INFO L428 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:10:43,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:10:43,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1280513328, now seen corresponding path program 92 times [2021-04-15 03:10:43,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:10:43,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856783941] [2021-04-15 03:10:43,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:10:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:10:44,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:10:44,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856783941] [2021-04-15 03:10:44,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764978419] [2021-04-15 03:10:44,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:10:44,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:10:44,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:10:44,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:10:44,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:10:44,762 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2021-04-15 03:10:45,064 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2021-04-15 03:10:46,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:10:46,504 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:10:46,516 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:10:46,530 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:10:46,544 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:10:46,557 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:10:46,570 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,578 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:46,580 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,588 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:46,589 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:10:46,604 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:46,617 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:46,631 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:46,644 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,653 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:46,655 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:10:46,669 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,678 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:46,680 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,689 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:46,692 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,700 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:46,703 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:10:46,719 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,727 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:46,730 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,738 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:46,741 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,749 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:46,752 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,762 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:46,764 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,773 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:46,776 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,785 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:46,787 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,796 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:46,798 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:46,812 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,821 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:46,823 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,833 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:46,835 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,844 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:46,846 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,856 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:46,859 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:10:46,875 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,887 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:10:46,891 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:46,906 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,914 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:46,917 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:46,929 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,938 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:46,940 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,948 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:46,950 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:10:46,963 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:46,976 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:46,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:10:46,988 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:46,996 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:46,998 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:47,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:47,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:47,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:10:47,010 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:47,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:47,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:47,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:10:47,022 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:47,030 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:47,031 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:47,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:47,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:47,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:10:47,045 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:47,053 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:47,054 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:47,061 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:47,064 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:47,071 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:47,073 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:47,080 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:10:47,083 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:47,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:47,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:10:47,093 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:47,731 WARN L205 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2021-04-15 03:10:47,732 INFO L628 ElimStorePlain]: treesize reduction 81, result has 80.5 percent of original size [2021-04-15 03:10:47,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:10:47,738 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:47,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:10:47,744 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:47,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:10:47,750 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:47,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:10:47,758 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:47,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:10:47,767 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:47,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:10:47,777 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:47,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:10:47,788 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:47,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:10:47,798 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:47,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:10:47,808 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:47,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:10:47,818 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:48,132 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-04-15 03:10:48,133 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:10:48,136 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-04-15 03:10:48,136 INFO L247 ElimStorePlain]: Needed 61 recursive calls to eliminate 3 variables, input treesize:2326, output treesize:255 [2021-04-15 03:10:48,701 WARN L205 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-04-15 03:10:48,920 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-04-15 03:10:49,083 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-04-15 03:10:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:10:49,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:10:49,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-04-15 03:10:49,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818274491] [2021-04-15 03:10:49,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-15 03:10:49,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:10:49,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-15 03:10:49,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-04-15 03:10:49,228 INFO L87 Difference]: Start difference. First operand 1113 states and 4025 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:10:49,660 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2021-04-15 03:10:49,915 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-04-15 03:10:50,160 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2021-04-15 03:10:50,452 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2021-04-15 03:10:51,116 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2021-04-15 03:10:51,710 WARN L205 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2021-04-15 03:10:51,959 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2021-04-15 03:10:52,421 WARN L205 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2021-04-15 03:10:52,556 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2021-04-15 03:10:52,938 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2021-04-15 03:10:53,239 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2021-04-15 03:10:53,722 WARN L205 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2021-04-15 03:10:54,244 WARN L205 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2021-04-15 03:10:54,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:10:54,324 INFO L93 Difference]: Finished difference Result 1515 states and 5125 transitions. [2021-04-15 03:10:54,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-04-15 03:10:54,325 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:10:54,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:10:54,328 INFO L225 Difference]: With dead ends: 1515 [2021-04-15 03:10:54,328 INFO L226 Difference]: Without dead ends: 1425 [2021-04-15 03:10:54,328 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 5967.9ms TimeCoverageRelationStatistics Valid=213, Invalid=779, Unknown=0, NotChecked=0, Total=992 [2021-04-15 03:10:54,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2021-04-15 03:10:54,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1112. [2021-04-15 03:10:54,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1111 states have (on average 3.6246624662466247) internal successors, (4027), 1111 states have internal predecessors, (4027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:10:54,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 4027 transitions. [2021-04-15 03:10:54,343 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 4027 transitions. Word has length 20 [2021-04-15 03:10:54,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:10:54,343 INFO L480 AbstractCegarLoop]: Abstraction has 1112 states and 4027 transitions. [2021-04-15 03:10:54,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:10:54,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 4027 transitions. [2021-04-15 03:10:54,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:10:54,345 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:10:54,345 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:10:54,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15259 [2021-04-15 03:10:54,545 INFO L428 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:10:54,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:10:54,546 INFO L82 PathProgramCache]: Analyzing trace with hash -779303424, now seen corresponding path program 93 times [2021-04-15 03:10:54,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:10:54,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328794090] [2021-04-15 03:10:54,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:10:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:10:55,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:10:55,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328794090] [2021-04-15 03:10:55,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694948813] [2021-04-15 03:10:55,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:10:55,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-04-15 03:10:55,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:10:55,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:10:55,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:10:55,557 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2021-04-15 03:10:55,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:55,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:55,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:10:55,944 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:55,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:55,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:55,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:10:55,956 