/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/popl20-bad/ring-nondet.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d47b94137d5c7dd60722882962a90fb345e61909-d47b941 [2021-05-03 16:13:58,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-03 16:13:58,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-03 16:13:58,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-03 16:13:58,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-03 16:13:58,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-03 16:13:58,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-03 16:13:58,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-03 16:13:58,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-03 16:13:58,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-03 16:13:58,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-03 16:13:58,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-03 16:13:58,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-03 16:13:58,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-03 16:13:58,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-03 16:13:58,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-03 16:13:58,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-03 16:13:58,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-03 16:13:58,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-03 16:13:58,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-03 16:13:58,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-03 16:13:58,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-03 16:13:58,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-03 16:13:58,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-03 16:13:58,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-03 16:13:58,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-03 16:13:58,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-03 16:13:58,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-03 16:13:58,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-03 16:13:58,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-03 16:13:58,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-03 16:13:58,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-03 16:13:58,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-03 16:13:58,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-03 16:13:58,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-03 16:13:58,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-03 16:13:58,798 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 [2021-05-03 16:13:58,829 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-03 16:13:58,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-03 16:13:58,830 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-03 16:13:58,830 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-03 16:13:58,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-03 16:13:58,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-03 16:13:58,832 INFO L138 SettingsManager]: * Use SBE=true [2021-05-03 16:13:58,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-03 16:13:58,832 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-03 16:13:58,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-03 16:13:58,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-03 16:13:58,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-03 16:13:58,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-03 16:13:58,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-03 16:13:58,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-03 16:13:58,833 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-03 16:13:58,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-03 16:13:58,833 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-03 16:13:58,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-03 16:13:58,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-03 16:13:58,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-03 16:13:58,834 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-03 16:13:58,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-03 16:13:58,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-03 16:13:58,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-03 16:13:58,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-03 16:13:58,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-03 16:13:58,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-03 16:13:58,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-03 16:13:58,835 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-03 16:13:58,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-03 16:13:58,835 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-03 16:13:59,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-03 16:13:59,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-03 16:13:59,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-03 16:13:59,192 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-03 16:13:59,194 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-03 16:13:59,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/ring-nondet.wvr.bpl [2021-05-03 16:13:59,195 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/ring-nondet.wvr.bpl' [2021-05-03 16:13:59,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-03 16:13:59,232 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-03 16:13:59,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-03 16:13:59,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-03 16:13:59,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-03 16:13:59,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 04:13:59" (1/1) ... [2021-05-03 16:13:59,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 04:13:59" (1/1) ... [2021-05-03 16:13:59,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-03 16:13:59,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-03 16:13:59,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-03 16:13:59,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-03 16:13:59,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 04:13:59" (1/1) ... [2021-05-03 16:13:59,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 04:13:59" (1/1) ... [2021-05-03 16:13:59,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 04:13:59" (1/1) ... [2021-05-03 16:13:59,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 04:13:59" (1/1) ... [2021-05-03 16:13:59,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 04:13:59" (1/1) ... [2021-05-03 16:13:59,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 04:13:59" (1/1) ... [2021-05-03 16:13:59,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 04:13:59" (1/1) ... [2021-05-03 16:13:59,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-03 16:13:59,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-03 16:13:59,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-03 16:13:59,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-03 16:13:59,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 04:13:59" (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 [2021-05-03 16:13:59,352 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-05-03 16:13:59,353 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-05-03 16:13:59,353 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-05-03 16:13:59,353 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-05-03 16:13:59,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-05-03 16:13:59,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-05-03 16:13:59,354 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-05-03 16:13:59,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-03 16:13:59,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-03 16:13:59,355 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-05-03 16:13:59,355 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-05-03 16:13:59,356 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-05-03 16:13:59,357 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-03 16:13:59,734 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-03 16:13:59,735 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-03 16:13:59,736 INFO L202 PluginConnector]: Adding new model ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 04:13:59 BoogieIcfgContainer [2021-05-03 16:13:59,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-03 16:13:59,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-03 16:13:59,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-03 16:13:59,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-03 16:13:59,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 04:13:59" (1/2) ... [2021-05-03 16:13:59,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a78f22 and model type ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 04:13:59, skipping insertion in model container [2021-05-03 16:13:59,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 04:13:59" (2/2) ... [2021-05-03 16:13:59,743 INFO L111 eAbstractionObserver]: Analyzing ICFG ring-nondet.wvr.bpl [2021-05-03 16:13:59,748 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-03 16:13:59,748 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-03 16:13:59,751 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-03 16:13:59,752 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-03 16:13:59,781 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-05-03 16:13:59,798 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-05-03 16:13:59,814 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-03 16:13:59,814 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-03 16:13:59,814 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-03 16:13:59,814 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-03 16:13:59,814 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-03 16:13:59,814 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-03 16:13:59,814 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-03 16:13:59,814 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-03 16:13:59,823 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 33 transitions, 90 flow [2021-05-03 16:13:59,854 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 348 states, 346 states have (on average 2.9421965317919074) internal successors, (1018), 347 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:13:59,858 INFO L276 IsEmpty]: Start isEmpty. Operand has 348 states, 346 states have (on average 2.9421965317919074) internal successors, (1018), 347 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:13:59,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-03 16:13:59,869 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:13:59,870 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:13:59,870 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:13:59,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:13:59,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1495535584, now seen corresponding path program 1 times [2021-05-03 16:13:59,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:13:59,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222956501] [2021-05-03 16:13:59,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:13:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:14:00,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 16:14:00,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222956501] [2021-05-03 16:14:00,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 16:14:00,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-03 16:14:00,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268869195] [2021-05-03 16:14:00,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-03 16:14:00,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:14:00,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-03 16:14:00,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 16:14:00,041 INFO L87 Difference]: Start difference. First operand has 348 states, 346 states have (on average 2.9421965317919074) internal successors, (1018), 347 states have internal predecessors, (1018), 0 states have call successors, (0), 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 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 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) [2021-05-03 16:14:00,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:14:00,092 INFO L93 Difference]: Finished difference Result 393 states and 1157 transitions. [2021-05-03 16:14:00,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 16:14:00,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 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 [2021-05-03 16:14:00,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:14:00,116 INFO L225 Difference]: With dead ends: 393 [2021-05-03 16:14:00,116 INFO L226 Difference]: Without dead ends: 393 [2021-05-03 16:14:00,118 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 16:14:00,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-05-03 16:14:00,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2021-05-03 16:14:00,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 2.951530612244898) internal successors, (1157), 392 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:00,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1157 transitions. [2021-05-03 16:14:00,208 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1157 transitions. Word has length 16 [2021-05-03 16:14:00,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:14:00,209 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1157 transitions. [2021-05-03 16:14:00,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 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) [2021-05-03 16:14:00,209 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1157 transitions. [2021-05-03 16:14:00,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-03 16:14:00,218 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:14:00,218 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, 1] [2021-05-03 16:14:00,218 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-03 16:14:00,218 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:14:00,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:14:00,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1760185073, now seen corresponding path program 1 times [2021-05-03 16:14:00,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:14:00,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133249734] [2021-05-03 16:14:00,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:14:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:14:00,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 16:14:00,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133249734] [2021-05-03 16:14:00,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 16:14:00,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-03 16:14:00,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90770183] [2021-05-03 16:14:00,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-03 16:14:00,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:14:00,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-03 16:14:00,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 16:14:00,286 INFO L87 Difference]: Start difference. First operand 393 states and 1157 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:00,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:14:00,309 INFO L93 Difference]: Finished difference Result 442 states and 1303 transitions. [2021-05-03 16:14:00,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 16:14:00,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-05-03 16:14:00,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:14:00,314 INFO L225 Difference]: With dead ends: 442 [2021-05-03 16:14:00,314 INFO L226 Difference]: Without dead ends: 442 [2021-05-03 16:14:00,315 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 16:14:00,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-05-03 16:14:00,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2021-05-03 16:14:00,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 2.9546485260770976) internal successors, (1303), 441 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:00,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1303 transitions. [2021-05-03 16:14:00,350 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1303 transitions. Word has length 21 [2021-05-03 16:14:00,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:14:00,350 INFO L480 AbstractCegarLoop]: Abstraction has 442 states and 1303 transitions. [2021-05-03 16:14:00,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:00,350 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1303 transitions. [2021-05-03 16:14:00,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-03 16:14:00,351 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:14:00,352 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, 1, 1, 1, 1, 1, 1] [2021-05-03 16:14:00,352 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-03 16:14:00,352 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:14:00,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:14:00,352 INFO L82 PathProgramCache]: Analyzing trace with hash 992917241, now seen corresponding path program 1 times [2021-05-03 16:14:00,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:14:00,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534405381] [2021-05-03 16:14:00,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:14:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:14:00,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-03 16:14:00,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534405381] [2021-05-03 16:14:00,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 16:14:00,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-03 16:14:00,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355925475] [2021-05-03 16:14:00,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-03 16:14:00,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:14:00,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-03 16:14:00,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 16:14:00,402 INFO L87 Difference]: Start difference. First operand 442 states and 1303 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 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) [2021-05-03 16:14:00,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:14:00,414 INFO L93 Difference]: Finished difference Result 880 states and 2602 transitions. [2021-05-03 16:14:00,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 16:14:00,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 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 26 [2021-05-03 16:14:00,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:14:00,419 INFO L225 Difference]: With dead ends: 880 [2021-05-03 16:14:00,419 INFO L226 Difference]: Without dead ends: 588 [2021-05-03 16:14:00,419 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 16:14:00,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-05-03 16:14:00,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 515. [2021-05-03 16:14:00,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 2.9591439688715955) internal successors, (1521), 514 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:00,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 1521 transitions. [2021-05-03 16:14:00,439 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 1521 transitions. Word has length 26 [2021-05-03 16:14:00,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:14:00,440 INFO L480 AbstractCegarLoop]: Abstraction has 515 states and 1521 transitions. [2021-05-03 16:14:00,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 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) [2021-05-03 16:14:00,440 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 1521 transitions. [2021-05-03 16:14:00,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-03 16:14:00,442 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:14:00,442 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:14:00,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-03 16:14:00,442 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:14:00,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:14:00,443 INFO L82 PathProgramCache]: Analyzing trace with hash -92913957, now seen corresponding path program 1 times [2021-05-03 16:14:00,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:14:00,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177815261] [2021-05-03 16:14:00,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:14:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:14:00,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-03 16:14:00,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177815261] [2021-05-03 16:14:00,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817312405] [2021-05-03 16:14:00,554 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 [2021-05-03 16:14:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:14:00,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-03 16:14:00,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:14:00,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-03 16:14:00,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:14:00,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-05-03 16:14:00,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877555877] [2021-05-03 16:14:00,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-03 16:14:00,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:14:00,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-03 16:14:00,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-03 16:14:00,812 INFO L87 Difference]: Start difference. First operand 515 states and 1521 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:00,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:14:00,852 INFO L93 Difference]: Finished difference Result 1006 states and 2982 transitions. [2021-05-03 16:14:00,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-03 16:14:00,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 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 28 [2021-05-03 16:14:00,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:14:00,858 INFO L225 Difference]: With dead ends: 1006 [2021-05-03 16:14:00,858 INFO L226 Difference]: Without dead ends: 648 [2021-05-03 16:14:00,858 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 36.8ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-05-03 16:14:00,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-05-03 16:14:00,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 470. [2021-05-03 16:14:00,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 2.9658848614072495) internal successors, (1391), 469 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:00,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1391 transitions. [2021-05-03 16:14:00,880 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1391 transitions. Word has length 28 [2021-05-03 16:14:00,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:14:00,880 INFO L480 AbstractCegarLoop]: Abstraction has 470 states and 1391 transitions. [2021-05-03 16:14:00,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:00,880 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1391 transitions. [2021-05-03 16:14:00,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-03 16:14:00,882 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:14:00,882 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:14:01,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 16:14:01,097 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:14:01,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:14:01,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1822406947, now seen corresponding path program 2 times [2021-05-03 16:14:01,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:14:01,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790622810] [2021-05-03 16:14:01,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:14:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:14:01,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-03 16:14:01,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790622810] [2021-05-03 16:14:01,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 16:14:01,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-03 16:14:01,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529192772] [2021-05-03 16:14:01,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-03 16:14:01,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:14:01,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-03 16:14:01,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 16:14:01,142 INFO L87 Difference]: Start difference. First operand 470 states and 1391 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 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) [2021-05-03 16:14:01,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:14:01,164 INFO L93 Difference]: Finished difference Result 516 states and 1505 transitions. [2021-05-03 16:14:01,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 16:14:01,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 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 28 [2021-05-03 16:14:01,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:14:01,169 INFO L225 Difference]: With dead ends: 516 [2021-05-03 16:14:01,169 INFO L226 Difference]: Without dead ends: 516 [2021-05-03 16:14:01,170 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 16:14:01,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-05-03 16:14:01,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2021-05-03 16:14:01,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 2.9223300970873787) internal successors, (1505), 515 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:01,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1505 transitions. [2021-05-03 16:14:01,187 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1505 transitions. Word has length 28 [2021-05-03 16:14:01,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:14:01,187 INFO L480 AbstractCegarLoop]: Abstraction has 516 states and 1505 transitions. [2021-05-03 16:14:01,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 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) [2021-05-03 16:14:01,187 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1505 transitions. [2021-05-03 16:14:01,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-03 16:14:01,189 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:14:01,189 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:14:01,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-03 16:14:01,190 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:14:01,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:14:01,190 INFO L82 PathProgramCache]: Analyzing trace with hash -121778885, now seen corresponding path program 3 times [2021-05-03 16:14:01,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:14:01,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156674129] [2021-05-03 16:14:01,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:14:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:14:01,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 16:14:01,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156674129] [2021-05-03 16:14:01,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 16:14:01,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-03 16:14:01,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912422622] [2021-05-03 16:14:01,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-03 16:14:01,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:14:01,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-03 16:14:01,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 16:14:01,216 INFO L87 Difference]: Start difference. First operand 516 states and 1505 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 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) [2021-05-03 16:14:01,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:14:01,223 INFO L93 Difference]: Finished difference Result 445 states and 1298 transitions. [2021-05-03 16:14:01,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 16:14:01,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 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 28 [2021-05-03 16:14:01,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:14:01,226 INFO L225 Difference]: With dead ends: 445 [2021-05-03 16:14:01,227 INFO L226 Difference]: Without dead ends: 445 [2021-05-03 16:14:01,227 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 16:14:01,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2021-05-03 16:14:01,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2021-05-03 16:14:01,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 2.9234234234234235) internal successors, (1298), 444 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:01,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1298 transitions. [2021-05-03 16:14:01,242 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1298 transitions. Word has length 28 [2021-05-03 16:14:01,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:14:01,242 INFO L480 AbstractCegarLoop]: Abstraction has 445 states and 1298 transitions. [2021-05-03 16:14:01,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 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) [2021-05-03 16:14:01,242 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1298 transitions. [2021-05-03 16:14:01,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-05-03 16:14:01,244 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:14:01,244 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:14:01,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-03 16:14:01,245 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:14:01,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:14:01,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1629135297, now seen corresponding path program 4 times [2021-05-03 16:14:01,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:14:01,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890538899] [2021-05-03 16:14:01,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:14:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:14:01,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-03 16:14:01,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890538899] [2021-05-03 16:14:01,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019943925] [2021-05-03 16:14:01,289 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 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 [2021-05-03 16:14:01,363 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-03 16:14:01,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:14:01,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-03 16:14:01,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:14:01,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-05-03 16:14:01,674 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:01,685 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:14:01,688 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-05-03 16:14:01,688 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2021-05-03 16:14:01,769 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-03 16:14:01,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:14:01,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-05-03 16:14:01,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477717662] [2021-05-03 16:14:01,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-03 16:14:01,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:14:01,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-03 16:14:01,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-05-03 16:14:01,771 INFO L87 Difference]: Start difference. First operand 445 states and 1298 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:02,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:14:02,262 INFO L93 Difference]: Finished difference Result 1590 states and 4708 transitions. [2021-05-03 16:14:02,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-03 16:14:02,263 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 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 30 [2021-05-03 16:14:02,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:14:02,271 INFO L225 Difference]: With dead ends: 1590 [2021-05-03 16:14:02,271 INFO L226 Difference]: Without dead ends: 1274 [2021-05-03 16:14:02,272 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 368.7ms TimeCoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2021-05-03 16:14:02,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-05-03 16:14:02,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 856. [2021-05-03 16:14:02,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 2.950877192982456) internal successors, (2523), 855 states have internal