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:55,964 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:55,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:55,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:10:55,968 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:55,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:55,977 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:55,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:10:55,980 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:55,987 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:10:55,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:10:55,989 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:56,882 WARN L205 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2021-04-15 03:10:56,883 INFO L628 ElimStorePlain]: treesize reduction 477, result has 42.1 percent of original size [2021-04-15 03:10:56,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:10:56,893 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:56,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:10:56,903 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:57,327 WARN L205 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-04-15 03:10:57,328 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:10:57,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:10:57,338 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:57,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:10:57,348 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:57,767 WARN L205 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-04-15 03:10:57,768 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:10:57,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:10:57,778 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:57,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:10:57,788 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:10:58,173 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-04-15 03:10:58,174 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:10:58,180 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-1 vars, End of recursive call: 4 dim-0 vars, and 8 xjuncts. [2021-04-15 03:10:58,180 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 6 variables, input treesize:969, output treesize:321 [2021-04-15 03:10:58,559 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-04-15 03:10:58,862 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-04-15 03:11:00,582 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_912], 6=[ends_with_6], 10=[v_prenex_911], 55=[ends_with_10]} [2021-04-15 03:11:00,595 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:11:00,598 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:00,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:00,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:00,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:11:00,613 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:00,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:00,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:00,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:11:00,628 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:00,637 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:11:00,639 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:00,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:00,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:00,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:11:00,652 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:00,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:00,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:11:00,665 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:01,328 WARN L205 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 78 [2021-04-15 03:11:01,329 INFO L628 ElimStorePlain]: treesize reduction 740, result has 24.3 percent of original size [2021-04-15 03:11:01,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:11:01,338 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:01,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:11:01,347 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:01,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:11:01,356 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:01,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:11:01,364 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:01,594 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-04-15 03:11:01,595 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:11:01,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:11:01,603 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:01,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:11:01,611 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:01,833 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-04-15 03:11:01,834 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:11:01,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:11:01,843 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:01,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:11:01,852 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:01,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:11:01,861 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:01,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:11:01,870 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:02,095 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-04-15 03:11:02,095 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:11:02,099 INFO L550 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 4 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-04-15 03:11:02,099 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 13 variables, input treesize:1189, output treesize:148 [2021-04-15 03:11:02,330 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-04-15 03:11:02,643 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2021-04-15 03:11:02,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:11:02,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:11:02,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:11:02,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299675430] [2021-04-15 03:11:02,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:11:02,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:11:02,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:11:02,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:11:02,804 INFO L87 Difference]: Start difference. First operand 1112 states and 4027 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:11:04,497 WARN L205 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 57 [2021-04-15 03:11:04,906 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2021-04-15 03:11:05,034 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-04-15 03:11:05,552 WARN L205 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2021-04-15 03:11:06,099 WARN L205 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-04-15 03:11:06,571 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2021-04-15 03:11:07,034 WARN L205 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2021-04-15 03:11:07,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:11:07,068 INFO L93 Difference]: Finished difference Result 1492 states and 5077 transitions. [2021-04-15 03:11:07,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-04-15 03:11:07,070 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:11:07,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:11:07,072 INFO L225 Difference]: With dead ends: 1492 [2021-04-15 03:11:07,072 INFO L226 Difference]: Without dead ends: 1432 [2021-04-15 03:11:07,072 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 5094.8ms TimeCoverageRelationStatistics Valid=187, Invalid=805, Unknown=0, NotChecked=0, Total=992 [2021-04-15 03:11:07,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2021-04-15 03:11:07,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1120. [2021-04-15 03:11:07,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 3.623771224307417) internal successors, (4055), 1119 states have internal predecessors, (4055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:11:07,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 4055 transitions. [2021-04-15 03:11:07,089 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 4055 transitions. Word has length 20 [2021-04-15 03:11:07,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:11:07,089 INFO L480 AbstractCegarLoop]: Abstraction has 1120 states and 4055 transitions. [2021-04-15 03:11:07,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:11:07,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 4055 transitions. [2021-04-15 03:11:07,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:11:07,090 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:11:07,090 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:11:07,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15581,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:11:07,291 INFO L428 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:11:07,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:11:07,291 INFO L82 PathProgramCache]: Analyzing trace with hash 405778556, now seen corresponding path program 94 times [2021-04-15 03:11:07,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:11:07,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050588131] [2021-04-15 03:11:07,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:11:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:11:07,525 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2021-04-15 03:11:07,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:11:07,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050588131] [2021-04-15 03:11:07,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356313795] [2021-04-15 03:11:07,893 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:11:07,944 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 03:11:07,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:11:07,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 37 conjunts are in the unsatisfiable core [2021-04-15 03:11:07,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:11:08,301 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2021-04-15 03:11:08,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:11:08,978 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:08,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:08,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:08,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:11:08,994 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:09,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:09,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:09,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:11:09,011 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:09,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:09,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:11:09,024 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:09,942 WARN L205 SmtUtils]: Spent 917.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 106 [2021-04-15 03:11:09,942 INFO L628 ElimStorePlain]: treesize reduction 223, result has 65.9 percent of original size [2021-04-15 03:11:09,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:11:09,954 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:09,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:11:09,965 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:09,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:11:09,977 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:10,414 WARN L205 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-04-15 03:11:10,414 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:11:10,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:11:10,426 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:10,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:11:10,438 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:10,841 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-04-15 03:11:10,842 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:11:10,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:11:10,853 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:10,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:11:10,864 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:10,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:11:10,875 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:11,270 WARN L205 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-04-15 03:11:11,271 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:11:11,294 INFO L550 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 4 dim-1 vars, End of recursive call: 9 dim-0 vars, and 10 xjuncts. [2021-04-15 03:11:11,294 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 13 variables, input treesize:753, output treesize:395 [2021-04-15 03:11:12,003 WARN L205 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 115 [2021-04-15 03:11:16,378 INFO L446 ElimStorePlain]: Different costs {15=[v_prenex_929], 21=[v_prenex_931], 28=[ends_with_10], 36=[ends_with_6]} [2021-04-15 03:11:16,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:11:16,391 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:16,402 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:11:16,404 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:16,414 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:11:16,416 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:16,426 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:11:16,428 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:16,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:16,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:16,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:11:16,441 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:16,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:16,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:16,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:11:16,454 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:16,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:16,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:16,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:11:16,467 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:16,478 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:11:16,479 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:17,798 WARN L205 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 185 DAG size of output: 132 [2021-04-15 03:11:17,799 INFO L628 ElimStorePlain]: treesize reduction 1228, result has 29.5 percent of original size [2021-04-15 03:11:17,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:11:17,811 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:17,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:11:17,823 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:18,346 WARN L205 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-04-15 03:11:18,346 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:11:18,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:11:18,359 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:18,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:11:18,373 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:18,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:11:18,385 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:18,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:11:18,398 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:18,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:11:18,412 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:18,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:11:18,425 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:18,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:11:18,437 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:18,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:11:18,450 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:18,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:11:18,463 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:18,902 WARN L205 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-04-15 03:11:18,903 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:11:18,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:11:18,915 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:18,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:11:18,928 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:18,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:11:18,941 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:18,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:11:18,954 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:18,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:11:18,967 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:18,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:11:18,980 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:18,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:11:18,993 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:19,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:11:19,006 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:19,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:11:19,019 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:19,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:11:19,032 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:19,459 WARN L205 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-04-15 03:11:19,459 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:11:19,479 INFO L550 ElimStorePlain]: Start of recursive call 1: 17 dim-0 vars, 4 dim-1 vars, End of recursive call: and 12 xjuncts. [2021-04-15 03:11:19,479 INFO L247 ElimStorePlain]: Needed 30 recursive calls to eliminate 21 variables, input treesize:2060, output treesize:321 [2021-04-15 03:11:19,946 WARN L205 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-04-15 03:11:20,388 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-04-15 03:11:20,716 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2021-04-15 03:11:20,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:11:20,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:11:20,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-04-15 03:11:20,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330190414] [2021-04-15 03:11:20,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-15 03:11:20,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:11:20,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-15 03:11:20,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-04-15 03:11:20,830 INFO L87 Difference]: Start difference. First operand 1120 states and 4055 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:11:21,382 WARN L205 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-04-15 03:11:22,015 WARN L205 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-04-15 03:11:22,643 WARN L205 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2021-04-15 03:11:23,104 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2021-04-15 03:11:23,529 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2021-04-15 03:11:24,712 WARN L205 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-04-15 03:11:24,885 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2021-04-15 03:11:25,167 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-04-15 03:11:25,945 WARN L205 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2021-04-15 03:11:26,554 WARN L205 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2021-04-15 03:11:27,376 WARN L205 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 47 [2021-04-15 03:11:27,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:11:27,486 INFO L93 Difference]: Finished difference Result 1476 states and 5050 transitions. [2021-04-15 03:11:27,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-04-15 03:11:27,487 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:11:27,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:11:27,490 INFO L225 Difference]: With dead ends: 1476 [2021-04-15 03:11:27,490 INFO L226 Difference]: Without dead ends: 1461 [2021-04-15 03:11:27,490 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 8283.4ms TimeCoverageRelationStatistics Valid=249, Invalid=681, Unknown=0, NotChecked=0, Total=930 [2021-04-15 03:11:27,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2021-04-15 03:11:27,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1120. [2021-04-15 03:11:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 3.623771224307417) internal successors, (4055), 1119 states have internal predecessors, (4055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:11:27,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 4055 transitions. [2021-04-15 03:11:27,505 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 4055 transitions. Word has length 20 [2021-04-15 03:11:27,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:11:27,505 INFO L480 AbstractCegarLoop]: Abstraction has 1120 states and 4055 transitions. [2021-04-15 03:11:27,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:11:27,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 4055 transitions. [2021-04-15 03:11:27,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:11:27,506 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:11:27,506 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:11:27,707 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15761,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:11:27,707 INFO L428 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:11:27,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:11:27,707 INFO L82 PathProgramCache]: Analyzing trace with hash -534569836, now seen corresponding path program 95 times [2021-04-15 03:11:27,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:11:27,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785147666] [2021-04-15 03:11:27,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:11:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:11:28,048 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2021-04-15 03:11:28,274 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2021-04-15 03:11:28,419 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2021-04-15 03:11:28,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:11:28,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785147666] [2021-04-15 03:11:28,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094751208] [2021-04-15 03:11:28,491 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:11:28,540 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-04-15 03:11:28,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:11:28,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:11:28,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:11:28,810 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2021-04-15 03:11:28,988 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-04-15 03:11:29,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:11:29,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:11:29,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-04-15 03:11:29,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515895960] [2021-04-15 03:11:29,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-15 03:11:29,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:11:29,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-15 03:11:29,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-04-15 03:11:29,571 INFO L87 Difference]: Start difference. First operand 1120 states and 4055 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:11:30,048 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2021-04-15 03:11:30,379 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2021-04-15 03:11:30,985 WARN L205 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2021-04-15 03:11:31,331 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2021-04-15 03:11:31,478 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2021-04-15 03:11:31,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:11:31,672 INFO L93 Difference]: Finished difference Result 1279 states and 4456 transitions. [2021-04-15 03:11:31,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-04-15 03:11:31,674 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:11:31,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:11:31,676 INFO L225 Difference]: With dead ends: 1279 [2021-04-15 03:11:31,676 INFO L226 Difference]: Without dead ends: 1234 [2021-04-15 03:11:31,676 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 2961.5ms TimeCoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2021-04-15 03:11:31,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2021-04-15 03:11:31,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1126. [2021-04-15 03:11:31,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 1125 states have (on average 3.6293333333333333) internal successors, (4083), 1125 states have internal predecessors, (4083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:11:31,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 4083 transitions. [2021-04-15 03:11:31,692 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 4083 transitions. Word has length 20 [2021-04-15 03:11:31,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:11:31,692 INFO L480 AbstractCegarLoop]: Abstraction has 1126 states and 4083 transitions. [2021-04-15 03:11:31,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:11:31,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 4083 transitions. [2021-04-15 03:11:31,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:11:31,694 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:11:31,694 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:11:31,894 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16259,100 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:11:31,894 INFO L428 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:11:31,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:11:31,895 INFO L82 PathProgramCache]: Analyzing trace with hash 892897788, now seen corresponding path program 96 times [2021-04-15 03:11:31,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:11:31,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234332404] [2021-04-15 03:11:31,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:11:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:11:32,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:11:32,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234332404] [2021-04-15 03:11:32,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573863427] [2021-04-15 03:11:32,370 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:11:32,419 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-04-15 03:11:32,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:11:32,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:11:32,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:11:32,708 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2021-04-15 03:11:33,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:11:33,394 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:33,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:11:33,408 