predecessors, (2523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:02,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 2523 transitions. [2021-05-03 16:14:02,305 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 2523 transitions. Word has length 30 [2021-05-03 16:14:02,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:14:02,306 INFO L480 AbstractCegarLoop]: Abstraction has 856 states and 2523 transitions. [2021-05-03 16:14:02,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:02,306 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 2523 transitions. [2021-05-03 16:14:02,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-03 16:14:02,309 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:14:02,309 INFO L551 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:14:02,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 16:14:02,525 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:14:02,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:14:02,526 INFO L82 PathProgramCache]: Analyzing trace with hash -142320356, now seen corresponding path program 5 times [2021-05-03 16:14:02,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:14:02,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670561658] [2021-05-03 16:14:02,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:14:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:14:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-03 16:14:02,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670561658] [2021-05-03 16:14:02,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763497114] [2021-05-03 16:14:02,695 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 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 [2021-05-03 16:14:02,745 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-05-03 16:14:02,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:14:02,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-03 16:14:02,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:14:02,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-05-03 16:14:02,814 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:02,820 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:14:02,823 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:14:02,823 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:7 [2021-05-03 16:14:02,885 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 11 treesize of output 7 [2021-05-03 16:14:02,887 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:02,889 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:14:02,889 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:14:02,890 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:3 [2021-05-03 16:14:02,915 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-03 16:14:02,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:14:02,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-05-03 16:14:02,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782616685] [2021-05-03 16:14:02,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-03 16:14:02,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:14:02,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-03 16:14:02,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-05-03 16:14:02,918 INFO L87 Difference]: Start difference. First operand 856 states and 2523 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:03,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:14:03,114 INFO L93 Difference]: Finished difference Result 1232 states and 3647 transitions. [2021-05-03 16:14:03,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 16:14:03,115 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 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 37 [2021-05-03 16:14:03,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:14:03,123 INFO L225 Difference]: With dead ends: 1232 [2021-05-03 16:14:03,123 INFO L226 Difference]: Without dead ends: 1232 [2021-05-03 16:14:03,124 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 166.9ms TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-05-03 16:14:03,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2021-05-03 16:14:03,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1129. [2021-05-03 16:14:03,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 1128 states have (on average 2.9601063829787235) internal successors, (3339), 1128 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:03,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 3339 transitions. [2021-05-03 16:14:03,168 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 3339 transitions. Word has length 37 [2021-05-03 16:14:03,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:14:03,169 INFO L480 AbstractCegarLoop]: Abstraction has 1129 states and 3339 transitions. [2021-05-03 16:14:03,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:03,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 3339 transitions. [2021-05-03 16:14:03,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-05-03 16:14:03,174 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:14:03,174 INFO L551 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:14:03,398 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-03 16:14:03,398 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:14:03,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:14:03,399 INFO L82 PathProgramCache]: Analyzing trace with hash 403158122, now seen corresponding path program 6 times [2021-05-03 16:14:03,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:14:03,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708511185] [2021-05-03 16:14:03,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:14:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:14:03,541 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-03 16:14:03,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708511185] [2021-05-03 16:14:03,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731533797] [2021-05-03 16:14:03,542 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 [2021-05-03 16:14:03,593 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-05-03 16:14:03,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:14:03,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-03 16:14:03,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:14:03,777 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 7 treesize of output 3 [2021-05-03 16:14:03,779 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:03,788 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:14:03,789 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-05-03 16:14:03,789 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2021-05-03 16:14:03,841 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-03 16:14:03,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:14:03,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2021-05-03 16:14:03,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115806712] [2021-05-03 16:14:03,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-03 16:14:03,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:14:03,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-03 16:14:03,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-05-03 16:14:03,843 INFO L87 Difference]: Start difference. First operand 1129 states and 3339 transitions. Second operand has 15 states, 15 states have (on average 4.2) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:04,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:14:04,124 INFO L93 Difference]: Finished difference Result 2941 states and 8735 transitions. [2021-05-03 16:14:04,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-03 16:14:04,125 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 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 42 [2021-05-03 16:14:04,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:14:04,136 INFO L225 Difference]: With dead ends: 2941 [2021-05-03 16:14:04,136 INFO L226 Difference]: Without dead ends: 2239 [2021-05-03 16:14:04,136 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 289.7ms TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-05-03 16:14:04,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2239 states. [2021-05-03 16:14:04,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2239 to 1599. [2021-05-03 16:14:04,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1598 states have (on average 2.9981226533166456) internal successors, (4791), 1598 states have internal predecessors, (4791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:04,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 4791 transitions. [2021-05-03 16:14:04,188 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 4791 transitions. Word has length 42 [2021-05-03 16:14:04,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:14:04,189 INFO L480 AbstractCegarLoop]: Abstraction has 1599 states and 4791 transitions. [2021-05-03 16:14:04,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:04,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 4791 transitions. [2021-05-03 16:14:04,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-05-03 16:14:04,195 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:14:04,195 INFO L551 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:14:04,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 16:14:04,409 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:14:04,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:14:04,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1644121514, now seen corresponding path program 7 times [2021-05-03 16:14:04,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:14:04,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727941672] [2021-05-03 16:14:04,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:14:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:14:04,469 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-03 16:14:04,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727941672] [2021-05-03 16:14:04,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398309258] [2021-05-03 16:14:04,469 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 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 [2021-05-03 16:14:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:14:04,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-03 16:14:04,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:14:04,559 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 7 treesize of output 3 [2021-05-03 16:14:04,560 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:04,562 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:14:04,563 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:14:04,563 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:5 [2021-05-03 16:14:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-03 16:14:04,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:14:04,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-05-03 16:14:04,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735221880] [2021-05-03 16:14:04,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-03 16:14:04,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:14:04,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-03 16:14:04,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-05-03 16:14:04,627 INFO L87 Difference]: Start difference. First operand 1599 states and 4791 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:04,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:14:04,667 INFO L93 Difference]: Finished difference Result 2923 states and 8545 transitions. [2021-05-03 16:14:04,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-03 16:14:04,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 42 [2021-05-03 16:14:04,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:14:04,686 INFO L225 Difference]: With dead ends: 2923 [2021-05-03 16:14:04,686 INFO L226 Difference]: Without dead ends: 2893 [2021-05-03 16:14:04,687 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.4ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-05-03 16:14:04,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2021-05-03 16:14:04,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 2309. [2021-05-03 16:14:04,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 2308 states have (on average 3.0108318890814556) internal successors, (6949), 2308 states have internal predecessors, (6949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:04,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 6949 transitions. [2021-05-03 16:14:04,778 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 6949 transitions. Word has length 42 [2021-05-03 16:14:04,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:14:04,778 INFO L480 AbstractCegarLoop]: Abstraction has 2309 states and 6949 transitions. [2021-05-03 16:14:04,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:04,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 6949 transitions. [2021-05-03 16:14:04,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-05-03 16:14:04,786 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:14:04,786 INFO L551 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:14:05,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-03 16:14:05,009 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:14:05,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:14:05,009 INFO L82 PathProgramCache]: Analyzing trace with hash -337432434, now seen corresponding path program 8 times [2021-05-03 16:14:05,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:14:05,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395692104] [2021-05-03 16:14:05,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:14:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:14:05,309 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 16:14:05,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395692104] [2021-05-03 16:14:05,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252772970] [2021-05-03 16:14:05,309 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 [2021-05-03 16:14:05,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-03 16:14:05,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:14:05,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-03 16:14:05,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:14:05,596 INFO L446 ElimStorePlain]: Different costs {0=[q3, v_prenex_3], 1=[v_prenex_1]} [2021-05-03 16:14:05,600 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 7 treesize of output 3 [2021-05-03 16:14:05,602 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:05,662 INFO L628 ElimStorePlain]: treesize reduction 24, result has 75.5 percent of original size [2021-05-03 16:14:05,662 INFO L518 ElimStorePlain]: Eliminatee v_prenex_3 vanished before elimination [2021-05-03 16:14:05,668 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-05-03 16:14:05,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 5 [2021-05-03 16:14:05,669 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:05,694 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:14:05,697 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-05-03 16:14:05,698 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:105, output treesize:63 [2021-05-03 16:14:05,796 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-05-03 16:14:05,796 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 10 [2021-05-03 16:14:05,799 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:05,800 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:14:05,801 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:14:05,801 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:3 [2021-05-03 16:14:05,854 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-03 16:14:05,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:14:05,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 23 [2021-05-03 16:14:05,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121452245] [2021-05-03 16:14:05,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-03 16:14:05,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:14:05,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-03 16:14:05,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-05-03 16:14:05,856 INFO L87 Difference]: Start difference. First operand 2309 states and 6949 transitions. Second operand has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 23 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:12,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:14:12,604 INFO L93 Difference]: Finished difference Result 9995 states and 29796 transitions. [2021-05-03 16:14:12,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2021-05-03 16:14:12,605 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 23 states have internal predecessors, (83), 0 states have call successors, (0), 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 42 [2021-05-03 16:14:12,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:14:12,659 INFO L225 Difference]: With dead ends: 9995 [2021-05-03 16:14:12,660 INFO L226 Difference]: Without dead ends: 8302 [2021-05-03 16:14:12,665 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9630 ImplicationChecksByTransitivity, 5664.2ms TimeCoverageRelationStatistics Valid=4313, Invalid=17739, Unknown=0, NotChecked=0, Total=22052 [2021-05-03 16:14:12,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8302 states. [2021-05-03 16:14:12,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8302 to 4152. [2021-05-03 16:14:12,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4152 states, 4151 states have (on average 3.0320404721753795) internal successors, (12586), 4151 states have internal predecessors, (12586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:12,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4152 states to 4152 states and 12586 transitions. [2021-05-03 16:14:12,867 INFO L78 Accepts]: Start accepts. Automaton has 4152 states and 12586 transitions. Word has length 42 [2021-05-03 16:14:12,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:14:12,869 INFO L480 AbstractCegarLoop]: Abstraction has 4152 states and 12586 transitions. [2021-05-03 16:14:12,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 23 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:12,870 INFO L276 IsEmpty]: Start isEmpty. Operand 4152 states and 12586 transitions. [2021-05-03 16:14:12,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-05-03 16:14:12,882 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:14:12,882 INFO L551 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:14:13,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 16:14:13,097 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:14:13,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:14:13,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1703826358, now seen corresponding path program 9 times [2021-05-03 16:14:13,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:14:13,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142966867] [2021-05-03 16:14:13,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:14:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:14:13,405 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 16:14:13,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142966867] [2021-05-03 16:14:13,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065629605] [2021-05-03 16:14:13,405 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 [2021-05-03 16:14:13,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-05-03 16:14:13,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:14:13,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-03 16:14:13,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:14:13,706 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_8, q3], 1=[v_prenex_6]} [2021-05-03 16:14:13,710 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 7 treesize of output 3 [2021-05-03 16:14:13,712 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:13,758 INFO L628 ElimStorePlain]: treesize reduction 24, result has 75.5 percent of original size [2021-05-03 16:14:13,758 INFO L518 ElimStorePlain]: Eliminatee q3 vanished before elimination [2021-05-03 16:14:13,768 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-05-03 16:14:13,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 5 [2021-05-03 16:14:13,770 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:13,789 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:14:13,790 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-05-03 16:14:13,790 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:105, output treesize:63 [2021-05-03 16:14:13,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:14:13,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2021-05-03 16:14:13,873 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:13,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:14:13,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:14:13,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:14:13,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-05-03 16:14:13,885 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:13,889 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-05-03 16:14:13,889 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 10 [2021-05-03 16:14:13,891 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:13,906 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:14:13,907 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-05-03 16:14:13,907 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:78, output treesize:31 [2021-05-03 16:14:14,006 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-03 16:14:14,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:14:14,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 23 [2021-05-03 16:14:14,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945617409] [2021-05-03 16:14:14,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-03 16:14:14,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:14:14,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-03 16:14:14,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-05-03 16:14:14,008 INFO L87 Difference]: Start difference. First operand 4152 states and 12586 transitions. Second operand has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 23 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:17,728 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2021-05-03 16:14:23,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:14:23,661 INFO L93 Difference]: Finished difference Result 12274 states and 36181 transitions. [2021-05-03 16:14:23,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2021-05-03 16:14:23,661 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 23 states have internal predecessors, (83), 0 states have call successors, (0), 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 42 [2021-05-03 16:14:23,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:14:23,701 INFO L225 Difference]: With dead ends: 12274 [2021-05-03 16:14:23,701 INFO L226 Difference]: Without dead ends: 10618 [2021-05-03 16:14:23,708 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14866 ImplicationChecksByTransitivity, 8382.8ms TimeCoverageRelationStatistics Valid=6263, Invalid=25957, Unknown=0, NotChecked=0, Total=32220 [2021-05-03 16:14:23,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10618 states. [2021-05-03 16:14:23,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10618 to 4255. [2021-05-03 16:14:23,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4255 states, 4254 states have (on average 3.0554771979313586) internal successors, (12998), 4254 states have internal predecessors, (12998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:23,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4255 states to 4255 states and 12998 transitions. [2021-05-03 16:14:23,934 INFO L78 Accepts]: Start accepts. Automaton has 4255 states and 12998 transitions. Word has length 42 [2021-05-03 16:14:23,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:14:23,934 INFO L480 AbstractCegarLoop]: Abstraction has 4255 states and 12998 transitions. [2021-05-03 16:14:23,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 23 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:23,935 INFO L276 IsEmpty]: Start isEmpty. Operand 4255 states and 12998 transitions. [2021-05-03 16:14:23,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-05-03 16:14:23,949 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:14:23,949 INFO L551 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:14:24,164 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 16:14:24,165 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:14:24,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:14:24,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1100727138, now seen corresponding path program 10 times [2021-05-03 16:14:24,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:14:24,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943917154] [2021-05-03 16:14:24,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:14:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:14:24,437 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 16:14:24,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943917154] [2021-05-03 16:14:24,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369462431] [2021-05-03 16:14:24,438 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 [2021-05-03 16:14:24,479 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-03 16:14:24,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:14:24,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-03 16:14:24,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:14:24,605 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 17 treesize of output 13 [2021-05-03 16:14:24,608 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:24,617 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:14:24,618 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:14:24,619 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:31 [2021-05-03 16:14:24,886 INFO L446 ElimStorePlain]: Different costs {0=[q3], 3=[q1]} [2021-05-03 16:14:24,891 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 17 treesize of output 9 [2021-05-03 16:14:24,892 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:24,896 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 17 treesize of output 9 [2021-05-03 16:14:24,898 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:24,901 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 9 treesize of output 5 [2021-05-03 16:14:24,903 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:24,953 INFO L628 ElimStorePlain]: treesize reduction 33, result has 69.2 percent of original size [2021-05-03 16:14:24,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:14:24,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:14:24,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:14:24,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 15 [2021-05-03 16:14:24,963 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:24,967 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-05-03 16:14:24,967 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 12 [2021-05-03 16:14:24,969 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:24,981 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:14:24,982 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-05-03 16:14:24,982 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 2 variables, input treesize:138, output treesize:31 [2021-05-03 16:14:25,187 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 16:14:25,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:14:25,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2021-05-03 16:14:25,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270679850] [2021-05-03 16:14:25,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-03 16:14:25,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:14:25,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-03 16:14:25,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2021-05-03 16:14:25,189 INFO L87 Difference]: Start difference. First operand 4255 states and 12998 transitions. Second operand has 25 states, 25 states have (on average 2.8) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:29,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:14:29,584 INFO L93 Difference]: Finished difference Result 9416 states and 28361 transitions. [2021-05-03 16:14:29,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-03 16:14:29,585 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.8) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 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 42 [2021-05-03 16:14:29,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:14:29,606 INFO L225 Difference]: With dead ends: 9416 [2021-05-03 16:14:29,606 INFO L226 Difference]: Without dead ends: 7804 [2021-05-03 16:14:29,608 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2611 ImplicationChecksByTransitivity, 3804.1ms TimeCoverageRelationStatistics Valid=1179, Invalid=6831, Unknown=0, NotChecked=0, Total=8010 [2021-05-03 16:14:29,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7804 states. [2021-05-03 16:14:29,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7804 to 4572. [2021-05-03 16:14:29,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4572 states, 4571 states have (on average 3.077444760446292) internal successors, (14067), 4571 states have internal predecessors, (14067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:29,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4572 states to 4572 states and 14067 transitions. [2021-05-03 16:14:29,783 INFO L78 Accepts]: Start accepts. Automaton has 4572 states and 14067 transitions. Word has length 42 [2021-05-03 16:14:29,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:14:29,783 INFO L480 AbstractCegarLoop]: Abstraction has 4572 states and 14067 transitions. [2021-05-03 16:14:29,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.8) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:29,783 INFO L276 IsEmpty]: Start isEmpty. Operand 4572 states and 14067 transitions. [2021-05-03 16:14:29,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-05-03 16:14:29,793 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:14:29,793 INFO L551 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:14:30,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-05-03 16:14:30,001 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:14:30,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:14:30,002 INFO L82 PathProgramCache]: Analyzing trace with hash -115202370, now seen corresponding path program 11 times [2021-05-03 16:14:30,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:14:30,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566236864] [2021-05-03 16:14:30,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:14:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:14:30,290 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 16:14:30,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566236864] [2021-05-03 16:14:30,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868615697] [2021-05-03 16:14:30,291 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 [2021-05-03 16:14:30,335 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-05-03 16:14:30,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:14:30,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-03 16:14:30,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:14:30,546 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-05-03 16:14:30,546 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 10 [2021-05-03 16:14:30,547 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:30,549 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:14:30,549 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:14:30,549 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:3 [2021-05-03 16:14:30,603 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-03 16:14:30,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:14:30,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 21 [2021-05-03 16:14:30,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075302748] [2021-05-03 16:14:30,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-03 16:14:30,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:14:30,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-03 16:14:30,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-05-03 16:14:30,605 INFO L87 Difference]: Start difference. First operand 4572 states and 14067 transitions. Second operand has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 21 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:34,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:14:34,586 INFO L93 Difference]: Finished difference Result 11132 states and 33734 transitions. [2021-05-03 16:14:34,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-03 16:14:34,587 