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:33,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:11:33,421 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:33,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:11:33,434 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:33,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:11:33,447 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:33,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:11:33,464 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:33,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:11:33,481 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:33,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:11:33,497 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:33,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:11:33,512 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:33,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:11:33,529 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:33,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:11:33,542 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:33,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:11:33,556 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:33,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:11:33,568 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:33,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:11:33,579 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:33,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:11:33,592 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:33,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:11:33,604 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:33,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:11:33,616 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:33,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:11:33,628 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:33,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:11:33,641 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:33,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:33,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:11:33,652 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:34,100 WARN L205 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-15 03:11:34,101 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:11:34,107 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 10 xjuncts. [2021-04-15 03:11:34,108 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 2 variables, input treesize:969, output treesize:400 [2021-04-15 03:11:34,917 WARN L205 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2021-04-15 03:11:37,374 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_961, v_prenex_950, ends_with_10, v_prenex_942, v_prenex_955, v_prenex_944, v_prenex_943, v_prenex_946, v_prenex_945, v_prenex_948, v_prenex_947], 21=[ends_with_2, v_prenex_963, v_prenex_957, v_prenex_949]} [2021-04-15 03:11:37,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:37,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:37,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:11:37,392 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:37,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:37,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:37,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:11:37,425 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:37,440 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:11:37,442 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:37,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:37,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:37,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:11:37,461 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:37,475 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:11:37,477 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:37,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:37,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:37,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:11:37,496 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:37,510 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:11:37,512 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:37,527 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:11:37,529 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:38,417 WARN L205 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 105 [2021-04-15 03:11:38,418 INFO L628 ElimStorePlain]: treesize reduction 1039, result has 25.5 percent of original size [2021-04-15 03:11:38,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:11:38,430 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:38,860 WARN L205 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-04-15 03:11:38,860 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:11:38,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:11:38,868 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:38,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:11:38,876 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:39,164 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-04-15 03:11:39,165 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:11:39,165 INFO L518 ElimStorePlain]: Eliminatee v_prenex_942 vanished before elimination [2021-04-15 03:11:39,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:11:39,177 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:39,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:11:39,187 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:39,562 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-04-15 03:11:39,563 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:11:39,563 INFO L518 ElimStorePlain]: Eliminatee v_prenex_944 vanished before elimination [2021-04-15 03:11:39,563 INFO L518 ElimStorePlain]: Eliminatee v_prenex_943 vanished before elimination [2021-04-15 03:11:39,564 INFO L518 ElimStorePlain]: Eliminatee v_prenex_946 vanished before elimination [2021-04-15 03:11:39,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:11:39,575 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:39,984 WARN L205 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-04-15 03:11:39,985 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:11:39,985 INFO L518 ElimStorePlain]: Eliminatee v_prenex_948 vanished before elimination [2021-04-15 03:11:39,985 INFO L518 ElimStorePlain]: Eliminatee v_prenex_947 vanished before elimination [2021-04-15 03:11:39,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:11:39,993 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:40,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:11:40,002 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:40,268 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-04-15 03:11:40,269 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:11:40,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:11:40,280 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:40,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:11:40,291 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:40,642 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-04-15 03:11:40,642 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:11:40,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:11:40,653 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:40,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:11:40,666 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:41,057 WARN L205 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-04-15 03:11:41,058 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:11:41,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:11:41,065 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:41,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:11:41,072 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:41,312 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-04-15 03:11:41,313 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:11:41,317 INFO L550 ElimStorePlain]: Start of recursive call 1: 17 dim-0 vars, 15 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-04-15 03:11:41,317 INFO L247 ElimStorePlain]: Needed 23 recursive calls to eliminate 32 variables, input treesize:1729, output treesize:225 [2021-04-15 03:11:41,619 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-04-15 03:11:41,882 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-04-15 03:11:42,063 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-04-15 03:11:42,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:11:42,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:11:42,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-04-15 03:11:42,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12686010] [2021-04-15 03:11:42,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-15 03:11:42,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:11:42,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-15 03:11:42,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-04-15 03:11:42,182 INFO L87 Difference]: Start difference. First operand 1126 states and 4083 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:11:42,333 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2021-04-15 03:11:42,595 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2021-04-15 03:11:43,012 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2021-04-15 03:11:43,472 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2021-04-15 03:11:43,723 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 31 [2021-04-15 03:11:44,382 WARN L205 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2021-04-15 03:11:45,159 WARN L205 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2021-04-15 03:11:45,413 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2021-04-15 03:11:46,010 WARN L205 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2021-04-15 03:11:46,238 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2021-04-15 03:11:46,956 WARN L205 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2021-04-15 03:11:47,453 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2021-04-15 03:11:48,106 WARN L205 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2021-04-15 03:11:48,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:11:48,168 INFO L93 Difference]: Finished difference Result 1563 states and 5270 transitions. [2021-04-15 03:11:48,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-04-15 03:11:48,169 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:11:48,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:11:48,172 INFO L225 Difference]: With dead ends: 1563 [2021-04-15 03:11:48,172 INFO L226 Difference]: Without dead ends: 1458 [2021-04-15 03:11:48,172 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 7197.4ms TimeCoverageRelationStatistics Valid=205, Invalid=725, Unknown=0, NotChecked=0, Total=930 [2021-04-15 03:11:48,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2021-04-15 03:11:48,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1136. [2021-04-15 03:11:48,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 3.6343612334801763) internal successors, (4125), 1135 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:11:48,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 4125 transitions. [2021-04-15 03:11:48,187 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 4125 transitions. Word has length 20 [2021-04-15 03:11:48,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:11:48,187 INFO L480 AbstractCegarLoop]: Abstraction has 1136 states and 4125 transitions. [2021-04-15 03:11:48,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:11:48,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 4125 transitions. [2021-04-15 03:11:48,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:11:48,189 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:11:48,189 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:11:48,389 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16277 [2021-04-15 03:11:48,389 INFO L428 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:11:48,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:11:48,390 INFO L82 PathProgramCache]: Analyzing trace with hash 337780176, now seen corresponding path program 97 times [2021-04-15 03:11:48,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:11:48,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130100399] [2021-04-15 03:11:48,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:11:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:11:48,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:11:48,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130100399] [2021-04-15 03:11:48,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616575803] [2021-04-15 03:11:48,902 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:11:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:11:48,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 37 conjunts are in the unsatisfiable core [2021-04-15 03:11:48,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:11:49,212 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2021-04-15 03:11:49,843 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:11:49,845 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:49,853 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:11:49,856 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:49,865 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:49,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:49,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:11:49,872 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:49,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:49,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:49,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:11:49,889 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:49,896 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:11:49,899 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:49,907 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:11:49,909 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:49,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:49,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:49,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:11:49,920 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:49,926 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:11:49,929 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:49,935 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:11:49,937 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:49,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:49,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:49,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:11:49,950 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:49,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:49,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:49,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:11:49,962 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:49,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:49,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:49,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:11:49,975 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:49,981 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:11:49,983 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:49,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:49,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:49,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:11:49,995 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:50,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:50,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:50,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:11:50,008 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:50,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:50,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:50,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:11:50,021 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:50,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:50,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:50,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:11:50,032 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:50,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:50,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:50,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:11:50,045 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:50,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:50,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:50,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:11:50,058 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:50,064 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:11:50,066 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:50,730 WARN L205 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2021-04-15 03:11:50,731 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.7 percent of original size [2021-04-15 03:11:50,738 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 10 xjuncts. [2021-04-15 03:11:50,738 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 2 variables, input treesize:903, output treesize:301 [2021-04-15 03:11:51,309 WARN L205 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2021-04-15 03:11:51,698 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-04-15 03:11:52,105 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-04-15 03:11:53,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:11:53,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:11:53,979 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:54,347 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2021-04-15 03:11:54,348 INFO L628 ElimStorePlain]: treesize reduction 85, result has 61.0 percent of original size [2021-04-15 03:11:54,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:11:54,355 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:54,505 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-04-15 03:11:54,506 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:11:54,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:11:54,514 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:11:54,663 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-04-15 03:11:54,663 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:11:54,666 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-04-15 03:11:54,666 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:251, output treesize:125 [2021-04-15 03:11:54,846 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-04-15 03:11:55,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:11:55,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:11:55,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:11:55,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146737837] [2021-04-15 03:11:55,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:11:55,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:11:55,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:11:55,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:11:55,062 INFO L87 Difference]: Start difference. First operand 1136 states and 4125 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:11:55,567 WARN L205 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2021-04-15 03:11:56,185 WARN L205 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2021-04-15 03:11:56,847 WARN L205 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2021-04-15 03:11:57,500 WARN L205 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2021-04-15 03:11:58,189 WARN L205 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2021-04-15 03:11:58,574 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-04-15 03:11:59,288 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2021-04-15 03:11:59,626 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-04-15 03:12:00,211 WARN L205 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2021-04-15 03:12:00,823 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2021-04-15 03:12:01,617 WARN L205 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2021-04-15 03:12:02,388 WARN L205 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2021-04-15 03:12:03,346 WARN L205 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 91 [2021-04-15 03:12:03,551 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2021-04-15 03:12:03,836 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2021-04-15 03:12:04,731 WARN L205 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 91 [2021-04-15 03:12:06,222 WARN L205 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2021-04-15 03:12:06,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:12:06,230 INFO L93 Difference]: Finished difference Result 1713 states and 5871 transitions. [2021-04-15 03:12:06,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-04-15 03:12:06,231 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:12:06,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:12:06,234 INFO L225 Difference]: With dead ends: 1713 [2021-04-15 03:12:06,234 INFO L226 Difference]: Without dead ends: 1698 [2021-04-15 03:12:06,234 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 11997.1ms TimeCoverageRelationStatistics Valid=308, Invalid=1024, Unknown=0, NotChecked=0, Total=1332 [2021-04-15 03:12:06,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2021-04-15 03:12:06,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1145. [2021-04-15 03:12:06,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 1144 states have (on average 3.637237762237762) internal successors, (4161), 1144 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:12:06,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 4161 transitions. [2021-04-15 03:12:06,248 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 4161 transitions. Word has length 20 [2021-04-15 03:12:06,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:12:06,248 INFO L480 AbstractCegarLoop]: Abstraction has 1145 states and 4161 transitions. [2021-04-15 03:12:06,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:12:06,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 4161 transitions. [2021-04-15 03:12:06,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:12:06,250 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:12:06,250 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:12:06,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16483 [2021-04-15 03:12:06,451 INFO L428 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:12:06,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:12:06,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1832383140, now seen corresponding path program 98 times [2021-04-15 03:12:06,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:12:06,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983062241] [2021-04-15 03:12:06,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:12:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:12:06,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:12:06,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983062241] [2021-04-15 03:12:06,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608261515] [2021-04-15 03:12:06,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:12:07,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:12:07,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:12:07,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:12:07,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:12:07,322 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2021-04-15 03:12:07,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:12:07,822 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:07,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:07,834 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:07,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,842 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:07,845 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:07,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:12:07,858 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:07,865 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:07,870 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:07,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:12:07,882 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:07,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:12:07,895 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:07,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:12:07,908 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:07,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:12:07,921 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:07,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:12:07,933 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:07,940 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:12:07,946 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:07,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:12:07,958 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:07,965 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:07,970 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:07,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:12:07,984 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:07,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:07,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:12:07,995 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:08,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:08,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:08,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:12:08,008 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:08,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:08,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:08,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:08,019 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:08,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:08,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:08,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:12:08,032 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:08,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:08,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:08,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:12:08,043 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:08,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:08,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:08,054 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:08,416 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-04-15 03:12:08,417 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:12:08,424 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 10 xjuncts. [2021-04-15 03:12:08,424 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 2 variables, input treesize:785, output treesize:308 [2021-04-15 03:12:09,051 WARN L205 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2021-04-15 03:12:09,356 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-04-15 03:12:09,680 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-04-15 