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 21 states have internal predecessors, (83), 0 states have call successors, (0), 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 42 [2021-05-03 16:14:34,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:14:34,614 INFO L225 Difference]: With dead ends: 11132 [2021-05-03 16:14:34,614 INFO L226 Difference]: Without dead ends: 9470 [2021-05-03 16:14:34,616 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4954 ImplicationChecksByTransitivity, 3263.8ms TimeCoverageRelationStatistics Valid=2495, Invalid=10615, Unknown=0, NotChecked=0, Total=13110 [2021-05-03 16:14:34,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9470 states. [2021-05-03 16:14:34,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9470 to 4773. [2021-05-03 16:14:34,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4773 states, 4772 states have (on average 3.02745180217938) internal successors, (14447), 4772 states have internal predecessors, (14447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:34,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4773 states to 4773 states and 14447 transitions. [2021-05-03 16:14:34,787 INFO L78 Accepts]: Start accepts. Automaton has 4773 states and 14447 transitions. Word has length 42 [2021-05-03 16:14:34,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:14:34,787 INFO L480 AbstractCegarLoop]: Abstraction has 4773 states and 14447 transitions. [2021-05-03 16:14:34,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 21 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:34,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4773 states and 14447 transitions. [2021-05-03 16:14:34,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-05-03 16:14:34,798 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:14:34,798 INFO L551 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:14:35,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 16:14:35,013 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:14:35,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:14:35,014 INFO L82 PathProgramCache]: Analyzing trace with hash 610965756, now seen corresponding path program 12 times [2021-05-03 16:14:35,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:14:35,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340586804] [2021-05-03 16:14:35,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:14:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:14:35,323 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 16:14:35,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340586804] [2021-05-03 16:14:35,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939592681] [2021-05-03 16:14:35,323 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 [2021-05-03 16:14:35,369 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-05-03 16:14:35,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:14:35,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-03 16:14:35,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:14:35,485 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-05-03 16:14:35,485 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 10 [2021-05-03 16:14:35,488 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:35,489 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:14:35,490 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:14:35,490 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:3 [2021-05-03 16:14:35,550 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-03 16:14:35,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:14:35,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 22 [2021-05-03 16:14:35,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44633477] [2021-05-03 16:14:35,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-03 16:14:35,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:14:35,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-03 16:14:35,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2021-05-03 16:14:35,551 INFO L87 Difference]: Start difference. First operand 4773 states and 14447 transitions. Second operand has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 22 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:39,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:14:39,360 INFO L93 Difference]: Finished difference Result 14388 states and 42827 transitions. [2021-05-03 16:14:39,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-03 16:14:39,361 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 22 states have internal predecessors, (81), 0 states have call successors, (0), 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 44 [2021-05-03 16:14:39,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:14:39,400 INFO L225 Difference]: With dead ends: 14388 [2021-05-03 16:14:39,401 INFO L226 Difference]: Without dead ends: 13848 [2021-05-03 16:14:39,403 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5580 ImplicationChecksByTransitivity, 2806.4ms TimeCoverageRelationStatistics Valid=2530, Invalid=11512, Unknown=0, NotChecked=0, Total=14042 [2021-05-03 16:14:39,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13848 states. [2021-05-03 16:14:39,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13848 to 5949. [2021-05-03 16:14:39,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5949 states, 5948 states have (on average 3.023705447209146) internal successors, (17985), 5948 states have internal predecessors, (17985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:39,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5949 states to 5949 states and 17985 transitions. [2021-05-03 16:14:39,652 INFO L78 Accepts]: Start accepts. Automaton has 5949 states and 17985 transitions. Word has length 44 [2021-05-03 16:14:39,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:14:39,652 INFO L480 AbstractCegarLoop]: Abstraction has 5949 states and 17985 transitions. [2021-05-03 16:14:39,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 22 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:39,652 INFO L276 IsEmpty]: Start isEmpty. Operand 5949 states and 17985 transitions. [2021-05-03 16:14:39,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-05-03 16:14:39,666 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:14:39,666 INFO L551 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:14:39,891 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-03 16:14:39,891 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:14:39,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:14:39,892 INFO L82 PathProgramCache]: Analyzing trace with hash 893511408, now seen corresponding path program 13 times [2021-05-03 16:14:39,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:14:39,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307530954] [2021-05-03 16:14:39,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:14:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:14:40,232 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 16:14:40,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307530954] [2021-05-03 16:14:40,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175086948] [2021-05-03 16:14:40,233 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 [2021-05-03 16:14:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:14:40,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-03 16:14:40,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:14:40,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-05-03 16:14:40,406 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:40,417 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:14:40,418 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:14:40,418 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:31 [2021-05-03 16:14:40,757 INFO L446 ElimStorePlain]: Different costs {0=[q3], 6=[q1]} [2021-05-03 16:14:40,761 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 13 treesize of output 9 [2021-05-03 16:14:40,762 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:40,766 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 21 treesize of output 13 [2021-05-03 16:14:40,768 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:40,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-05-03 16:14:40,773 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:40,819 INFO L628 ElimStorePlain]: treesize reduction 35, result has 67.9 percent of original size [2021-05-03 16:14:40,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:14:40,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:14:40,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:14:40,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 15 [2021-05-03 16:14:40,828 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:40,832 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-05-03 16:14:40,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 13 [2021-05-03 16:14:40,836 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:40,849 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:14:40,850 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-05-03 16:14:40,850 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 2 variables, input treesize:144, output treesize:23 [2021-05-03 16:14:40,930 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-03 16:14:40,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:14:40,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 24 [2021-05-03 16:14:40,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949658950] [2021-05-03 16:14:40,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-03 16:14:40,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:14:40,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-03 16:14:40,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-05-03 16:14:40,932 INFO L87 Difference]: Start difference. First operand 5949 states and 17985 transitions. Second operand has 25 states, 25 states have (on average 3.0) internal successors, (75), 24 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:42,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:14:42,883 INFO L93 Difference]: Finished difference Result 13974 states and 41634 transitions. [2021-05-03 16:14:42,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-03 16:14:42,884 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.0) internal successors, (75), 24 states have internal predecessors, (75), 0 states have call successors, (0), 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 44 [2021-05-03 16:14:42,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:14:42,905 INFO L225 Difference]: With dead ends: 13974 [2021-05-03 16:14:42,905 INFO L226 Difference]: Without dead ends: 11588 [2021-05-03 16:14:42,906 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 1675.4ms TimeCoverageRelationStatistics Valid=626, Invalid=2344, Unknown=0, NotChecked=0, Total=2970 [2021-05-03 16:14:42,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11588 states. [2021-05-03 16:14:43,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11588 to 7127. [2021-05-03 16:14:43,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7127 states, 7126 states have (on average 3.03381981476284) internal successors, (21619), 7126 states have internal predecessors, (21619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:43,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7127 states to 7127 states and 21619 transitions. [2021-05-03 16:14:43,148 INFO L78 Accepts]: Start accepts. Automaton has 7127 states and 21619 transitions. Word has length 44 [2021-05-03 16:14:43,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:14:43,149 INFO L480 AbstractCegarLoop]: Abstraction has 7127 states and 21619 transitions. [2021-05-03 16:14:43,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.0) internal successors, (75), 24 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:43,149 INFO L276 IsEmpty]: Start isEmpty. Operand 7127 states and 21619 transitions. [2021-05-03 16:14:43,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-05-03 16:14:43,167 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:14:43,167 INFO L551 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:14:43,388 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2021-05-03 16:14:43,389 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:14:43,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:14:43,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1942472024, now seen corresponding path program 14 times [2021-05-03 16:14:43,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:14:43,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75175893] [2021-05-03 16:14:43,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:14:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:14:43,418 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-03 16:14:43,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75175893] [2021-05-03 16:14:43,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071489387] [2021-05-03 16:14:43,419 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 [2021-05-03 16:14:43,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-03 16:14:43,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:14:43,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-03 16:14:43,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:14:43,537 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-03 16:14:43,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:14:43,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2021-05-03 16:14:43,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918569712] [2021-05-03 16:14:43,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-03 16:14:43,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:14:43,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-03 16:14:43,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-05-03 16:14:43,538 INFO L87 Difference]: Start difference. First operand 7127 states and 21619 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:43,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:14:43,653 INFO L93 Difference]: Finished difference Result 16221 states and 48694 transitions. [2021-05-03 16:14:43,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-03 16:14:43,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 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 44 [2021-05-03 16:14:43,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:14:43,696 INFO L225 Difference]: With dead ends: 16221 [2021-05-03 16:14:43,696 INFO L226 Difference]: Without dead ends: 16185 [2021-05-03 16:14:43,697 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-05-03 16:14:43,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16185 states. [2021-05-03 16:14:43,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16185 to 13826. [2021-05-03 16:14:44,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13826 states, 13825 states have (on average 3.0733453887884266) internal successors, (42489), 13825 states have internal predecessors, (42489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:44,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13826 states to 13826 states and 42489 transitions. [2021-05-03 16:14:44,067 INFO L78 Accepts]: Start accepts. Automaton has 13826 states and 42489 transitions. Word has length 44 [2021-05-03 16:14:44,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:14:44,067 INFO L480 AbstractCegarLoop]: Abstraction has 13826 states and 42489 transitions. [2021-05-03 16:14:44,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:44,067 INFO L276 IsEmpty]: Start isEmpty. Operand 13826 states and 42489 transitions. [2021-05-03 16:14:44,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-05-03 16:14:44,099 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:14:44,099 INFO L551 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:14:44,322 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 16:14:44,322 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:14:44,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:14:44,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1908147278, now seen corresponding path program 15 times [2021-05-03 16:14:44,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:14:44,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595558301] [2021-05-03 16:14:44,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:14:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:14:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 16:14:44,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595558301] [2021-05-03 16:14:44,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299055234] [2021-05-03 16:14:44,729 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 [2021-05-03 16:14:44,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-05-03 16:14:44,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:14:44,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-03 16:14:44,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:14:44,965 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-05-03 16:14:44,966 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 10 [2021-05-03 16:14:44,967 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:44,969 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:14:44,970 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:14:44,970 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:3 [2021-05-03 16:14:45,038 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-03 16:14:45,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:14:45,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9] total 24 [2021-05-03 16:14:45,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764523455] [2021-05-03 16:14:45,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-03 16:14:45,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:14:45,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-03 16:14:45,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-05-03 16:14:45,040 INFO L87 Difference]: Start difference. First operand 13826 states and 42489 transitions. Second operand has 25 states, 25 states have (on average 3.6) internal successors, (90), 24 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:48,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:14:48,753 INFO L93 Difference]: Finished difference Result 28714 states and 89627 transitions. [2021-05-03 16:14:48,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-03 16:14:48,753 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.6) internal successors, (90), 24 states have internal predecessors, (90), 0 states have call successors, (0), 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 46 [2021-05-03 16:14:48,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:14:48,803 INFO L225 Difference]: With dead ends: 28714 [2021-05-03 16:14:48,803 INFO L226 Difference]: Without dead ends: 22691 [2021-05-03 16:14:48,804 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3565 ImplicationChecksByTransitivity, 2757.8ms TimeCoverageRelationStatistics Valid=1666, Invalid=9046, Unknown=0, NotChecked=0, Total=10712 [2021-05-03 16:14:48,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22691 states. [2021-05-03 16:14:49,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22691 to 7841. [2021-05-03 16:14:49,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7841 states, 7840 states have (on average 3.0378826530612244) internal successors, (23817), 7840 states have internal predecessors, (23817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:49,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 23817 transitions. [2021-05-03 16:14:49,063 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 23817 transitions. Word has length 46 [2021-05-03 16:14:49,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:14:49,063 INFO L480 AbstractCegarLoop]: Abstraction has 7841 states and 23817 transitions. [2021-05-03 16:14:49,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.6) internal successors, (90), 24 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:49,063 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 23817 transitions. [2021-05-03 16:14:49,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-03 16:14:49,082 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:14:49,082 INFO L551 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:14:49,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-05-03 16:14:49,297 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:14:49,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:14:49,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1189246749, now seen corresponding path program 16 times [2021-05-03 16:14:49,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:14:49,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416780805] [2021-05-03 16:14:49,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:14:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:14:49,333 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-03 16:14:49,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416780805] [2021-05-03 16:14:49,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104018312] [2021-05-03 16:14:49,334 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 [2021-05-03 16:14:49,377 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-03 16:14:49,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:14:49,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-03 16:14:49,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:14:49,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:14:49,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-05-03 16:14:49,418 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:49,420 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:14:49,420 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:14:49,420 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:5 [2021-05-03 16:14:49,477 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-03 16:14:49,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:14:49,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 7 [2021-05-03 16:14:49,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130125476] [2021-05-03 16:14:49,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 16:14:49,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:14:49,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 16:14:49,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-05-03 16:14:49,479 INFO L87 Difference]: Start difference. First operand 7841 states and 23817 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:49,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:14:49,578 INFO L93 Difference]: Finished difference Result 14769 states and 44767 transitions. [2021-05-03 16:14:49,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-03 16:14:49,578 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-05-03 16:14:49,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:14:49,615 INFO L225 Difference]: With dead ends: 14769 [2021-05-03 16:14:49,615 INFO L226 Difference]: Without dead ends: 14709 [2021-05-03 16:14:49,616 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 42.4ms TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2021-05-03 16:14:49,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14709 states. [2021-05-03 16:14:49,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14709 to 12822. [2021-05-03 16:14:49,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12822 states, 12821 states have (on average 3.094064425551829) internal successors, (39669), 12821 states have internal predecessors, (39669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:49,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12822 states to 12822 states and 39669 transitions. [2021-05-03 16:14:49,909 INFO L78 Accepts]: Start accepts. Automaton has 12822 states and 39669 transitions. Word has length 49 [2021-05-03 16:14:49,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:14:49,910 INFO L480 AbstractCegarLoop]: Abstraction has 12822 states and 39669 transitions. [2021-05-03 16:14:49,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:14:49,910 INFO L276 IsEmpty]: Start isEmpty. Operand 12822 states and 39669 transitions. [2021-05-03 16:14:49,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-03 16:14:49,940 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:14:49,940 INFO L551 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:14:50,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 16:14:50,157 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:14:50,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:14:50,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1501932003, now seen corresponding path program 17 times [2021-05-03 16:14:50,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:14:50,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522529428] [2021-05-03 16:14:50,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:14:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:14:50,378 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 16:14:50,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522529428] [2021-05-03 16:14:50,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635322490] [2021-05-03 16:14:50,379 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 [2021-05-03 16:14:50,437 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-05-03 16:14:50,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:14:50,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-03 16:14:50,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:14:50,601 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-05-03 16:14:50,601 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-05-03 16:14:50,605 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:50,608 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:14:50,609 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:14:50,609 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:9 [2021-05-03 16:14:50,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-05-03 16:14:50,681 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:14:50,683 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:14:50,684 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:14:50,684 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:3 [2021-05-03 16:14:50,744 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-03 16:14:50,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:14:50,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 25 [2021-05-03 16:14:50,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243497933] [2021-05-03 16:14:50,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-03 16:14:50,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:14:50,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-03 16:14:50,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2021-05-03 16:14:50,746 INFO L87 Difference]: Start difference. First operand 12822 states and 39669 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:15:04,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:15:04,746 INFO L93 Difference]: Finished difference Result 37627 states and 115011 transitions. [2021-05-03 16:15:04,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 253 states. [2021-05-03 16:15:04,746 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 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 49 [2021-05-03 16:15:04,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:15:04,816 INFO L225 Difference]: With dead ends: 37627 [2021-05-03 16:15:04,816 INFO L226 Difference]: Without dead ends: 33862 [2021-05-03 16:15:04,820 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30829 ImplicationChecksByTransitivity, 10846.3ms TimeCoverageRelationStatistics Valid=7799, Invalid=64831, Unknown=0, NotChecked=0, Total=72630 [2021-05-03 16:15:04,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33862 states. [2021-05-03 16:15:05,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33862 to 20702. [2021-05-03 16:15:05,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20702 states, 20701 states have (on average 3.0932322110042993) internal successors, (64033), 20701 states have internal predecessors, (64033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:15:05,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20702 states to 20702 states and 64033 transitions. [2021-05-03 16:15:05,332 INFO L78 Accepts]: Start accepts. Automaton has 20702 states and 64033 transitions. Word has length 49 [2021-05-03 16:15:05,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:15:05,332 INFO L480 AbstractCegarLoop]: Abstraction has 20702 states and 64033 transitions. [2021-05-03 16:15:05,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:15:05,332 INFO L276 IsEmpty]: Start isEmpty. Operand 20702 states and 64033 transitions. [2021-05-03 16:15:05,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-03 16:15:05,377 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:15:05,377 INFO L551 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:15:05,592 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 16:15:05,593 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:15:05,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:15:05,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1750803673, now seen corresponding path program 18 times [2021-05-03 16:15:05,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:15:05,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933812476] [2021-05-03 16:15:05,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:15:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:15:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 16:15:05,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933812476] [2021-05-03 16:15:05,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106607122] [2021-05-03 16:15:05,822 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 [2021-05-03 16:15:05,860 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-05-03 16:15:05,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:15:05,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-03 16:15:05,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:15:06,029 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-05-03 16:15:06,029 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-05-03 16:15:06,031 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:15:06,036 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:15:06,037 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:15:06,037 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:9 [2021-05-03 16:15:06,116 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 11 treesize of output 7 [2021-05-03 16:15:06,117 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:15:06,119 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:15:06,120 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:15:06,120 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:3 [2021-05-03 16:15:06,184 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 27 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-03 16:15:06,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:15:06,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 25 [2021-05-03 16:15:06,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224067918] [2021-05-03 16:15:06,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-03 16:15:06,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:15:06,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-03 16:15:06,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2021-05-03 16:15:06,186 INFO L87 Difference]: Start difference. First operand 20702 states and 64033 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:15:07,234 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 24 [2021-05-03 16:15:15,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:15:15,215 INFO L93 Difference]: Finished difference Result 70701 states and 215537 transitions. [2021-05-03 16:15:15,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2021-05-03 16:15:15,216 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 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 49 [2021-05-03 16:15:15,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:15:15,377 INFO L225 Difference]: With dead ends: 70701 [2021-05-03 16:15:15,377 INFO L226 Difference]: Without dead ends: 63181 [2021-05-03 16:15:15,380 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12219 ImplicationChecksByTransitivity, 6446.1ms TimeCoverageRelationStatistics Valid=3934, Invalid=27572, Unknown=0, NotChecked=0, Total=31506 [2021-05-03 16:15:15,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63181 states. [2021-05-03 16:15:16,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63181 to 32507. [2021-05-03 16:15:16,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32507 states, 32506 states have (on average 3.0753707007936995) internal successors, (99968), 32506 states have internal