03:12:09,920 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-04-15 03:12:11,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:11,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:11,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:11,105 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:11,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:11,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:12:11,116 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:11,447 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2021-04-15 03:12:11,448 INFO L628 ElimStorePlain]: treesize reduction 69, result has 59.4 percent of original size [2021-04-15 03:12:11,449 INFO L518 ElimStorePlain]: Eliminatee ends_with_10 vanished before elimination [2021-04-15 03:12:11,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:12:11,457 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:11,587 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-04-15 03:12:11,588 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:12:11,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:12:11,596 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:11,720 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-04-15 03:12:11,721 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:12:11,723 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-04-15 03:12:11,724 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:210, output treesize:92 [2021-04-15 03:12:11,885 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-04-15 03:12:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:12:12,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:12:12,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:12:12,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474317670] [2021-04-15 03:12:12,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:12:12,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:12:12,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:12:12,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:12:12,040 INFO L87 Difference]: Start difference. First operand 1145 states and 4161 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:12:12,282 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2021-04-15 03:12:12,582 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2021-04-15 03:12:12,954 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2021-04-15 03:12:13,295 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-04-15 03:12:13,836 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2021-04-15 03:12:14,078 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-04-15 03:12:14,779 WARN L205 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2021-04-15 03:12:15,047 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2021-04-15 03:12:15,277 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-04-15 03:12:15,752 WARN L205 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 64 [2021-04-15 03:12:15,993 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-04-15 03:12:16,409 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-04-15 03:12:17,163 WARN L205 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 54 [2021-04-15 03:12:17,914 WARN L205 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 80 [2021-04-15 03:12:18,708 WARN L205 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 53 [2021-04-15 03:12:20,019 WARN L205 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2021-04-15 03:12:21,007 WARN L205 SmtUtils]: Spent 920.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 74 [2021-04-15 03:12:21,669 WARN L205 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 75 [2021-04-15 03:12:21,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:12:21,699 INFO L93 Difference]: Finished difference Result 1656 states and 5707 transitions. [2021-04-15 03:12:21,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-04-15 03:12:21,702 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:12:21,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:12:21,704 INFO L225 Difference]: With dead ends: 1656 [2021-04-15 03:12:21,704 INFO L226 Difference]: Without dead ends: 1641 [2021-04-15 03:12:21,704 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 10862.8ms TimeCoverageRelationStatistics Valid=267, Invalid=1139, Unknown=0, NotChecked=0, Total=1406 [2021-04-15 03:12:21,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2021-04-15 03:12:21,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1145. [2021-04-15 03:12:21,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 1144 states have (on average 3.637237762237762) internal successors, (4161), 1144 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:12:21,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 4161 transitions. [2021-04-15 03:12:21,721 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 4161 transitions. Word has length 20 [2021-04-15 03:12:21,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:12:21,721 INFO L480 AbstractCegarLoop]: Abstraction has 1145 states and 4161 transitions. [2021-04-15 03:12:21,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:12:21,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 4161 transitions. [2021-04-15 03:12:21,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:12:21,723 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:12:21,723 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:12:21,924 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16699,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:12:21,924 INFO L428 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:12:21,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:12:21,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1750984084, now seen corresponding path program 99 times [2021-04-15 03:12:21,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:12:21,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425811184] [2021-04-15 03:12:21,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:12:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:12:22,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:12:22,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425811184] [2021-04-15 03:12:22,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398890090] [2021-04-15 03:12:22,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:12:22,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-04-15 03:12:22,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:12:22,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:12:22,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:12:22,711 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2021-04-15 03:12:23,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:12:23,310 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:23,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:12:23,323 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:23,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:12:23,337 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:23,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:23,349 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:23,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:12:23,362 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:23,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:12:23,375 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:23,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:12:23,388 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:23,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:23,400 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:23,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:23,413 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:23,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:12:23,425 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:23,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,433 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:23,436 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:23,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:23,449 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:23,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:12:23,462 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:23,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:12:23,475 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:23,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:23,487 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:23,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:12:23,499 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:23,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:12:23,512 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:23,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:12:23,524 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:23,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:12:23,536 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:23,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:23,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:12:23,547 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:24,110 WARN L205 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-04-15 03:12:24,111 INFO L628 ElimStorePlain]: treesize reduction 55, result has 80.6 percent of original size [2021-04-15 03:12:24,117 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 8 xjuncts. [2021-04-15 03:12:24,118 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 2 variables, input treesize:737, output treesize:229 [2021-04-15 03:12:24,535 WARN L205 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 75 [2021-04-15 03:12:24,870 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-04-15 03:12:25,160 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-04-15 03:12:25,430 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-04-15 03:12:26,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:26,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:26,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:12:26,598 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:26,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:26,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:26,608 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:26,916 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2021-04-15 03:12:26,917 INFO L628 ElimStorePlain]: treesize reduction 57, result has 65.7 percent of original size [2021-04-15 03:12:26,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:12:26,925 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:27,065 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-04-15 03:12:27,066 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:12:27,068 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-04-15 03:12:27,068 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:206, output treesize:105 [2021-04-15 03:12:27,252 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-04-15 03:12:27,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:12:27,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:12:27,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:12:27,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237702237] [2021-04-15 03:12:27,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:12:27,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:12:27,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:12:27,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:12:27,434 INFO L87 Difference]: Start difference. First operand 1145 states and 4161 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:12:27,621 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2021-04-15 03:12:27,867 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2021-04-15 03:12:29,188 WARN L205 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 66 [2021-04-15 03:12:30,111 WARN L205 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2021-04-15 03:12:31,334 WARN L205 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 105 DAG size of output: 81 [2021-04-15 03:12:32,427 WARN L205 SmtUtils]: Spent 975.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2021-04-15 03:12:33,695 WARN L205 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 114 DAG size of output: 89 [2021-04-15 03:12:34,066 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-04-15 03:12:34,927 WARN L205 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 75 [2021-04-15 03:12:35,154 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2021-04-15 03:12:35,927 WARN L205 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 80 [2021-04-15 03:12:35,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:12:35,932 INFO L93 Difference]: Finished difference Result 1728 states and 5856 transitions. [2021-04-15 03:12:35,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-15 03:12:35,934 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:12:35,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:12:35,937 INFO L225 Difference]: With dead ends: 1728 [2021-04-15 03:12:35,937 INFO L226 Difference]: Without dead ends: 1698 [2021-04-15 03:12:35,937 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 9658.7ms TimeCoverageRelationStatistics Valid=174, Invalid=638, Unknown=0, NotChecked=0, Total=812 [2021-04-15 03:12:35,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2021-04-15 03:12:35,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1149. [2021-04-15 03:12:35,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 1148 states have (on average 3.637630662020906) internal successors, (4176), 1148 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:12:35,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 4176 transitions. [2021-04-15 03:12:35,956 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 4176 transitions. Word has length 20 [2021-04-15 03:12:35,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:12:35,956 INFO L480 AbstractCegarLoop]: Abstraction has 1149 states and 4176 transitions. [2021-04-15 03:12:35,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:12:35,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 4176 transitions. [2021-04-15 03:12:35,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:12:35,958 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:12:35,958 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:12:36,158 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16967,104 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:12:36,158 INFO L428 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:12:36,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:12:36,158 INFO L82 PathProgramCache]: Analyzing trace with hash -300458904, now seen corresponding path program 100 times [2021-04-15 03:12:36,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:12:36,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187523361] [2021-04-15 03:12:36,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:12:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:12:36,530 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2021-04-15 03:12:36,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:12:36,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187523361] [2021-04-15 03:12:36,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053234772] [2021-04-15 03:12:36,776 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:12:36,827 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 03:12:36,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:12:36,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-04-15 03:12:36,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:12:37,130 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2021-04-15 03:12:37,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:37,585 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:37,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:12:37,598 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:37,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:12:37,610 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:37,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:37,623 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:37,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:37,634 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:37,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:12:37,647 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:37,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:12:37,662 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:37,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:12:37,675 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:37,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:12:37,687 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:37,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:12:37,699 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:37,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,707 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:12:37,709 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:37,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:12:37,717 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:37,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:12:37,725 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:37,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:12:37,733 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:37,739 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:37,741 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:37,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:12:37,748 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:37,753 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:12:37,756 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:37,760 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:12:37,761 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:37,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:37,769 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:37,773 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:37,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:12:37,775 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:38,245 WARN L205 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2021-04-15 03:12:38,246 INFO L628 ElimStorePlain]: treesize reduction 32, result has 88.6 percent of original size [2021-04-15 03:12:38,252 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 8 xjuncts. [2021-04-15 03:12:38,253 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 2 variables, input treesize:789, output treesize:249 [2021-04-15 03:12:38,610 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-04-15 03:12:39,068 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-04-15 03:12:39,447 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-04-15 03:12:39,724 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-04-15 03:12:41,577 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_991, v_prenex_986, ends_with_6, v_prenex_985, v_prenex_989], 10=[ends_with_10, v_prenex_988]} [2021-04-15 03:12:41,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:41,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:12:41,589 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:41,921 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 55 [2021-04-15 03:12:41,921 INFO L628 ElimStorePlain]: treesize reduction 396, result has 24.6 percent of original size [2021-04-15 03:12:41,921 INFO L518 ElimStorePlain]: Eliminatee v_prenex_986 vanished before elimination [2021-04-15 03:12:41,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:12:41,929 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:42,077 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-04-15 03:12:42,078 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:12:42,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-04-15 03:12:42,086 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:42,237 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-04-15 03:12:42,238 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:12:42,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:12:42,247 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:42,394 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-04-15 03:12:42,394 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:12:42,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-04-15 03:12:42,403 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:42,543 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-04-15 03:12:42,544 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:12:42,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-04-15 03:12:42,552 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:42,682 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-04-15 03:12:42,683 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:12:42,686 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 7 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-04-15 03:12:42,686 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 11 variables, input treesize:535, output treesize:96 [2021-04-15 03:12:42,856 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-04-15 03:12:43,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:12:43,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:12:43,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:12:43,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873673047] [2021-04-15 03:12:43,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:12:43,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:12:43,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:12:43,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:12:43,034 INFO L87 Difference]: Start difference. First operand 1149 states and 4176 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:12:43,257 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 28 [2021-04-15 03:12:43,650 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 34 [2021-04-15 03:12:44,205 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2021-04-15 03:12:44,581 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2021-04-15 03:12:44,888 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2021-04-15 03:12:45,545 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-04-15 03:12:46,396 WARN L205 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 54 [2021-04-15 03:12:47,444 WARN L205 SmtUtils]: Spent 883.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 53 [2021-04-15 03:12:48,369 WARN L205 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 100 [2021-04-15 03:12:49,230 WARN L205 SmtUtils]: Spent 808.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 98 [2021-04-15 03:12:49,632 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-04-15 03:12:49,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:12:49,664 INFO L93 Difference]: Finished difference Result 1631 states and 5614 transitions. [2021-04-15 03:12:49,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-04-15 03:12:49,666 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:12:49,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:12:49,669 INFO L225 Difference]: With dead ends: 1631 [2021-04-15 03:12:49,669 INFO L226 Difference]: Without dead ends: 1616 [2021-04-15 03:12:49,669 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 7894.7ms TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2021-04-15 03:12:49,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2021-04-15 03:12:49,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1147. [2021-04-15 03:12:49,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 3.637870855148342) internal successors, (4169), 1146 states have internal predecessors, (4169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:12:49,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 4169 transitions. [2021-04-15 03:12:49,686 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 4169 transitions. Word has length 20 [2021-04-15 03:12:49,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:12:49,686 INFO L480 AbstractCegarLoop]: Abstraction has 1147 states and 4169 transitions. [2021-04-15 03:12:49,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:12:49,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 4169 transitions. [2021-04-15 03:12:49,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:12:49,688 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:12:49,688 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:12:49,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17221 [2021-04-15 03:12:49,888 INFO L428 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:12:49,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:12:49,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1598031908, now seen corresponding path program 101 times [2021-04-15 03:12:49,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:12:49,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669088571] [2021-04-15 03:12:49,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:12:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:12:50,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:12:50,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669088571] [2021-04-15 03:12:50,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751668060] [2021-04-15 03:12:50,402 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:12:50,453 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 03:12:50,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:12:50,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:12:50,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:12:50,744 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2021-04-15 03:12:50,950 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-04-15 03:12:51,124 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-04-15 03:12:51,276 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-04-15 03:12:51,639 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-04-15 03:12:51,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:12:51,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:12:51,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-04-15 03:12:51,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099109758] [2021-04-15 03:12:51,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-04-15 03:12:51,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:12:51,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-04-15 03:12:51,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-04-15 03:12:51,797 INFO L87 Difference]: Start difference. First operand 1147 states and 4169 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:12:52,996 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2021-04-15 03:12:53,263 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2021-04-15 03:12:53,486 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2021-04-15 03:12:54,194 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-04-15 03:12:54,553 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-04-15 03:12:55,190 WARN L205 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2021-04-15 03:12:55,399 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-04-15 03:12:55,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:12:55,482 INFO L93 Difference]: Finished difference Result 1611 