predecessors, (99968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:15:16,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32507 states to 32507 states and 99968 transitions. [2021-05-03 16:15:16,364 INFO L78 Accepts]: Start accepts. Automaton has 32507 states and 99968 transitions. Word has length 49 [2021-05-03 16:15:16,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:15:16,365 INFO L480 AbstractCegarLoop]: Abstraction has 32507 states and 99968 transitions. [2021-05-03 16:15:16,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:15:16,365 INFO L276 IsEmpty]: Start isEmpty. Operand 32507 states and 99968 transitions. [2021-05-03 16:15:16,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-03 16:15:16,433 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:15:16,433 INFO L551 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:15:16,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 16:15:16,658 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:15:16,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:15:16,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1951689687, now seen corresponding path program 19 times [2021-05-03 16:15:16,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:15:16,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142401845] [2021-05-03 16:15:16,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:15:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:15:16,974 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 16:15:16,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142401845] [2021-05-03 16:15:16,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906847503] [2021-05-03 16:15:16,974 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 [2021-05-03 16:15:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:15:17,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-03 16:15:17,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:15:17,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-05-03 16:15:17,166 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:15:17,177 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:15:17,179 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:15:17,179 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:29 [2021-05-03 16:15:17,735 INFO L446 ElimStorePlain]: Different costs {0=[q3], 1=[v_prenex_11], 3=[q1, v_prenex_9]} [2021-05-03 16:15:17,740 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 21 treesize of output 13 [2021-05-03 16:15:17,741 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:15:17,796 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:15:17,802 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 21 treesize of output 13 [2021-05-03 16:15:17,803 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-05-03 16:15:17,811 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-05-03 16:15:17,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2021-05-03 16:15:17,813 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-05-03 16:15:17,861 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:15:17,869 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-05-03 16:15:17,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 15 [2021-05-03 16:15:17,872 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-05-03 16:15:17,909 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:15:17,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:15:17,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-05-03 16:15:17,919 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-05-03 16:15:17,924 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-05-03 16:15:17,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 15 [2021-05-03 16:15:17,927 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-05-03 16:15:17,965 INFO L628 ElimStorePlain]: treesize reduction 12, result has 71.4 percent of original size [2021-05-03 16:15:17,967 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-05-03 16:15:17,967 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:152, output treesize:28 [2021-05-03 16:15:18,046 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 16:15:18,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:15:18,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2021-05-03 16:15:18,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813511886] [2021-05-03 16:15:18,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-03 16:15:18,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:15:18,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-03 16:15:18,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2021-05-03 16:15:18,049 INFO L87 Difference]: Start difference. First operand 32507 states and 99968 transitions. Second operand has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 30 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:15:19,214 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2021-05-03 16:15:21,382 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2021-05-03 16:15:22,125 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2021-05-03 16:15:22,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:15:22,968 INFO L93 Difference]: Finished difference Result 44733 states and 135770 transitions. [2021-05-03 16:15:22,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-03 16:15:22,969 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 30 states have internal predecessors, (82), 0 states have call successors, (0), 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 49 [2021-05-03 16:15:22,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:15:23,077 INFO L225 Difference]: With dead ends: 44733 [2021-05-03 16:15:23,077 INFO L226 Difference]: Without dead ends: 40959 [2021-05-03 16:15:23,078 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 3674.7ms TimeCoverageRelationStatistics Valid=850, Invalid=4850, Unknown=0, NotChecked=0, Total=5700 [2021-05-03 16:15:23,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40959 states. [2021-05-03 16:15:23,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40959 to 32464. [2021-05-03 16:15:23,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32464 states, 32463 states have (on average 3.0758401872901455) internal successors, (99851), 32463 states have internal predecessors, (99851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:15:23,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32464 states to 32464 states and 99851 transitions. [2021-05-03 16:15:23,864 INFO L78 Accepts]: Start accepts. Automaton has 32464 states and 99851 transitions. Word has length 49 [2021-05-03 16:15:23,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:15:23,864 INFO L480 AbstractCegarLoop]: Abstraction has 32464 states and 99851 transitions. [2021-05-03 16:15:23,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 30 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:15:23,864 INFO L276 IsEmpty]: Start isEmpty. Operand 32464 states and 99851 transitions. [2021-05-03 16:15:23,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-03 16:15:23,916 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:15:23,916 INFO L551 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:15:24,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 16:15:24,117 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:15:24,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:15:24,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1026372651, now seen corresponding path program 20 times [2021-05-03 16:15:24,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:15:24,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502790350] [2021-05-03 16:15:24,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:15:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:15:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-03 16:15:24,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502790350] [2021-05-03 16:15:24,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949083162] [2021-05-03 16:15:24,351 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 [2021-05-03 16:15:24,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-03 16:15:24,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:15:24,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-03 16:15:24,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:15:24,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:15:24,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:15:24,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:15:24,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-05-03 16:15:24,630 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:15:24,635 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:15:24,642 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:15:24,642 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:12 [2021-05-03 16:15:24,740 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 11 treesize of output 7 [2021-05-03 16:15:24,742 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:15:24,744 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:15:24,744 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:15:24,744 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:3 [2021-05-03 16:15:24,804 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-03 16:15:24,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:15:24,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2021-05-03 16:15:24,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076260932] [2021-05-03 16:15:24,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-03 16:15:24,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:15:24,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-03 16:15:24,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2021-05-03 16:15:24,805 INFO L87 Difference]: Start difference. First operand 32464 states and 99851 transitions. Second operand has 25 states, 25 states have (on average 3.72) internal successors, (93), 24 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:15:26,114 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-05-03 16:15:31,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:15:31,175 INFO L93 Difference]: Finished difference Result 56840 states and 173390 transitions. [2021-05-03 16:15:31,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-05-03 16:15:31,176 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.72) internal successors, (93), 24 states have internal predecessors, (93), 0 states have call successors, (0), 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 51 [2021-05-03 16:15:31,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:15:31,291 INFO L225 Difference]: With dead ends: 56840 [2021-05-03 16:15:31,291 INFO L226 Difference]: Without dead ends: 53261 [2021-05-03 16:15:31,292 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7255 ImplicationChecksByTransitivity, 4211.3ms TimeCoverageRelationStatistics Valid=2364, Invalid=17942, Unknown=0, NotChecked=0, Total=20306 [2021-05-03 16:15:31,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53261 states. [2021-05-03 16:15:32,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53261 to 32761. [2021-05-03 16:15:32,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32761 states, 32760 states have (on average 3.078785103785104) internal successors, (100861), 32760 states have internal predecessors, (100861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:15:32,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32761 states to 32761 states and 100861 transitions. [2021-05-03 16:15:32,227 INFO L78 Accepts]: Start accepts. Automaton has 32761 states and 100861 transitions. Word has length 51 [2021-05-03 16:15:32,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:15:32,228 INFO L480 AbstractCegarLoop]: Abstraction has 32761 states and 100861 transitions. [2021-05-03 16:15:32,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.72) internal successors, (93), 24 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:15:32,228 INFO L276 IsEmpty]: Start isEmpty. Operand 32761 states and 100861 transitions. [2021-05-03 16:15:32,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-03 16:15:32,272 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:15:32,272 INFO L551 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:15:32,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2021-05-03 16:15:32,473 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:15:32,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:15:32,474 INFO L82 PathProgramCache]: Analyzing trace with hash -2128297217, now seen corresponding path program 21 times [2021-05-03 16:15:32,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:15:32,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566210098] [2021-05-03 16:15:32,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:15:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:15:32,851 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 16:15:32,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566210098] [2021-05-03 16:15:32,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258588811] [2021-05-03 16:15:32,852 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 [2021-05-03 16:15:32,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-05-03 16:15:32,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:15:32,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-03 16:15:32,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:15:33,073 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-05-03 16:15:33,073 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 10 [2021-05-03 16:15:33,077 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:15:33,083 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:15:33,084 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:15:33,084 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:9 [2021-05-03 16:15:33,361 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 11 treesize of output 7 [2021-05-03 16:15:33,363 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:15:33,365 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:15:33,366 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:15:33,366 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:3 [2021-05-03 16:15:33,426 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-03 16:15:33,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:15:33,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 27 [2021-05-03 16:15:33,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928580126] [2021-05-03 16:15:33,427 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-03 16:15:33,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:15:33,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-03 16:15:33,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2021-05-03 16:15:33,428 INFO L87 Difference]: Start difference. First operand 32761 states and 100861 transitions. Second operand has 28 states, 28 states have (on average 3.5) internal successors, (98), 27 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:15:33,993 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2021-05-03 16:15:36,330 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2021-05-03 16:15:43,829 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-05-03 16:15:45,064 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2021-05-03 16:15:45,673 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2021-05-03 16:15:51,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:15:51,106 INFO L93 Difference]: Finished difference Result 60273 states and 183128 transitions. [2021-05-03 16:15:51,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 253 states. [2021-05-03 16:15:51,107 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.5) internal successors, (98), 27 states have internal predecessors, (98), 0 states have call successors, (0), 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 51 [2021-05-03 16:15:51,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:15:51,239 INFO L225 Difference]: With dead ends: 60273 [2021-05-03 16:15:51,239 INFO L226 Difference]: Without dead ends: 57749 [2021-05-03 16:15:51,243 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32757 ImplicationChecksByTransitivity, 14257.9ms TimeCoverageRelationStatistics Valid=8938, Invalid=65318, Unknown=0, NotChecked=0, Total=74256 [2021-05-03 16:15:51,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57749 states. [2021-05-03 16:15:51,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57749 to 33335. [2021-05-03 16:15:52,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33335 states, 33334 states have (on average 3.0770984580308394) internal successors, (102572), 33334 states have internal predecessors, (102572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:15:52,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33335 states to 33335 states and 102572 transitions. [2021-05-03 16:15:52,131 INFO L78 Accepts]: Start accepts. Automaton has 33335 states and 102572 transitions. Word has length 51 [2021-05-03 16:15:52,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:15:52,132 INFO L480 AbstractCegarLoop]: Abstraction has 33335 states and 102572 transitions. [2021-05-03 16:15:52,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.5) internal successors, (98), 27 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:15:52,132 INFO L276 IsEmpty]: Start isEmpty. Operand 33335 states and 102572 transitions. [2021-05-03 16:15:52,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-03 16:15:52,188 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:15:52,188 INFO L551 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:15:52,389 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 16:15:52,389 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:15:52,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:15:52,390 INFO L82 PathProgramCache]: Analyzing trace with hash -549490785, now seen corresponding path program 22 times [2021-05-03 16:15:52,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:15:52,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177459804] [2021-05-03 16:15:52,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:15:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:15:52,777 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 11 proven. 37 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-03 16:15:52,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177459804] [2021-05-03 16:15:52,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958328984] [2021-05-03 16:15:52,777 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 [2021-05-03 16:15:52,844 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-03 16:15:52,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:15:52,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-03 16:15:52,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:15:53,048 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-05-03 16:15:53,049 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-05-03 16:15:53,051 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:15:53,057 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:15:53,058 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:15:53,058 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:9 [2021-05-03 16:15:53,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-05-03 16:15:53,173 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:15:53,176 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:15:53,177 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:15:53,177 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:3 [2021-05-03 16:15:53,408 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2021-05-03 16:15:53,433 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-03 16:15:53,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:15:53,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 22 [2021-05-03 16:15:53,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707376034] [2021-05-03 16:15:53,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-03 16:15:53,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:15:53,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-03 16:15:53,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2021-05-03 16:15:53,435 INFO L87 Difference]: Start difference. First operand 33335 states and 102572 transitions. Second operand has 23 states, 23 states have (on average 3.391304347826087) internal successors, (78), 22 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:15:54,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:15:54,443 INFO L93 Difference]: Finished difference Result 49567 states and 151032 transitions. [2021-05-03 16:15:54,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-03 16:15:54,444 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.391304347826087) internal successors, (78), 22 states have internal predecessors, (78), 0 states have call successors, (0), 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 51 [2021-05-03 16:15:54,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:15:54,544 INFO L225 Difference]: With dead ends: 49567 [2021-05-03 16:15:54,544 INFO L226 Difference]: Without dead ends: 49567 [2021-05-03 16:15:54,544 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 860.9ms TimeCoverageRelationStatistics Valid=213, Invalid=1269, Unknown=0, NotChecked=0, Total=1482 [2021-05-03 16:15:54,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49567 states. [2021-05-03 16:15:55,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49567 to 29893. [2021-05-03 16:15:55,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29893 states, 29892 states have (on average 3.059815335206744) internal successors, (91464), 29892 states have internal predecessors, (91464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:15:55,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29893 states to 29893 states and 91464 transitions. [2021-05-03 16:15:55,541 INFO L78 Accepts]: Start accepts. Automaton has 29893 states and 91464 transitions. Word has length 51 [2021-05-03 16:15:55,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:15:55,541 INFO L480 AbstractCegarLoop]: Abstraction has 29893 states and 91464 transitions. [2021-05-03 16:15:55,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 3.391304347826087) internal successors, (78), 22 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:15:55,541 INFO L276 IsEmpty]: Start isEmpty. Operand 29893 states and 91464 transitions. [2021-05-03 16:15:55,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-03 16:15:55,590 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:15:55,590 INFO L551 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:15:55,790 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-05-03 16:15:55,791 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:15:55,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:15:55,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1793055223, now seen corresponding path program 23 times [2021-05-03 16:15:55,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:15:55,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635371332] [2021-05-03 16:15:55,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:15:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:15:56,217 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 3 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 16:15:56,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635371332] [2021-05-03 16:15:56,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624398181] [2021-05-03 16:15:56,218 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 [2021-05-03 16:15:56,258 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-05-03 16:15:56,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:15:56,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-03 16:15:56,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:15:56,526 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-05-03 16:15:56,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-05-03 16:15:56,528 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:15:56,533 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:15:56,534 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:15:56,534 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:9 [2021-05-03 16:15:56,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-05-03 16:15:56,629 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:15:56,631 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:15:56,632 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:15:56,632 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:3 [2021-05-03 16:15:56,695 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 11 proven. 37 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-03 16:15:56,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:15:56,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11] total 30 [2021-05-03 16:15:56,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198966049] [2021-05-03 16:15:56,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-03 16:15:56,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:15:56,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-03 16:15:56,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2021-05-03 16:15:56,697 INFO L87 Difference]: Start difference. First operand 29893 states and 91464 transitions. Second operand has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 30 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:16:07,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:16:07,697 INFO L93 Difference]: Finished difference Result 113268 states and 340351 transitions. [2021-05-03 16:16:07,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2021-05-03 16:16:07,698 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 30 states have internal predecessors, (100), 0 states have call successors, (0), 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 51 [2021-05-03 16:16:07,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:16:07,960 INFO L225 Difference]: With dead ends: 113268 [2021-05-03 16:16:07,960 INFO L226 Difference]: Without dead ends: 113060 [2021-05-03 16:16:07,962 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16077 ImplicationChecksByTransitivity, 7494.6ms TimeCoverageRelationStatistics Valid=6463, Invalid=32149, Unknown=0, NotChecked=0, Total=38612 [2021-05-03 16:16:08,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113060 states. [2021-05-03 16:16:09,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113060 to 30217. [2021-05-03 16:16:09,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30217 states, 30216 states have (on average 3.0600675138999205) internal successors, (92463), 30216 states have internal predecessors, (92463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:16:09,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30217 states to 30217 states and 92463 transitions. [2021-05-03 16:16:09,757 INFO L78 Accepts]: Start accepts. Automaton has 30217 states and 92463 transitions. Word has length 51 [2021-05-03 16:16:09,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:16:09,757 INFO L480 AbstractCegarLoop]: Abstraction has 30217 states and 92463 transitions. [2021-05-03 16:16:09,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 30 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:16:09,758 INFO L276 IsEmpty]: Start isEmpty. Operand 30217 states and 92463 transitions. [2021-05-03 16:16:09,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-03 16:16:09,809 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:16:09,809 INFO L551 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:16:10,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-05-03 16:16:10,017 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:16:10,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:16:10,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1723374429, now seen corresponding path program 24 times [2021-05-03 16:16:10,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:16:10,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151094874] [2021-05-03 16:16:10,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:16:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:16:10,196 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-05-03 16:16:10,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151094874] [2021-05-03 16:16:10,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985279546] [2021-05-03 16:16:10,196 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 [2021-05-03 16:16:10,247 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-05-03 16:16:10,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:16:10,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-03 16:16:10,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:16:10,453 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-05-03 16:16:10,453 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 10 [2021-05-03 16:16:10,456 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:16:10,463 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:16:10,464 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:16:10,465 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:9 [2021-05-03 16:16:10,580 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 11 treesize of output 7 [2021-05-03 16:16:10,583 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:16:10,585 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:16:10,586 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:16:10,586 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:3 [2021-05-03 16:16:10,658 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-03 16:16:10,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:16:10,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2021-05-03 16:16:10,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666608985] [2021-05-03 16:16:10,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-03 16:16:10,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:16:10,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-03 16:16:10,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2021-05-03 16:16:10,660 INFO L87 Difference]: Start difference. First operand 30217 states and 92463 transitions. Second operand has 20 states, 20 states have (on average 4.3) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:16:11,201 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2021-05-03 16:16:17,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:16:17,393 INFO L93 Difference]: Finished difference Result 94742 states and 285397 transitions. [2021-05-03 16:16:17,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-03 16:16:17,394 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.3) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 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 53 [2021-05-03 16:16:17,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:16:17,628 INFO L225 Difference]: With dead ends: 94742 [2021-05-03 16:16:17,628 INFO L226 Difference]: Without dead ends: 94742 [2021-05-03 16:16:17,629 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3669 ImplicationChecksByTransitivity, 2911.0ms TimeCoverageRelationStatistics Valid=1720, Invalid=8786, Unknown=0, NotChecked=0, Total=10506 [2021-05-03 16:16:17,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94742 states. [2021-05-03 16:16:18,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94742 to 34230. [2021-05-03 16:16:18,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34230 states, 34229 states have (on average 3.0484092436238277) internal successors, (104344), 34229 states have internal predecessors, (104344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:16:19,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34230 states to 34230 states and 104344 transitions. [2021-05-03 16:16:19,023 INFO L78 Accepts]: Start accepts. Automaton has 34230 states and 104344 transitions. Word has length 53 [2021-05-03 16:16:19,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:16:19,024 INFO L480 AbstractCegarLoop]: Abstraction has 34230 states and 104344 transitions. [2021-05-03 16:16:19,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.3) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:16:19,024 INFO L276 IsEmpty]: Start isEmpty. Operand 34230 states and 104344 transitions. [2021-05-03 16:16:19,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-03 16:16:19,076 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:16:19,076 INFO L551 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:16:19,292 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 16:16:19,293 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:16:19,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:16:19,293 INFO L82 PathProgramCache]: Analyzing trace with hash 2102977505, now seen corresponding path program 25 times [2021-05-03 16:16:19,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:16:19,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489630673] [2021-05-03 16:16:19,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:16:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:16:20,078 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 52 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-03 16:16:20,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489630673] [2021-05-03 16:16:20,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023034444] [2021-05-03 16:16:20,079 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 [2021-05-03 16:16:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:16:20,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 41 conjunts are in the unsatisfiable core [2021-05-03 16:16:20,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:16:20,535 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 17 treesize of output 13 [2021-05-03 16:16:20,538 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:16:20,561 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:16:20,563 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:16:20,563 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:43, output treesize:36 [2021-05-03 16:16:21,228 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-05-03 16:16:21,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-05-03 16:16:21,421 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:16:21,426 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 21 treesize of output 13 [2021-05-03 16:16:21,428 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-05-03 16:16:21,433 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 13 treesize of output 9 [2021-05-03 16:16:21,435 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-05-03 16:16:21,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:16:21,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-05-03 16:16:21,447 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-05-03 16:16:21,451 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-05-03 16:16:21,452 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-05-03 16:16:21,540 INFO L628 ElimStorePlain]: treesize reduction 42, result has 72.7 percent of original size [2021-05-03 16:16:21,542 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-05-03 16:16:21,542 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 2 variables, input treesize:267, output treesize:112 [2021-05-03 16:16:21,740 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-05-03 16:16:21,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 13 [2021-05-03 16:16:21,745 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:16:21,748 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:16:21,749 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:16:21,749 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:3 [2021-05-03 16:16:21,871 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-03 16:16:21,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:16:21,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 36 [2021-05-03 16:16:21,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428311125] [2021-05-03 16:16:21,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-03 16:16:21,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:16:21,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-03 16:16:21,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1094, Unknown=0, NotChecked=0, Total=1332 [2021-05-03 16:16:21,873 INFO L87 Difference]: Start difference. First operand 34230 states and 104344 transitions. Second operand has 37 states, 37 states have (on average 2.918918918918919) internal successors, (108), 36 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:16:24,793 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-05-03 16:16:25,143 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2021-05-03 16:16:25,744 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-05-03 16:16:26,212 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2021-05-03 16:16:26,973 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2021-05-03 16:16:28,231 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-05-03 16:16:29,035 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-05-03 16:16:29,335 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-05-03 16:16:29,513 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 38 [2021-05-03 16:16:33,597 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-05-03 16:16:34,234 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-05-03 16:16:34,389 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-05-03 16:16:35,053 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-05-03 16:16:36,262 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-05-03 16:16:36,827 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-05-03 16:16:37,354 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2021-05-03 16:16:37,987 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2021-05-03 16:16:38,242 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-05-03 16:16:41,287 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-05-03 16:16:41,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:16:41,983 INFO L93 Difference]: Finished difference Result 74633 states and 224011 transitions. [2021-05-03 16:16:41,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2021-05-03 16:16:41,985 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.918918918918919) internal successors, (108), 36 states have internal predecessors, (108), 0 states have call successors, (0), 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 56 [2021-05-03 16:16:41,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:16:42,164 INFO L225 Difference]: With dead ends: 74633 [2021-05-03 16:16:42,164 INFO L226 Difference]: Without dead ends: 72412 [2021-05-03 16:16:42,167 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24123 ImplicationChecksByTransitivity, 16381.6ms TimeCoverageRelationStatistics Valid=8776, Invalid=43894, Unknown=0, NotChecked=0, Total=52670 [2021-05-03 16:16:42,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72412 states. [2021-05-03 16:16:43,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72412 to 37904. [2021-05-03 16:16:43,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37904 states, 37903 states have (on average 3.058016515843073) internal successors, (115908), 37903 states have internal predecessors, (115908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:16:43,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37904 states to 37904 states and 115908 transitions. [2021-05-03 16:16:43,286 INFO L78 Accepts]: Start accepts. Automaton has 37904 states and 115908 transitions. Word has length 56 [2021-05-03 16:16:43,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:16:43,287 INFO L480 AbstractCegarLoop]: Abstraction has 37904 states and 115908 transitions. [2021-05-03 16:16:43,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 2.918918918918919) internal successors, (108), 36 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:16:43,287 INFO L276 IsEmpty]: Start isEmpty. Operand 37904 states and 115908 transitions. [2021-05-03 16:16:43,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-03 16:16:43,348 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:16:43,348 INFO L551 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:16:43,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 16:16:43,549 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:16:43,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:16:43,549 INFO L82 PathProgramCache]: Analyzing trace with hash -980077063, now seen corresponding path program 26 times [2021-05-03 16:16:43,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:16:43,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286161335] [2021-05-03 16:16:43,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:16:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:16:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 40 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-03 16:16:43,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286161335] [2021-05-03 16:16:43,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086206669] [2021-05-03 16:16:43,584 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 [2021-05-03 16:16:43,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-03 16:16:43,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:16:43,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-03 16:16:43,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:16:43,738 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 40 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-03 16:16:43,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:16:43,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2021-05-03 16:16:43,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182776869] [2021-05-03 16:16:43,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-03 16:16:43,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:16:43,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-03 16:16:43,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-05-03 16:16:43,739 INFO L87 Difference]: Start difference. First operand 37904 states and 115908 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:16:44,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:16:44,038 INFO L93 Difference]: Finished difference Result 72993 states and 221971 transitions. [2021-05-03 16:16:44,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-03 16:16:44,040 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 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 56 [2021-05-03 16:16:44,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:16:44,214 INFO L225 Difference]: With dead ends: 72993 [2021-05-03 16:16:44,214 INFO L226 Difference]: Without dead ends: 72961 [2021-05-03 16:16:44,215 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 15.0ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-05-03 16:16:44,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72961 states. [2021-05-03 16:16:45,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72961 to 55815. [2021-05-03 16:16:45,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55815 states, 55814 states have (on average 3.0660407782993513) internal successors, (171128), 55814 states have internal predecessors, (171128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:16:46,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55815 states to 55815 states and 171128 transitions. [2021-05-03 16:16:46,188 INFO L78 Accepts]: Start accepts. Automaton has 55815 states and 171128 transitions. Word has length 56 [2021-05-03 16:16:46,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:16:46,188 INFO L480 AbstractCegarLoop]: Abstraction has 55815 states and 171128 transitions. [2021-05-03 16:16:46,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:16:46,188 INFO L276 IsEmpty]: Start isEmpty. Operand 55815 states and 171128 transitions. [2021-05-03 16:16:46,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-03 16:16:46,283 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:16:46,283 INFO L551 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:16:46,484 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 16:16:46,484 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:16:46,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:16:46,485 INFO L82 PathProgramCache]: Analyzing trace with hash 778620645, now seen corresponding path program 27 times [2021-05-03 16:16:46,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:16:46,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115189635] [2021-05-03 16:16:46,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:16:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:16:46,677 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 23 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-03 16:16:46,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115189635] [2021-05-03 16:16:46,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669931681] [2021-05-03 16:16:46,678 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 [2021-05-03 16:16:46,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-05-03 16:16:46,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:16:46,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-03 16:16:46,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:16:47,204 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-05-03 16:16:47,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 13 [2021-05-03 16:16:47,207 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:16:47,208 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:16:47,209 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:16:47,209 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:3 [2021-05-03 16:16:47,253 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-03 16:16:47,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:16:47,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-05-03 16:16:47,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579067321] [2021-05-03 16:16:47,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-03 16:16:47,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:16:47,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-03 16:16:47,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2021-05-03 16:16:47,255 INFO L87 Difference]: Start difference. First operand 55815 states and 171128 transitions. Second operand has 24 states, 24 states have (on average 3.9583333333333335) internal successors, (95), 23 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:16:49,909 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-05-03 16:16:51,162 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-05-03 16:16:51,808 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2021-05-03 16:16:52,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:16:52,607 INFO L93 Difference]: Finished difference Result 139582 states and 422743 transitions. [2021-05-03 16:16:52,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-03 16:16:52,610 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.9583333333333335) internal successors, (95), 23 states have internal predecessors, (95), 0 states have call successors, (0), 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 56 [2021-05-03 16:16:52,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:16:52,999 INFO L225 Difference]: With dead ends: 139582 [2021-05-03 16:16:52,999 INFO L226 Difference]: Without dead ends: 139582 [2021-05-03 16:16:52,999 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2354 ImplicationChecksByTransitivity, 3497.1ms TimeCoverageRelationStatistics Valid=1149, Invalid=5493, Unknown=0, NotChecked=0, Total=6642 [2021-05-03 16:16:53,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139582 states. [2021-05-03 16:16:54,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139582 to 64456. [2021-05-03 16:16:55,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64456 states, 64455 states have (on average 3.052656892405554) internal successors, (196759), 64455 states have internal predecessors, (196759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:16:55,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64456 states to 64456 states and 196759 transitions. [2021-05-03 16:16:55,477 INFO L78 Accepts]: Start accepts. Automaton has 64456 states and 196759 transitions. Word has length 56 [2021-05-03 16:16:55,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:16:55,478 INFO L480 AbstractCegarLoop]: Abstraction has 64456 states and 196759 transitions. [2021-05-03 16:16:55,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 3.9583333333333335) internal successors, (95), 23 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:16:55,478 INFO L276 IsEmpty]: Start isEmpty. Operand 64456 states and 196759 transitions. [2021-05-03 16:16:55,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-03 16:16:55,618 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:16:55,618 INFO L551 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:16:55,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-05-03 16:16:55,819 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:16:55,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:16:55,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1534591291, now seen corresponding path program 28 times [2021-05-03 16:16:55,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:16:55,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223290472] [2021-05-03 16:16:55,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:16:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:16:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 5 proven. 54 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-03 16:16:56,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223290472] [2021-05-03 16:16:56,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807398764] [2021-05-03 16:16:56,325 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 [2021-05-03 16:16:56,386 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-03 16:16:56,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:16:56,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-03 16:16:56,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:16:56,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-05-03 16:16:56,698 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:16:56,718 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:16:56,720 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:16:56,720 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:51, output treesize:40 [2021-05-03 16:16:58,125 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-05-03 16:16:58,153 INFO L446 ElimStorePlain]: Different costs {0=[q3], 1=[v_prenex_14], 6=[q1, v_prenex_13]} [2021-05-03 16:16:58,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-05-03 16:16:58,165 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:16:58,267 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-05-03 16:16:58,268 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:16:58,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:16:58,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-05-03 16:16:58,282 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-05-03 16:16:58,288 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 21 treesize of output 13 [2021-05-03 16:16:58,291 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-05-03 16:16:58,376 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:16:58,387 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-05-03 16:16:58,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 18 [2021-05-03 16:16:58,392 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-05-03 16:16:58,462 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:16:58,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:16:58,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:16:58,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:16:58,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-05-03 16:16:58,482 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-05-03 16:16:58,491 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-05-03 16:16:58,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 18 [2021-05-03 16:16:58,497 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-05-03 16:16:58,555 INFO L628 ElimStorePlain]: treesize reduction 12, result has 71.4 percent of original size [2021-05-03 16:16:58,556 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-05-03 16:16:58,556 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:173, output treesize:28 [2021-05-03 16:16:58,679 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-03 16:16:58,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:16:58,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 33 [2021-05-03 16:16:58,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589656950] [2021-05-03 16:16:58,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-03 16:16:58,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:16:58,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-03 16:16:58,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=932, Unknown=0, NotChecked=0, Total=1122 [2021-05-03 16:16:58,680 INFO L87 Difference]: Start difference. First operand 64456 states and 196759 transitions. Second operand has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 33 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:17:01,785 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-05-03 16:17:02,227 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-05-03 16:17:02,787 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2021-05-03 16:17:03,519 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2021-05-03 16:17:06,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:17:06,685 INFO L93 Difference]: Finished difference Result 90510 states and 273742 transitions. [2021-05-03 16:17:06,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-03 16:17:06,688 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 33 states have internal predecessors, (96), 0 states have call successors, (0), 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 56 [2021-05-03 16:17:06,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:17:06,901 INFO L225 Difference]: With dead ends: 90510 [2021-05-03 16:17:06,901 INFO L226 Difference]: Without dead ends: 85519 [2021-05-03 16:17:06,902 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3229 ImplicationChecksByTransitivity, 5964.6ms TimeCoverageRelationStatistics Valid=1479, Invalid=8421, Unknown=0, NotChecked=0, Total=9900 [2021-05-03 16:17:07,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85519 states. [2021-05-03 16:17:08,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85519 to 65000. [2021-05-03 16:17:08,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65000 states, 64999 states have (on average 3.0520623394206066) internal successors, (198381), 64999 states have internal predecessors, (198381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:17:08,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65000 states to 65000 states and 198381 transitions. [2021-05-03 16:17:08,629 INFO L78 Accepts]: Start accepts. Automaton has 65000 states and 198381 transitions. Word has length 56 [2021-05-03 16:17:08,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:17:08,629 INFO L480 AbstractCegarLoop]: Abstraction has 65000 states and 198381 transitions. [2021-05-03 16:17:08,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 33 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:17:08,629 INFO L276 IsEmpty]: Start isEmpty. Operand 65000 states and 198381 transitions. [2021-05-03 16:17:09,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-03 16:17:09,068 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:17:09,068 INFO L551 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:17:09,272 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 16:17:09,273 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:17:09,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:17:09,274 INFO L82 PathProgramCache]: Analyzing trace with hash -446962657, now seen corresponding path program 29 times [2021-05-03 16:17:09,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:17:09,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802084117] [2021-05-03 16:17:09,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:17:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:17:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 47 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-03 16:17:09,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802084117] [2021-05-03 16:17:09,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051781737] [2021-05-03 16:17:09,557 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 [2021-05-03 16:17:09,599 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-05-03 16:17:09,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:17:09,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-03 16:17:09,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:17:10,389 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-05-03 16:17:10,553 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-05-03 16:17:10,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 13 [2021-05-03 16:17:10,558 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:17:10,561 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:17:10,563 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:17:10,563 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:3 [2021-05-03 16:17:10,661 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-03 16:17:10,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:17:10,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-05-03 16:17:10,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42346623] [2021-05-03 16:17:10,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-03 16:17:10,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:17:10,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-03 16:17:10,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2021-05-03 16:17:10,663 INFO L87 Difference]: Start difference. First operand 65000 states and 198381 transitions. Second operand has 24 states, 24 states have (on average 4.125) internal successors, (99), 23 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:17:12,478 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2021-05-03 16:17:12,903 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-05-03 16:17:13,807 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2021-05-03 16:17:14,289 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2021-05-03 16:17:14,485 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2021-05-03 16:17:15,236 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2021-05-03 16:17:15,559 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-05-03 16:17:15,766 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-05-03 16:17:15,989 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2021-05-03 16:17:16,698 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2021-05-03 16:17:17,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:17:17,746 INFO L93 Difference]: Finished difference Result 188211 states and 572959 transitions. [2021-05-03 16:17:17,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-03 16:17:17,748 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.125) internal successors, (99), 23 states have internal predecessors, (99), 0 states have call successors, (0), 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 56 [2021-05-03 16:17:17,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:17:18,235 INFO L225 Difference]: With dead ends: 188211 [2021-05-03 16:17:18,236 INFO L226 Difference]: Without dead ends: 188211 [2021-05-03 16:17:18,236 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 5369.3ms TimeCoverageRelationStatistics Valid=1177, Invalid=4985, Unknown=0, NotChecked=0, Total=6162 [2021-05-03 16:17:18,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188211 states. [2021-05-03 16:17:21,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188211 to 93185. [2021-05-03 16:17:21,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93185 states, 93184 states have (on average 3.0660306490384617) internal successors, (285705), 93184 states have internal predecessors, (285705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:17:21,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93185 states to 93185 states and 285705 transitions. [2021-05-03 16:17:21,895 INFO L78 Accepts]: Start accepts. Automaton has 93185 states and 285705 transitions. Word has length 56 [2021-05-03 16:17:21,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:17:21,895 INFO L480 AbstractCegarLoop]: Abstraction has 93185 states and 285705 transitions. [2021-05-03 16:17:21,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.125) internal successors, (99), 23 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:17:21,896 INFO L276 IsEmpty]: Start isEmpty. Operand 93185 states and 285705 transitions. [2021-05-03 16:17:22,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-03 16:17:22,046 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:17:22,046 INFO L551 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:17:22,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-05-03 16:17:22,249 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:17:22,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:17:22,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1378586361, now seen corresponding path program 30 times [2021-05-03 16:17:22,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:17:22,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555665583] [2021-05-03 16:17:22,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:17:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:17:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 15 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-03 16:17:22,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555665583] [2021-05-03 16:17:22,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050532278] [2021-05-03 16:17:22,489 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 [2021-05-03 16:17:22,543 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-05-03 16:17:22,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:17:22,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-03 16:17:22,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:17:23,147 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2021-05-03 16:17:23,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:23,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:23,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:23,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-05-03 16:17:23,431 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:17:23,441 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-05-03 16:17:23,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 10 [2021-05-03 16:17:23,450 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-05-03 16:17:23,464 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:17:23,466 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-05-03 16:17:23,466 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:54, output treesize:13 [2021-05-03 16:17:23,590 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-03 16:17:23,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:17:23,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-05-03 16:17:23,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977176070] [2021-05-03 16:17:23,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-03 16:17:23,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:17:23,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-03 16:17:23,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2021-05-03 16:17:23,592 INFO L87 Difference]: Start difference. First operand 93185 states and 285705 transitions. Second operand has 24 states, 24 states have (on average 4.083333333333333) internal successors, (98), 23 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:17:27,882 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-05-03 16:17:29,256 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2021-05-03 16:17:29,410 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2021-05-03 16:17:30,036 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-05-03 16:17:30,374 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2021-05-03 16:17:32,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:17:32,902 INFO L93 Difference]: Finished difference Result 186979 states and 572294 transitions. [2021-05-03 16:17:32,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-05-03 16:17:32,903 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.083333333333333) internal successors, (98), 23 states have internal predecessors, (98), 0 states have call successors, (0), 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 56 [2021-05-03 16:17:32,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:17:33,264 INFO L225 Difference]: With dead ends: 186979 [2021-05-03 16:17:33,265 INFO L226 Difference]: Without dead ends: 186979 [2021-05-03 16:17:33,266 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5704 ImplicationChecksByTransitivity, 6709.0ms TimeCoverageRelationStatistics Valid=2347, Invalid=11933, Unknown=0, NotChecked=0, Total=14280 [2021-05-03 16:17:33,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186979 states. [2021-05-03 16:17:36,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186979 to 97599. [2021-05-03 16:17:36,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97599 states, 97598 states have (on average 3.0792844115658107) internal successors, (300532), 97598 states have internal predecessors, (300532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:17:36,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97599 states to 97599 states and 300532 transitions. [2021-05-03 16:17:36,566 INFO L78 Accepts]: Start accepts. Automaton has 97599 states and 300532 transitions. Word has length 56 [2021-05-03 16:17:36,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:17:36,566 INFO L480 AbstractCegarLoop]: Abstraction has 97599 states and 300532 transitions. [2021-05-03 16:17:36,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.083333333333333) internal successors, (98), 23 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:17:36,566 INFO L276 IsEmpty]: Start isEmpty. Operand 97599 states and 300532 transitions. [2021-05-03 16:17:36,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-03 16:17:36,732 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:17:36,732 INFO L551 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:17:36,933 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 16:17:36,934 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:17:36,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:17:36,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1019035651, now seen corresponding path program 31 times [2021-05-03 16:17:36,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:17:36,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651188736] [2021-05-03 16:17:36,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:17:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:17:37,232 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 25 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-03 16:17:37,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651188736] [2021-05-03 16:17:37,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671600537] [2021-05-03 16:17:37,232 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 [2021-05-03 16:17:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:17:37,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-03 16:17:37,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:17:37,557 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 21 treesize of output 13 [2021-05-03 16:17:37,560 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:17:37,583 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:17:37,585 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:17:37,585 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:51, output treesize:40 [2021-05-03 16:17:38,953 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-05-03 16:17:39,133 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-05-03 16:17:39,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:39,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-05-03 16:17:39,471 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:17:39,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:39,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2021-05-03 16:17:39,485 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-05-03 16:17:39,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:39,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-05-03 16:17:39,502 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-05-03 16:17:39,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:39,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-05-03 16:17:39,514 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-05-03 16:17:39,525 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-05-03 16:17:39,525 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 23 [2021-05-03 16:17:39,530 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-05-03 16:17:39,776 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2021-05-03 16:17:39,777 INFO L628 ElimStorePlain]: treesize reduction 21, result has 92.2 percent of original size [2021-05-03 16:17:39,783 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 5 dim-0 vars, and 5 xjuncts. [2021-05-03 16:17:39,783 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 4 variables, input treesize:405, output treesize:248 [2021-05-03 16:17:40,226 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 84 [2021-05-03 16:17:40,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,300 INFO L173 IndexEqualityManager]: detected equality via solver [2021-05-03 16:17:40,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-05-03 16:17:40,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-05-03 16:17:40,313 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:17:40,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-05-03 16:17:40,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-05-03 16:17:40,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-05-03 16:17:40,360 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-05-03 16:17:40,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,375 INFO L173 IndexEqualityManager]: detected equality via solver [2021-05-03 16:17:40,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-05-03 16:17:40,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-05-03 16:17:40,386 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-05-03 16:17:40,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-05-03 16:17:40,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:17:40,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 21 [2021-05-03 16:17:40,406 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-05-03 16:17:40,488 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:17:40,495 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-05-03 16:17:40,495 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:204, output treesize:59 [2021-05-03 16:17:40,769 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-03 16:17:40,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:17:40,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20] total 32 [2021-05-03 16:17:40,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870048021] [2021-05-03 16:17:40,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-03 16:17:40,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:17:40,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-03 16:17:40,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=899, Unknown=0, NotChecked=0, Total=1056 [2021-05-03 16:17:40,770 INFO L87 Difference]: Start difference. First operand 97599 states and 300532 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:17:43,744 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-05-03 16:17:45,002 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2021-05-03 16:17:45,364 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2021-05-03 16:17:46,129 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-05-03 16:17:47,284 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-05-03 16:17:48,951 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-05-03 16:17:49,807 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 91 [2021-05-03 16:17:50,277 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2021-05-03 16:17:51,168 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2021-05-03 16:17:51,599 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-05-03 16:17:52,791 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2021-05-03 16:17:54,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:17:54,024 INFO L93 Difference]: Finished difference Result 203176 states and 620957 transitions. [2021-05-03 16:17:54,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-03 16:17:54,026 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 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 56 [2021-05-03 16:17:54,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:17:54,868 INFO L225 Difference]: With dead ends: 203176 [2021-05-03 16:17:54,868 INFO L226 Difference]: Without dead ends: 203176 [2021-05-03 16:17:54,869 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6134 ImplicationChecksByTransitivity, 9299.6ms TimeCoverageRelationStatistics Valid=2343, Invalid=12663, Unknown=0, NotChecked=0, Total=15006 [2021-05-03 16:17:55,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203176 states. [2021-05-03 16:17:57,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203176 to 98418. [2021-05-03 16:17:57,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98418 states, 98417 states have (on average 3.078025137933487) internal successors, (302930), 98417 states have internal predecessors, (302930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:17:58,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98418 states to 98418 states and 302930 transitions. [2021-05-03 16:17:58,655 INFO L78 Accepts]: Start accepts. Automaton has 98418 states and 302930 transitions. Word has length 56 [2021-05-03 16:17:58,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:17:58,656 INFO L480 AbstractCegarLoop]: Abstraction has 98418 states and 302930 transitions. [2021-05-03 16:17:58,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:17:58,656 INFO L276 IsEmpty]: Start isEmpty. Operand 98418 states and 302930 transitions. [2021-05-03 16:17:58,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-03 16:17:58,787 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:17:58,787 INFO L551 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:17:58,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 16:17:58,988 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:17:58,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:17:58,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1303598751, now seen corresponding path program 32 times [2021-05-03 16:17:58,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:17:58,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200121647] [2021-05-03 16:17:58,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:17:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:18:00,429 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 59 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-03 16:18:00,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200121647] [2021-05-03 16:18:00,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428124544] [2021-05-03 16:18:00,429 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 [2021-05-03 16:18:00,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-03 16:18:00,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:18:00,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 50 conjunts are in the unsatisfiable core [2021-05-03 16:18:00,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:18:01,171 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2021-05-03 16:18:01,827 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-05-03 16:18:02,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:18:02,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2021-05-03 16:18:02,198 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:18:02,208 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-05-03 16:18:02,209 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 31 [2021-05-03 16:18:02,212 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-05-03 16:18:02,299 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:18:02,301 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-05-03 16:18:02,302 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:177, output treesize:137 [2021-05-03 16:18:02,999 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2021-05-03 16:18:03,192 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-05-03 16:18:03,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:18:03,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 27 [2021-05-03 16:18:03,274 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:18:03,283 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-05-03 16:18:03,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 24 [2021-05-03 16:18:03,286 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-05-03 16:18:03,531 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2021-05-03 16:18:03,531 INFO L628 ElimStorePlain]: treesize reduction 7, result has 97.8 percent of original size [2021-05-03 16:18:03,540 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-05-03 16:18:03,540 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 29 [2021-05-03 16:18:03,542 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-05-03 16:18:03,720 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2021-05-03 16:18:03,721 INFO L628 ElimStorePlain]: treesize reduction 74, result has 74.8 percent of original size [2021-05-03 16:18:03,727 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-05-03 16:18:03,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 27 [2021-05-03 16:18:03,730 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-05-03 16:18:03,842 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2021-05-03 16:18:03,842 INFO L628 ElimStorePlain]: treesize reduction 47, result has 75.5 percent of original size [2021-05-03 16:18:03,844 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-05-03 16:18:03,844 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:381, output treesize:143 [2021-05-03 16:18:04,061 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-05-03 16:18:04,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-05-03 16:18:04,063 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:18:04,068 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:18:04,069 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:18:04,069 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:49, output treesize:12 [2021-05-03 16:18:04,274 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-03 16:18:04,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:18:04,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21] total 43 [2021-05-03 16:18:04,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133675170] [2021-05-03 16:18:04,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-03 16:18:04,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:18:04,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-03 16:18:04,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=1505, Unknown=0, NotChecked=0, Total=1892 [2021-05-03 16:18:04,275 INFO L87 Difference]: Start difference. First operand 98418 states and 302930 transitions. Second operand has 44 states, 44 states have (on average 2.4545454545454546) internal successors, (108), 43 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:18:05,189 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2021-05-03 16:18:05,625 WARN L205 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-05-03 16:18:06,110 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2021-05-03 16:18:06,777 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2021-05-03 16:18:07,644 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-05-03 16:18:08,594 WARN L205 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2021-05-03 16:18:09,131 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-05-03 16:18:09,522 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2021-05-03 16:18:09,739 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2021-05-03 16:18:10,099 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2021-05-03 16:18:10,633 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-05-03 16:18:10,991 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2021-05-03 16:18:11,880 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2021-05-03 16:18:12,353 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2021-05-03 16:18:13,403 WARN L205 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2021-05-03 16:18:13,717 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-05-03 16:18:14,197 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2021-05-03 16:18:14,741 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-05-03 16:18:15,255 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-03 16:18:15,635 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-05-03 16:18:16,468 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2021-05-03 16:18:17,095 WARN L205 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-05-03 16:18:17,519 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2021-05-03 16:18:17,943 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2021-05-03 16:18:18,446 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-05-03 16:18:18,942 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2021-05-03 16:18:19,288 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2021-05-03 16:18:19,851 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-05-03 16:18:20,241 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2021-05-03 16:18:20,718 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2021-05-03 16:18:21,097 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2021-05-03 16:18:21,366 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2021-05-03 16:18:21,702 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2021-05-03 16:18:21,951 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-05-03 16:18:22,159 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2021-05-03 16:18:22,474 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-05-03 16:18:23,146 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 49 [2021-05-03 16:18:23,667 WARN L205 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2021-05-03 16:18:23,958 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-05-03 16:18:24,454 WARN L205 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 50 [2021-05-03 16:18:25,143 WARN L205 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2021-05-03 16:18:25,803 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2021-05-03 16:18:26,098 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2021-05-03 16:18:26,533 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2021-05-03 16:18:26,888 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-05-03 16:18:27,406 WARN L205 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2021-05-03 16:18:27,814 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 16:18:28,464 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-05-03 16:18:29,176 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-05-03 16:18:29,784 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-05-03 16:18:30,047 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-05-03 16:18:30,363 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2021-05-03 16:18:30,540 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-05-03 16:18:30,913 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-05-03 16:18:31,284 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2021-05-03 16:18:31,793 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-05-03 16:18:32,227 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2021-05-03 16:18:32,569 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-05-03 16:18:32,868 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-05-03 16:18:33,047 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2021-05-03 16:18:33,577 WARN L205 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-05-03 16:18:33,862 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-05-03 16:18:34,611 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2021-05-03 16:18:35,091 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-05-03 16:18:35,373 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-05-03 16:18:35,893 WARN L205 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2021-05-03 16:18:36,767 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-05-03 16:18:37,236 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2021-05-03 16:18:37,715 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2021-05-03 16:18:38,113 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2021-05-03 16:18:38,591 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2021-05-03 16:18:39,001 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-05-03 16:18:39,584 WARN L205 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2021-05-03 16:18:40,078 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2021-05-03 16:18:40,298 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2021-05-03 16:18:40,673 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2021-05-03 16:18:41,084 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-05-03 16:18:41,339 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2021-05-03 16:18:42,184 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2021-05-03 16:18:42,404 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-05-03 16:18:42,815 WARN L205 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2021-05-03 16:18:43,185 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-05-03 16:18:43,445 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-05-03 16:18:43,885 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2021-05-03 16:18:44,394 WARN L205 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2021-05-03 16:18:44,811 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2021-05-03 16:18:45,260 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2021-05-03 16:18:45,904 WARN L205 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2021-05-03 16:18:46,348 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2021-05-03 16:18:46,573 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2021-05-03 16:18:46,984 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 74 [2021-05-03 16:18:47,193 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-05-03 16:18:47,404 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-05-03 16:18:47,889 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2021-05-03 16:18:48,655 WARN L205 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2021-05-03 16:18:49,060 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2021-05-03 16:18:49,427 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2021-05-03 16:18:50,228 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2021-05-03 16:18:50,454 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2021-05-03 16:18:50,666 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2021-05-03 16:18:51,006 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2021-05-03 16:18:51,326 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2021-05-03 16:18:51,732 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2021-05-03 16:18:52,222 WARN L205 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2021-05-03 16:18:52,586 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-05-03 16:18:53,067 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2021-05-03 16:18:53,606 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 66 [2021-05-03 16:18:53,838 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2021-05-03 16:18:54,482 WARN L205 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2021-05-03 16:18:54,886 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2021-05-03 16:18:55,487 WARN L205 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2021-05-03 16:18:55,993 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2021-05-03 16:18:56,743 WARN L205 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 68 [2021-05-03 16:18:57,602 WARN L205 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-05-03 16:18:58,201 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2021-05-03 16:18:58,912 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-05-03 16:18:59,156 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2021-05-03 16:18:59,489 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-05-03 16:19:00,438 WARN L205 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2021-05-03 16:19:01,150 WARN L205 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2021-05-03 16:19:01,923 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-05-03 16:19:02,118 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2021-05-03 16:19:02,324 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2021-05-03 16:19:02,667 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-05-03 16:19:03,166 WARN L205 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-05-03 16:19:03,646 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2021-05-03 16:19:04,271 WARN L205 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2021-05-03 16:19:05,004 WARN L205 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-05-03 16:19:05,997 WARN L205 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2021-05-03 16:19:06,514 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2021-05-03 16:19:07,966 WARN L205 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2021-05-03 16:19:08,404 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2021-05-03 16:19:09,030 WARN L205 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-05-03 16:19:09,796 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2021-05-03 16:19:09,984 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2021-05-03 16:19:10,434 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-05-03 16:19:10,753 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2021-05-03 16:19:11,054 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2021-05-03 16:19:11,576 WARN L205 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-05-03 16:19:12,125 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2021-05-03 16:19:12,655 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2021-05-03 16:19:13,156 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2021-05-03 16:19:13,479 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-05-03 16:19:14,026 WARN L205 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-05-03 16:19:14,610 WARN L205 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-05-03 16:19:14,893 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2021-05-03 16:19:15,497 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-05-03 16:19:16,024 WARN L205 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2021-05-03 16:19:16,502 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2021-05-03 16:19:17,300 WARN L205 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2021-05-03 16:19:17,849 WARN L205 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-05-03 16:19:18,339 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-05-03 16:19:18,579 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-05-03 16:19:18,804 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2021-05-03 16:19:19,185 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2021-05-03 16:19:19,495 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2021-05-03 16:19:20,230 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-05-03 16:19:20,751 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-05-03 16:19:21,351 WARN L205 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2021-05-03 16:19:22,447 WARN L205 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2021-05-03 16:19:22,916 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2021-05-03 16:19:23,367 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2021-05-03 16:19:23,783 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2021-05-03 16:19:24,362 WARN L205 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2021-05-03 16:19:24,835 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2021-05-03 16:19:25,135 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-05-03 16:19:25,344 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2021-05-03 16:19:25,897 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2021-05-03 16:19:26,466 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2021-05-03 16:19:27,140 WARN L205 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-05-03 16:19:27,785 WARN L205 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-03 16:19:28,100 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2021-05-03 16:19:28,900 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2021-05-03 16:19:29,335 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-05-03 16:19:29,619 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-05-03 16:19:29,958 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-05-03 16:19:30,545 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2021-05-03 16:19:30,898 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2021-05-03 16:19:31,193 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-05-03 16:19:31,505 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-05-03 16:19:31,782 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2021-05-03 16:19:32,143 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-05-03 16:19:32,442 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2021-05-03 16:19:32,713 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2021-05-03 16:19:32,891 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2021-05-03 16:19:33,590 WARN L205 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2021-05-03 16:19:34,157 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2021-05-03 16:19:34,647 WARN L205 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-03 16:19:35,114 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2021-05-03 16:19:35,427 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2021-05-03 16:19:35,726 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-05-03 16:19:35,923 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2021-05-03 16:19:36,287 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-05-03 16:19:37,066 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2021-05-03 16:19:37,368 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2021-05-03 16:19:37,757 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2021-05-03 16:19:37,973 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-05-03 16:19:38,862 WARN L205 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2021-05-03 16:19:39,447 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2021-05-03 16:19:39,979 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-05-03 16:19:40,435 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2021-05-03 16:19:40,735 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2021-05-03 16:19:40,952 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2021-05-03 16:19:41,493 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2021-05-03 16:19:42,620 WARN L205 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-05-03 16:19:43,085 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-05-03 16:19:43,540 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-05-03 16:19:43,878 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2021-05-03 16:19:44,370 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-05-03 16:19:44,826 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2021-05-03 16:19:45,723 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-05-03 16:19:46,370 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2021-05-03 16:19:47,125 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-05-03 16:19:47,333 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2021-05-03 16:19:47,702 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-05-03 16:19:48,025 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2021-05-03 16:19:48,219 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-05-03 16:19:48,526 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2021-05-03 16:19:48,705 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2021-05-03 16:19:49,226 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2021-05-03 16:19:49,776 WARN L205 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-05-03 16:19:50,393 WARN L205 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2021-05-03 16:19:50,814 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-05-03 16:19:51,359 WARN L205 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2021-05-03 16:19:51,843 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2021-05-03 16:19:52,166 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-05-03 16:19:52,723 WARN L205 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-05-03 16:19:53,125 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-05-03 16:19:53,562 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2021-05-03 16:19:54,025 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2021-05-03 16:19:54,301 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-05-03 16:19:54,860 WARN L205 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-05-03 16:19:55,270 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-05-03 16:19:55,793 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-05-03 16:19:56,362 WARN L205 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2021-05-03 16:19:56,854 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2021-05-03 16:19:57,462 WARN L205 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-05-03 16:19:58,008 WARN L205 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-05-03 16:19:58,831 WARN L205 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-05-03 16:19:59,371 WARN L205 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2021-05-03 16:19:59,928 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2021-05-03 16:20:00,453 WARN L205 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-05-03 16:20:00,766 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-05-03 16:20:01,015 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-05-03 16:20:01,373 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2021-05-03 16:20:02,070 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-05-03 16:20:02,740 WARN L205 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2021-05-03 16:20:03,379 WARN L205 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2021-05-03 16:20:04,146 WARN L205 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-05-03 16:20:04,407 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-05-03 16:20:05,667 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2021-05-03 16:20:06,012 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2021-05-03 16:20:06,561 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2021-05-03 16:20:06,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:20:06,641 INFO L93 Difference]: Finished difference Result 197595 states and 597318 transitions. [2021-05-03 16:20:06,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 386 states. [2021-05-03 16:20:06,644 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.4545454545454546) internal successors, (108), 43 states have internal predecessors, (108), 0 states have call successors, (0), 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 56 [2021-05-03 16:20:06,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:20:07,152 INFO L225 Difference]: With dead ends: 197595 [2021-05-03 16:20:07,153 INFO L226 Difference]: Without dead ends: 196131 [2021-05-03 16:20:07,160 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 411 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80981 ImplicationChecksByTransitivity, 106763.6ms TimeCoverageRelationStatistics Valid=27392, Invalid=142764, Unknown=0, NotChecked=0, Total=170156 [2021-05-03 16:20:07,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196131 states. [2021-05-03 16:20:10,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196131 to 101960. [2021-05-03 16:20:10,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101960 states, 101959 states have (on average 3.082847026746045) internal successors, (314324), 101959 states have internal predecessors, (314324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:20:11,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101960 states to 101960 states and 314324 transitions. [2021-05-03 16:20:11,236 INFO L78 Accepts]: Start accepts. Automaton has 101960 states and 314324 transitions. Word has length 56 [2021-05-03 16:20:11,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:20:11,236 INFO L480 AbstractCegarLoop]: Abstraction has 101960 states and 314324 transitions. [2021-05-03 16:20:11,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 2.4545454545454546) internal successors, (108), 43 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:20:11,236 INFO L276 IsEmpty]: Start isEmpty. Operand 101960 states and 314324 transitions. [2021-05-03 16:20:11,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-03 16:20:11,443 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:20:11,443 INFO L551 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:20:11,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 16:20:11,644 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:20:11,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:20:11,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1673280893, now seen corresponding path program 33 times [2021-05-03 16:20:11,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:20:11,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541220518] [2021-05-03 16:20:11,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:20:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:20:12,378 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-03 16:20:12,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541220518] [2021-05-03 16:20:12,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488293306] [2021-05-03 16:20:12,378 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 [2021-05-03 16:20:12,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-05-03 16:20:12,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:20:12,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 41 conjunts are in the unsatisfiable core [2021-05-03 16:20:12,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:20:12,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-05-03 16:20:12,619 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:20:12,635 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:20:12,636 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:20:12,637 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:31 [2021-05-03 16:20:13,340 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-05-03 16:20:13,676 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-05-03 16:20:14,165 WARN L205 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-05-03 16:20:14,715 WARN L205 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2021-05-03 16:20:15,055 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-05-03 16:20:15,402 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-05-03 16:20:15,958 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_33, v_prenex_28, v_prenex_26], 1=[v_prenex_30], 3=[q1, q3], 10=[v_prenex_32]} [2021-05-03 16:20:15,971 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 21 treesize of output 13 [2021-05-03 16:20:15,976 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:20:16,329 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-05-03 16:20:16,330 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:20:16,339 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 17 treesize of output 13 [2021-05-03 16:20:16,342 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-05-03 16:20:16,704 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-05-03 16:20:16,706 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:20:16,715 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 11 treesize of output 9 [2021-05-03 16:20:16,720 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-05-03 16:20:17,130 WARN L205 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-05-03 16:20:17,132 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:20:17,150 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-05-03 16:20:17,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 15 [2021-05-03 16:20:17,156 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-05-03 16:20:17,568 WARN L205 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-05-03 16:20:17,569 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:20:17,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:20:17,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:20:17,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:20:17,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-05-03 16:20:17,611 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-05-03 16:20:17,627 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-05-03 16:20:17,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 22 [2021-05-03 16:20:17,634 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-05-03 16:20:17,996 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-05-03 16:20:17,997 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:20:18,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:20:18,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-05-03 16:20:18,023 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-05-03 16:20:18,042 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-05-03 16:20:18,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 12 [2021-05-03 16:20:18,050 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-05-03 16:20:18,564 WARN L205 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-05-03 16:20:18,565 INFO L628 ElimStorePlain]: treesize reduction 35, result has 83.1 percent of original size [2021-05-03 16:20:18,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:20:18,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:20:18,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:20:18,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:20:18,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:20:18,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:20:18,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 21 [2021-05-03 16:20:18,629 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-05-03 16:20:18,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:20:18,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:20:18,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:20:18,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:20:18,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:20:18,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:20:18,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:20:18,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:20:18,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:20:18,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:20:18,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-05-03 16:20:18,701 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-05-03 16:20:18,716 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-05-03 16:20:18,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 21 [2021-05-03 16:20:18,723 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-05-03 16:20:18,937 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-05-03 16:20:18,938 INFO L628 ElimStorePlain]: treesize reduction 13, result has 78.7 percent of original size [2021-05-03 16:20:18,941 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 7 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-05-03 16:20:18,941 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 14 variables, input treesize:355, output treesize:48 [2021-05-03 16:20:19,134 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-05-03 16:20:19,474 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-03 16:20:19,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:20:19,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 32 [2021-05-03 16:20:19,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150803092] [2021-05-03 16:20:19,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-03 16:20:19,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:20:19,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-03 16:20:19,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2021-05-03 16:20:19,476 INFO L87 Difference]: Start difference. First operand 101960 states and 314324 transitions. Second operand has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:20:22,842 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-05-03 16:20:23,927 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2021-05-03 16:20:24,901 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-05-03 16:20:25,552 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2021-05-03 16:20:26,104 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2021-05-03 16:20:26,783 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 26 [2021-05-03 16:20:27,061 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2021-05-03 16:20:27,725 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2021-05-03 16:20:28,385 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2021-05-03 16:20:28,657 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2021-05-03 16:20:29,593 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2021-05-03 16:20:30,012 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2021-05-03 16:20:30,415 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-05-03 16:20:30,988 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2021-05-03 16:20:31,390 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2021-05-03 16:20:31,808 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2021-05-03 16:20:32,412 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2021-05-03 16:20:33,180 WARN L205 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2021-05-03 16:20:34,095 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2021-05-03 16:20:34,374 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2021-05-03 16:20:35,638 WARN L205 SmtUtils]: Spent 956.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-03 16:20:36,656 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2021-05-03 16:20:37,102 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 34 [2021-05-03 16:20:37,607 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 26 [2021-05-03 16:20:38,556 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-05-03 16:20:39,506 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 26 [2021-05-03 16:20:40,054 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2021-05-03 16:20:40,603 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2021-05-03 16:20:41,073 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2021-05-03 16:20:41,581 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 34 [2021-05-03 16:20:42,321 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2021-05-03 16:20:42,604 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 27 [2021-05-03 16:20:43,284 WARN L205 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2021-05-03 16:20:43,576 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 25 [2021-05-03 16:20:43,851 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-05-03 16:20:44,408 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 31 [2021-05-03 16:20:45,075 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2021-05-03 16:20:45,379 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2021-05-03 16:20:45,741 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-05-03 16:20:45,932 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-05-03 16:20:46,567 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2021-05-03 16:20:46,914 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2021-05-03 16:20:47,557 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2021-05-03 16:20:48,113 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 26 [2021-05-03 16:20:48,916 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2021-05-03 16:20:49,417 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-05-03 16:20:50,193 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 26 [2021-05-03 16:20:51,907 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2021-05-03 16:20:52,907 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2021-05-03 16:20:53,336 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2021-05-03 16:20:54,395 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-05-03 16:20:54,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:20:54,976 INFO L93 Difference]: Finished difference Result 136889 states and 415966 transitions. [2021-05-03 16:20:54,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2021-05-03 16:20:54,979 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 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 56 [2021-05-03 16:20:54,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:20:55,356 INFO L225 Difference]: With dead ends: 136889 [2021-05-03 16:20:55,356 INFO L226 Difference]: Without dead ends: 131367 [2021-05-03 16:20:55,358 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13071 ImplicationChecksByTransitivity, 29410.2ms TimeCoverageRelationStatistics Valid=5033, Invalid=26119, Unknown=0, NotChecked=0, Total=31152 [2021-05-03 16:20:55,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131367 states. [2021-05-03 16:20:57,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131367 to 103609. [2021-05-03 16:20:57,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103609 states, 103608 states have (on average 3.077001775924639) internal successors, (318802), 103608 states have internal predecessors, (318802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:20:58,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103609 states to 103609 states and 318802 transitions. [2021-05-03 16:20:58,609 INFO L78 Accepts]: Start accepts. Automaton has 103609 states and 318802 transitions. Word has length 56 [2021-05-03 16:20:58,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:20:58,609 INFO L480 AbstractCegarLoop]: Abstraction has 103609 states and 318802 transitions. [2021-05-03 16:20:58,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:20:58,609 INFO L276 IsEmpty]: Start isEmpty. Operand 103609 states and 318802 transitions. [2021-05-03 16:20:58,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-03 16:20:58,846 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:20:58,847 INFO L551 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:20:59,047 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 16:20:59,048 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:20:59,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:20:59,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1260804177, now seen corresponding path program 34 times [2021-05-03 16:20:59,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:20:59,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320154285] [2021-05-03 16:20:59,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:20:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:20:59,904 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 20 [2021-05-03 16:21:00,095 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2021-05-03 16:21:00,892 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 59 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-03 16:21:00,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320154285] [2021-05-03 16:21:00,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646450978] [2021-05-03 16:21:00,893 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 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 [2021-05-03 16:21:00,937 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-03 16:21:00,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:21:00,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 47 conjunts are in the unsatisfiable core [2021-05-03 16:21:00,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:21:01,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-05-03 16:21:01,346 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:21:01,380 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:21:01,382 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:21:01,383 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:29 [2021-05-03 16:21:02,187 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-05-03 16:21:02,409 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-05-03 16:21:02,737 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-05-03 16:21:02,967 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-05-03 16:21:03,212 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 16:21:03,803 WARN L205 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2021-05-03 16:21:04,146 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-05-03 16:21:04,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:21:04,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2021-05-03 16:21:04,266 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:21:04,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:21:04,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2021-05-03 16:21:04,292 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-05-03 16:21:04,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:21:04,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2021-05-03 16:21:04,317 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-05-03 16:21:04,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:21:04,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-05-03 16:21:04,344 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-05-03 16:21:04,362 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-05-03 16:21:04,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 20 [2021-05-03 16:21:04,368 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-05-03 16:21:04,743 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-05-03 16:21:04,744 INFO L628 ElimStorePlain]: treesize reduction 79, result has 60.9 percent of original size [2021-05-03 16:21:04,748 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-05-03 16:21:04,748 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 2 variables, input treesize:312, output treesize:123 [2021-05-03 16:21:05,376 WARN L205 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-05-03 16:21:06,032 WARN L205 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-05-03 16:21:06,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:21:06,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:21:06,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:21:06,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2021-05-03 16:21:06,153 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:21:06,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:21:06,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:21:06,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:21:06,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-05-03 16:21:06,195 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-05-03 16:21:06,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:21:06,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:21:06,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:21:06,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:21:06,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:21:06,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:21:06,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:21:06,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:21:06,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:21:06,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:21:06,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-05-03 16:21:06,286 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-05-03 16:21:06,298 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-05-03 16:21:06,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 21 [2021-05-03 16:21:06,305 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-05-03 16:21:06,427 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-05-03 16:21:06,429 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:21:06,432 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-05-03 16:21:06,432 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:169, output treesize:54 [2021-05-03 16:21:06,673 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-05-03 16:21:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-03 16:21:07,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:21:07,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2021-05-03 16:21:07,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310994519] [2021-05-03 16:21:07,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-03 16:21:07,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:21:07,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-03 16:21:07,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=1215, Unknown=0, NotChecked=0, Total=1482 [2021-05-03 16:21:07,176 INFO L87 Difference]: Start difference. First operand 103609 states and 318802 transitions. Second operand has 39 states, 39 states have (on average 2.769230769230769) internal successors, (108), 38 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:21:08,185 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2021-05-03 16:21:08,445 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2021-05-03 16:21:08,971 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2021-05-03 16:21:09,227 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2021-05-03 16:21:09,511 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 17 [2021-05-03 16:21:09,702 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2021-05-03 16:21:09,940 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2021-05-03 16:21:10,277 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 22 [2021-05-03 16:21:10,527 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 27 [2021-05-03 16:21:10,817 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2021-05-03 16:21:11,549 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 15 [2021-05-03 16:21:11,973 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2021-05-03 16:21:12,757 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 20 [2021-05-03 16:21:13,066 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 31 [2021-05-03 16:21:13,394 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2021-05-03 16:21:13,945 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 33 [2021-05-03 16:21:14,219 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 25 [2021-05-03 16:21:15,494 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2021-05-03 16:21:15,762 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 29 [2021-05-03 16:21:16,032 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2021-05-03 16:21:16,687 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2021-05-03 16:21:17,021 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2021-05-03 16:21:17,379 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2021-05-03 16:21:18,635 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2021-05-03 16:21:18,882 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-05-03 16:21:19,241 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2021-05-03 16:21:20,254 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2021-05-03 16:21:21,077 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2021-05-03 16:21:21,514 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2021-05-03 16:21:22,025 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-05-03 16:21:22,458 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2021-05-03 16:21:23,101 WARN L205 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2021-05-03 16:21:23,428 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-05-03 16:21:23,929 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2021-05-03 16:21:24,271 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2021-05-03 16:21:25,373 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2021-05-03 16:21:26,154 WARN L205 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2021-05-03 16:21:26,482 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-05-03 16:21:26,952 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2021-05-03 16:21:27,186 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-03 16:21:27,478 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-05-03 16:21:28,093 WARN L205 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2021-05-03 16:21:28,607 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-05-03 16:21:29,622 WARN L205 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2021-05-03 16:21:29,979 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-05-03 16:21:30,360 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2021-05-03 16:21:30,741 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2021-05-03 16:21:31,230 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-05-03 16:21:31,823 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2021-05-03 16:21:32,160 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 16:21:32,486 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2021-05-03 16:21:33,280 WARN L205 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2021-05-03 16:21:34,046 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2021-05-03 16:21:34,277 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-05-03 16:21:35,077 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2021-05-03 16:21:35,597 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-05-03 16:21:36,022 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2021-05-03 16:21:36,954 WARN L205 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2021-05-03 16:21:37,510 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-05-03 16:21:38,255 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2021-05-03 16:21:39,413 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 23 [2021-05-03 16:21:39,613 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2021-05-03 16:21:39,949 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2021-05-03 16:21:40,305 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2021-05-03 16:21:40,529 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-05-03 16:21:40,816 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-05-03 16:21:41,036 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-05-03 16:21:41,236 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2021-05-03 16:21:41,902 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-05-03 16:21:42,103 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-05-03 16:21:42,616 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2021-05-03 16:21:43,236 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2021-05-03 16:21:43,749 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2021-05-03 16:21:44,165 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2021-05-03 16:21:44,388 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-05-03 16:21:45,396 WARN L205 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2021-05-03 16:21:45,742 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-05-03 16:21:46,169 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-05-03 16:21:46,871 WARN L205 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2021-05-03 16:21:47,423 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2021-05-03 16:21:48,187 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-05-03 16:21:48,450 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-05-03 16:21:48,719 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-05-03 16:21:49,415 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-05-03 16:21:49,725 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-05-03 16:21:50,103 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-05-03 16:21:50,743 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2021-05-03 16:21:51,308 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-05-03 16:21:51,702 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-05-03 16:21:51,908 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-05-03 16:21:52,278 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-05-03 16:21:52,685 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-05-03 16:21:54,116 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-05-03 16:21:54,957 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-05-03 16:21:55,181 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-05-03 16:21:55,586 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-05-03 16:21:56,235 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2021-05-03 16:21:56,455 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-05-03 16:21:56,837 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-05-03 16:21:57,549 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2021-05-03 16:21:58,015 WARN L205 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2021-05-03 16:21:58,446 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-05-03 16:21:58,907 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2021-05-03 16:21:59,787 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2021-05-03 16:22:00,623 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-05-03 16:22:00,839 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-05-03 16:22:01,100 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2021-05-03 16:22:01,656 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2021-05-03 16:22:02,227 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-05-03 16:22:03,060 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-05-03 16:22:03,485 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-05-03 16:22:03,706 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-05-03 16:22:04,058 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2021-05-03 16:22:04,789 WARN L205 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2021-05-03 16:22:05,339 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2021-05-03 16:22:05,889 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-05-03 16:22:06,392 WARN L205 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2021-05-03 16:22:06,645 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2021-05-03 16:22:06,961 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 16:22:07,674 WARN L205 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2021-05-03 16:22:07,968 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-05-03 16:22:08,276 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2021-05-03 16:22:08,965 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-05-03 16:22:09,680 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-05-03 16:22:10,002 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-05-03 16:22:10,213 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-05-03 16:22:10,521 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2021-05-03 16:22:10,692 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 19 [2021-05-03 16:22:11,233 WARN L205 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2021-05-03 16:22:11,865 WARN L205 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-05-03 16:22:12,454 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-05-03 16:22:12,750 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-05-03 16:22:13,020 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-05-03 16:22:13,624 WARN L205 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2021-05-03 16:22:14,288 WARN L205 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2021-05-03 16:22:14,633 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-05-03 16:22:14,910 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-05-03 16:22:15,928 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-05-03 16:22:16,376 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-05-03 16:22:16,753 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-05-03 16:22:17,501 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2021-05-03 16:22:17,821 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2021-05-03 16:22:18,321 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-05-03 16:22:18,527 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2021-05-03 16:22:18,766 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2021-05-03 16:22:18,976 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-05-03 16:22:19,363 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-05-03 16:22:19,565 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2021-05-03 16:22:19,920 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2021-05-03 16:22:20,216 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2021-05-03 16:22:20,550 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-05-03 16:22:20,791 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2021-05-03 16:22:21,040 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2021-05-03 16:22:21,781 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2021-05-03 16:22:22,769 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2021-05-03 16:22:23,201 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2021-05-03 16:22:23,517 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-05-03 16:22:24,122 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2021-05-03 16:22:24,470 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-05-03 16:22:24,767 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-05-03 16:22:25,215 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-05-03 16:22:25,460 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-05-03 16:22:25,752 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2021-05-03 16:22:26,213 WARN L205 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2021-05-03 16:22:26,451 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-05-03 16:22:26,981 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-05-03 16:22:27,217 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-05-03 16:22:27,515 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-05-03 16:22:28,060 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2021-05-03 16:22:28,349 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-05-03 16:22:29,454 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-05-03 16:22:30,238 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-05-03 16:22:31,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:22:31,153 INFO L93 Difference]: Finished difference Result 245324 states and 739880 transitions. [2021-05-03 16:22:31,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 297 states. [2021-05-03 16:22:31,157 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.769230769230769) internal successors, (108), 38 states have internal predecessors, (108), 0 states have call successors, (0), 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 56 [2021-05-03 16:22:31,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:22:32,160 INFO L225 Difference]: With dead ends: 245324 [2021-05-03 16:22:32,160 INFO L226 Difference]: Without dead ends: 245003 [2021-05-03 16:22:32,165 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 316 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47313 ImplicationChecksByTransitivity, 69340.3ms TimeCoverageRelationStatistics Valid=15947, Invalid=84859, Unknown=0, NotChecked=0, Total=100806 [2021-05-03 16:22:32,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245003 states. [2021-05-03 16:22:35,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245003 to 107985. [2021-05-03 16:22:35,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107985 states, 107984 states have (on average 3.0819380648985035) internal successors, (332800), 107984 states have internal predecessors, (332800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:22:35,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107985 states to 107985 states and 332800 transitions. [2021-05-03 16:22:35,984 INFO L78 Accepts]: Start accepts. Automaton has 107985 states and 332800 transitions. Word has length 56 [2021-05-03 16:22:35,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:22:35,985 INFO L480 AbstractCegarLoop]: Abstraction has 107985 states and 332800 transitions. [2021-05-03 16:22:35,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 2.769230769230769) internal successors, (108), 38 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:22:35,985 INFO L276 IsEmpty]: Start isEmpty. Operand 107985 states and 332800 transitions. [2021-05-03 16:22:36,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-03 16:22:36,190 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:22:36,190 INFO L551 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forcibly destroying the process [2021-05-03 16:22:36,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable226 [2021-05-03 16:22:36,665 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:22:36,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:22:36,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1271507299, now seen corresponding path program 35 times [2021-05-03 16:22:36,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:22:36,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072759487] [2021-05-03 16:22:36,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:22:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:22:37,251 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 29 proven. 34 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-03 16:22:37,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072759487] [2021-05-03 16:22:37,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222798925] [2021-05-03 16:22:37,251 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 [2021-05-03 16:22:37,304 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-05-03 16:22:37,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:22:37,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-03 16:22:37,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:22:38,241 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-05-03 16:22:38,588 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2021-05-03 16:22:39,054 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 16:22:39,766 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2021-05-03 16:22:39,895 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 29 proven. 34 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-03 16:22:39,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:22:39,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2021-05-03 16:22:39,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079379084] [2021-05-03 16:22:39,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-03 16:22:39,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:22:39,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-03 16:22:39,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2021-05-03 16:22:39,897 INFO L87 Difference]: Start difference. First operand 107985 states and 332800 transitions. Second operand has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:22:40,636 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 24 [2021-05-03 16:22:40,845 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 27 [2021-05-03 16:22:41,117 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-03 16:22:41,671 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2021-05-03 16:22:42,560 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2021-05-03 16:22:42,964 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2021-05-03 16:22:43,219 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2021-05-03 16:22:44,023 WARN L205 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2021-05-03 16:22:46,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:22:46,407 INFO L93 Difference]: Finished difference Result 302017 states and 931236 transitions. [2021-05-03 16:22:46,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-03 16:22:46,411 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 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 58 [2021-05-03 16:22:46,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:22:47,168 INFO L225 Difference]: With dead ends: 302017 [2021-05-03 16:22:47,168 INFO L226 Difference]: Without dead ends: 302017 [2021-05-03 16:22:47,168 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 5240.4ms TimeCoverageRelationStatistics Valid=430, Invalid=1732, Unknown=0, NotChecked=0, Total=2162 [2021-05-03 16:22:47,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302017 states. [2021-05-03 16:22:51,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302017 to 153719. [2021-05-03 16:22:51,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153719 states, 153718 states have (on average 3.080016653872676) internal successors, (473454), 153718 states have internal predecessors, (473454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:22:52,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153719 states to 153719 states and 473454 transitions. [2021-05-03 16:22:52,013 INFO L78 Accepts]: Start accepts. Automaton has 153719 states and 473454 transitions. Word has length 58 [2021-05-03 16:22:52,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:22:52,013 INFO L480 AbstractCegarLoop]: Abstraction has 153719 states and 473454 transitions. [2021-05-03 16:22:52,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 3.909090909090909) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:22:52,014 INFO L276 IsEmpty]: Start isEmpty. Operand 153719 states and 473454 transitions. [2021-05-03 16:22:52,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-03 16:22:52,904 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:22:52,904 INFO L551 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:22:53,105 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable244 [2021-05-03 16:22:53,105 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:22:53,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:22:53,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1936359503, now seen corresponding path program 36 times [2021-05-03 16:22:53,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:22:53,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519306797] [2021-05-03 16:22:53,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:22:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:22:53,464 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2021-05-03 16:22:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 13 proven. 56 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-03 16:22:53,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519306797] [2021-05-03 16:22:53,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715907265] [2021-05-03 16:22:53,649 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 [2021-05-03 16:22:53,690 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-05-03 16:22:53,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:22:53,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-03 16:22:53,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:22:54,289 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2021-05-03 16:22:54,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:22:54,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:22:54,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-05-03 16:22:54,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:22:54,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-05-03 16:22:54,872 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:22:54,885 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:22:54,889 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:22:54,889 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:3 [2021-05-03 16:22:54,993 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 57 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-03 16:22:54,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:22:54,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-05-03 16:22:54,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592073610] [2021-05-03 16:22:54,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-03 16:22:54,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:22:54,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-03 16:22:54,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-05-03 16:22:54,995 INFO L87 Difference]: Start difference. First operand 153719 states and 473454 transitions. Second operand has 20 states, 20 states have (on average 5.05) internal successors, (101), 19 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:22:55,740 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2021-05-03 16:22:56,239 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2021-05-03 16:22:56,576 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-05-03 16:22:56,944 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2021-05-03 16:22:58,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:22:58,877 INFO L93 Difference]: Finished difference Result 262234 states and 806294 transitions. [2021-05-03 16:22:58,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-03 16:22:58,879 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.05) internal successors, (101), 19 states have internal predecessors, (101), 0 states have call successors, (0), 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 58 [2021-05-03 16:22:58,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:22:59,911 INFO L225 Difference]: With dead ends: 262234 [2021-05-03 16:22:59,911 INFO L226 Difference]: Without dead ends: 262234 [2021-05-03 16:22:59,911 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 2420.1ms TimeCoverageRelationStatistics Valid=257, Invalid=1225, Unknown=0, NotChecked=0, Total=1482 [2021-05-03 16:23:00,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262234 states. [2021-05-03 16:23:03,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262234 to 148804. [2021-05-03 16:23:03,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148804 states, 148803 states have (on average 3.080656976001828) internal successors, (458411), 148803 states have internal predecessors, (458411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:23:03,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148804 states to 148804 states and 458411 transitions. [2021-05-03 16:23:03,938 INFO L78 Accepts]: Start accepts. Automaton has 148804 states and 458411 transitions. Word has length 58 [2021-05-03 16:23:03,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:23:03,938 INFO L480 AbstractCegarLoop]: Abstraction has 148804 states and 458411 transitions. [2021-05-03 16:23:03,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.05) internal successors, (101), 19 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:23:03,938 INFO L276 IsEmpty]: Start isEmpty. Operand 148804 states and 458411 transitions. [2021-05-03 16:23:04,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-03 16:23:04,841 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:23:04,841 INFO L551 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:23:05,042 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261,35 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 16:23:05,042 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:23:05,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:23:05,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1407352233, now seen corresponding path program 37 times [2021-05-03 16:23:05,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:23:05,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832287404] [2021-05-03 16:23:05,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:23:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:23:05,885 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2021-05-03 16:23:06,086 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 24 [2021-05-03 16:23:07,092 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2021-05-03 16:23:08,047 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 1 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 16:23:08,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832287404] [2021-05-03 16:23:08,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690161792] [2021-05-03 16:23:08,047 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 [2021-05-03 16:23:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:23:08,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-03 16:23:08,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:23:08,745 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2021-05-03 16:23:09,326 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-05-03 16:23:09,593 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-05-03 16:23:09,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 13 [2021-05-03 16:23:09,598 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:23:09,601 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:23:09,603 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:23:09,603 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:3 [2021-05-03 16:23:09,791 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-03 16:23:09,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:23:09,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 13] total 39 [2021-05-03 16:23:09,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838908906] [2021-05-03 16:23:09,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-03 16:23:09,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:23:09,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-03 16:23:09,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1391, Unknown=0, NotChecked=0, Total=1560 [2021-05-03 16:23:09,792 INFO L87 Difference]: Start difference. First operand 148804 states and 458411 transitions. Second operand has 40 states, 40 states have (on average 2.925) internal successors, (117), 39 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:23:10,414 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2021-05-03 16:23:10,866 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2021-05-03 16:23:11,448 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2021-05-03 16:23:11,810 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2021-05-03 16:23:12,043 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2021-05-03 16:23:12,189 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2021-05-03 16:23:12,920 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2021-05-03 16:23:13,243 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2021-05-03 16:23:13,461 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2021-05-03 16:23:13,973 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2021-05-03 16:23:14,271 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2021-05-03 16:23:14,479 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2021-05-03 16:23:15,052 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2021-05-03 16:23:15,538 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 32 [2021-05-03 16:23:15,820 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2021-05-03 16:23:16,213 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2021-05-03 16:23:16,894 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2021-05-03 16:23:17,436 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2021-05-03 16:23:17,799 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2021-05-03 16:23:18,225 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2021-05-03 16:23:18,557 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 33 [2021-05-03 16:23:18,935 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-05-03 16:23:19,215 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2021-05-03 16:23:19,522 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2021-05-03 16:23:19,919 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 33 [2021-05-03 16:23:20,187 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2021-05-03 16:23:20,499 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2021-05-03 16:23:20,690 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2021-05-03 16:23:21,176 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2021-05-03 16:23:21,397 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2021-05-03 16:23:22,146 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2021-05-03 16:23:22,743 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2021-05-03 16:23:23,116 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2021-05-03 16:23:23,828 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 28 [2021-05-03 16:23:24,026 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 33 [2021-05-03 16:23:24,326 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2021-05-03 16:23:24,566 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2021-05-03 16:23:25,071 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2021-05-03 16:23:25,274 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2021-05-03 16:23:25,686 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2021-05-03 16:23:25,895 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2021-05-03 16:23:26,232 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 38 [2021-05-03 16:23:26,749 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2021-05-03 16:23:27,128 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2021-05-03 16:23:27,846 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2021-05-03 16:23:28,120 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2021-05-03 16:23:28,448 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2021-05-03 16:23:28,636 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-05-03 16:23:28,928 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2021-05-03 16:23:29,205 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2021-05-03 16:23:29,488 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2021-05-03 16:23:30,194 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-05-03 16:23:31,009 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-05-03 16:23:31,268 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2021-05-03 16:23:31,503 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2021-05-03 16:23:31,698 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2021-05-03 16:23:32,021 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2021-05-03 16:23:32,305 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2021-05-03 16:23:32,892 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2021-05-03 16:23:33,214 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-05-03 16:23:33,564 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-05-03 16:23:33,943 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-05-03 16:23:34,224 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2021-05-03 16:23:34,634 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2021-05-03 16:23:35,764 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-05-03 16:23:35,975 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2021-05-03 16:23:36,262 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2021-05-03 16:23:36,604 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2021-05-03 16:23:36,901 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2021-05-03 16:23:37,234 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 38 [2021-05-03 16:23:37,753 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2021-05-03 16:23:38,086 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2021-05-03 16:23:38,392 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2021-05-03 16:23:38,882 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2021-05-03 16:23:39,372 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2021-05-03 16:23:39,762 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-05-03 16:23:40,060 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 28 [2021-05-03 16:23:40,720 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2021-05-03 16:23:40,909 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-05-03 16:23:41,160 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2021-05-03 16:23:41,485 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2021-05-03 16:23:41,803 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2021-05-03 16:23:42,073 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2021-05-03 16:23:42,284 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2021-05-03 16:23:42,532 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2021-05-03 16:23:42,806 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2021-05-03 16:23:43,320 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-05-03 16:23:43,544 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2021-05-03 16:23:44,468 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-05-03 16:23:44,972 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2021-05-03 16:23:45,202 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2021-05-03 16:23:46,273 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2021-05-03 16:23:46,875 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2021-05-03 16:23:47,319 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2021-05-03 16:23:47,826 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-05-03 16:23:48,049 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2021-05-03 16:23:48,312 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2021-05-03 16:23:48,754 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2021-05-03 16:23:48,980 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 33 [2021-05-03 16:23:49,482 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-05-03 16:23:50,653 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2021-05-03 16:23:51,051 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2021-05-03 16:23:51,327 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2021-05-03 16:23:51,658 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2021-05-03 16:23:51,894 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-05-03 16:23:52,520 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-05-03 16:23:53,209 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2021-05-03 16:23:53,547 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2021-05-03 16:23:53,903 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-05-03 16:23:54,314 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2021-05-03 16:23:54,611 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2021-05-03 16:23:55,204 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2021-05-03 16:23:55,518 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2021-05-03 16:23:56,659 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2021-05-03 16:23:56,921 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 28 [2021-05-03 16:24:00,409 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2021-05-03 16:24:00,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:24:00,995 INFO L93 Difference]: Finished difference Result 367645 states and 1118710 transitions. [2021-05-03 16:24:00,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2021-05-03 16:24:00,997 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.925) internal successors, (117), 39 states have internal predecessors, (117), 0 states have call successors, (0), 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 60 [2021-05-03 16:24:00,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:24:01,713 INFO L225 Difference]: With dead ends: 367645 [2021-05-03 16:24:01,713 INFO L226 Difference]: Without dead ends: 367645 [2021-05-03 16:24:01,715 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20529 ImplicationChecksByTransitivity, 40433.3ms TimeCoverageRelationStatistics Valid=6942, Invalid=45270, Unknown=0, NotChecked=0, Total=52212 [2021-05-03 16:24:02,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367645 states. [2021-05-03 16:24:06,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367645 to 154451. [2021-05-03 16:24:06,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154451 states, 154450 states have (on average 3.0839559728067334) internal successors, (476317), 154450 states have internal predecessors, (476317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:24:07,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154451 states to 154451 states and 476317 transitions. [2021-05-03 16:24:07,475 INFO L78 Accepts]: Start accepts. Automaton has 154451 states and 476317 transitions. Word has length 60 [2021-05-03 16:24:07,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:24:07,475 INFO L480 AbstractCegarLoop]: Abstraction has 154451 states and 476317 transitions. [2021-05-03 16:24:07,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 2.925) internal successors, (117), 39 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:24:07,475 INFO L276 IsEmpty]: Start isEmpty. Operand 154451 states and 476317 transitions. [2021-05-03 16:24:07,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-03 16:24:07,733 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:24:07,733 INFO L551 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:24:07,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable268 [2021-05-03 16:24:07,936 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:24:07,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:24:07,936 INFO L82 PathProgramCache]: Analyzing trace with hash 663756702, now seen corresponding path program 38 times [2021-05-03 16:24:07,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:24:07,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765122839] [2021-05-03 16:24:07,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:24:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:24:10,120 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-03 16:24:10,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765122839] [2021-05-03 16:24:10,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059942209] [2021-05-03 16:24:10,121 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 [2021-05-03 16:24:10,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-03 16:24:10,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:24:10,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-03 16:24:10,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:24:11,871 WARN L205 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-05-03 16:24:12,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:24:12,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2021-05-03 16:24:12,067 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:24:12,077 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-05-03 16:24:12,078 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 31 [2021-05-03 16:24:12,081 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-05-03 16:24:12,176 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:24:12,178 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-05-03 16:24:12,178 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:155, output treesize:115 [2021-05-03 16:24:13,095 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2021-05-03 16:24:13,415 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-05-03 16:24:13,854 INFO L446 ElimStorePlain]: Different costs {1=[q3], 3=[v_prenex_40], 10=[q1]} [2021-05-03 16:24:13,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:24:13,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2021-05-03 16:24:13,877 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:24:13,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:24:13,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-05-03 16:24:13,897 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-05-03 16:24:13,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:24:13,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2021-05-03 16:24:13,921 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-05-03 16:24:13,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:24:13,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2021-05-03 16:24:13,945 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-05-03 16:24:13,962 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-05-03 16:