states and 5579 transitions. [2021-04-15 03:12:55,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-04-15 03:12:55,484 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-04-15 03:12:55,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:12:55,487 INFO L225 Difference]: With dead ends: 1611 [2021-04-15 03:12:55,487 INFO L226 Difference]: Without dead ends: 1596 [2021-04-15 03:12:55,487 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 3983.0ms TimeCoverageRelationStatistics Valid=154, Invalid=776, Unknown=0, NotChecked=0, Total=930 [2021-04-15 03:12:55,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2021-04-15 03:12:55,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1146. [2021-04-15 03:12:55,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 3.6366812227074234) internal successors, (4164), 1145 states have internal predecessors, (4164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:12:55,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 4164 transitions. [2021-04-15 03:12:55,504 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 4164 transitions. Word has length 20 [2021-04-15 03:12:55,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:12:55,504 INFO L480 AbstractCegarLoop]: Abstraction has 1146 states and 4164 transitions. [2021-04-15 03:12:55,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:12:55,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 4164 transitions. [2021-04-15 03:12:55,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-15 03:12:55,505 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:12:55,505 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:12:55,707 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17407,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:12:55,708 INFO L428 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 03:12:55,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:12:55,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1863438574, now seen corresponding path program 102 times [2021-04-15 03:12:55,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:12:55,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227550326] [2021-04-15 03:12:55,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:12:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:12:56,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:12:56,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227550326] [2021-04-15 03:12:56,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818645312] [2021-04-15 03:12:56,325 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:12:56,377 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-04-15 03:12:56,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 03:12:56,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-04-15 03:12:56,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 03:12:56,599 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2021-04-15 03:12:57,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:12:57,164 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:57,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,172 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:12:57,174 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:57,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:12:57,189 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:57,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:12:57,203 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:57,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:12:57,218 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:57,225 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:12:57,227 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:57,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:12:57,242 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:57,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:12:57,256 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:57,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:12:57,269 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:57,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:57,282 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:57,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:12:57,296 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:57,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:12:57,310 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:57,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:12:57,323 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:57,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2021-04-15 03:12:57,338 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:57,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-04-15 03:12:57,351 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:57,358 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:12:57,360 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:57,366 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-04-15 03:12:57,369 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:57,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:57,382 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:57,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:57,394 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:57,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-04-15 03:12:57,408 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:57,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:57,421 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:57,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:57,435 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:57,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:57,447 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:57,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 2 [2021-04-15 03:12:57,461 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:57,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:12:57,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:12:57,472 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-04-15 03:12:58,085 WARN L205 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-04-15 03:12:58,086 INFO L628 ElimStorePlain]: treesize reduction 57, result has 81.6 percent of original size [2021-04-15 03:12:58,092 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 8 xjuncts. [2021-04-15 03:12:58,092 INFO L247 ElimStorePlain]: Needed 26 recursive calls to eliminate 2 variables, input treesize:1006, output treesize:253 [2021-04-15 03:12:58,763 WARN L205 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 77 [2021-04-15 03:12:59,159 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-04-15 03:13:01,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:13:01,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:13:01,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-04-15 03:13:01,114 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 03:13:01,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-04-15 03:13:01,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-04-15 03:13:01,119 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-04-15 03:13:01,515 WARN L205 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-04-15 03:13:01,516 INFO L628 ElimStorePlain]: treesize reduction 82, result has 66.3 percent of original size [2021-04-15 03:13:01,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-04-15 03:13:01,526 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-04-15 03:13:01,750 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-04-15 03:13:01,750 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 03:13:01,753 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-04-15 03:13:01,753 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:287, output treesize:157 [2021-04-15 03:13:02,033 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-04-15 03:13:02,250 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-04-15 03:13:02,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:13:02,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 03:13:02,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-04-15 03:13:02,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045170191] [2021-04-15 03:13:02,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 03:13:02,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:13:02,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 03:13:02,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-04-15 03:13:02,438 INFO L87 Difference]: Start difference. First operand 1146 states and 4164 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:13:02,776 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-04-15 03:13:03,179 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2021-04-15 03:13:03,582 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-04-15 03:13:04,025 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 27 [2021-04-15 03:13:04,391 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-04-15 03:13:04,794 WARN L205 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 Received shutdown request... [2021-04-15 03:13:04,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-04-15 03:13:05,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17428,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 03:13:05,148 WARN L545 AbstractCegarLoop]: Verification canceled [2021-04-15 03:13:05,151 WARN L224 ceAbstractionStarter]: Timeout [2021-04-15 03:13:05,152 INFO L202 PluginConnector]: Adding new model nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 03:13:05 BasicIcfg [2021-04-15 03:13:05,152 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-15 03:13:05,152 INFO L168 Benchmark]: Toolchain (without parser) took 758019.78 ms. Allocated memory was 373.3 MB in the beginning and 994.1 MB in the end (delta: 620.8 MB). Free memory was 353.2 MB in the beginning and 577.1 MB in the end (delta: -223.9 MB). Peak memory consumption was 399.1 MB. Max. memory is 16.0 GB. [2021-04-15 03:13:05,152 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 373.3 MB. Free memory was 354.7 MB in the beginning and 354.6 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 03:13:05,153 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.92 ms. Allocated memory is still 373.3 MB. Free memory was 353.1 MB in the beginning and 351.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 03:13:05,153 INFO L168 Benchmark]: Boogie Preprocessor took 21.59 ms. Allocated memory is still 373.3 MB. Free memory was 351.6 MB in the beginning and 350.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 03:13:05,153 INFO L168 Benchmark]: RCFGBuilder took 604.57 ms. Allocated memory is still 373.3 MB. Free memory was 350.4 MB in the beginning and 340.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.0 GB. [2021-04-15 03:13:05,153 INFO L168 Benchmark]: TraceAbstraction took 757357.01 ms. Allocated memory was 373.3 MB in the beginning and 994.1 MB in the end (delta: 620.8 MB). Free memory was 340.0 MB in the beginning and 577.1 MB in the end (delta: -237.1 MB). Peak memory consumption was 385.8 MB. Max. memory is 16.0 GB. [2021-04-15 03:13:05,153 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 373.3 MB. Free memory was 354.7 MB in the beginning and 354.6 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 28.92 ms. Allocated memory is still 373.3 MB. Free memory was 353.1 MB in the beginning and 351.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 21.59 ms. Allocated memory is still 373.3 MB. Free memory was 351.6 MB in the beginning and 350.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 604.57 ms. Allocated memory is still 373.3 MB. Free memory was 350.4 MB in the beginning and 340.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 757357.01 ms. Allocated memory was 373.3 MB in the beginning and 994.1 MB in the end (delta: 620.8 MB). Free memory was 340.0 MB in the beginning and 577.1 MB in the end (delta: -237.1 MB). Peak memory consumption was 385.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 143]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 143). Cancelled while BasicCegarLoop was constructing difference of abstraction (1146states) and FLOYD_HOARE automaton (currently 14 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 25 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 757249.0ms, OverallIterations: 128, TraceHistogramMax: 1, EmptinessCheckTime: 171.0ms, AutomataDifference: 332473.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 31.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 7932 SDtfs, 13480 SDslu, 50318 SDs, 0 SdLazy, 55217 SolverSat, 4861 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 40045.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4799 GetRequests, 1460 SyntacticMatches, 106 SemanticMatches, 3232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25729 ImplicationChecksByTransitivity, 384797.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1149occurred in iteration=125, InterpolantAutomatonStates: 2357, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1592.5ms AutomataMinimizationTime, 127 MinimizatonAttempts, 37809 StatesRemovedByMinimization, 123 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 653.2ms SsaConstructionTime, 1900.4ms SatisfiabilityAnalysisTime, 394571.6ms InterpolantComputationTime, 4555 NumberOfCodeBlocks, 4555 NumberOfCodeBlocksAsserted, 351 NumberOfCheckSat, 4321 ConstructedInterpolants, 132 QuantifiedInterpolants, 176814 SizeOfPredicates, 1554 NumberOfNonLiveVariables, 8792 ConjunctsInSsa, 3933 ConjunctsInUnsatCore, 234 InterpolantComputations, 22 PerfectInterpolantSequences, 18/638 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown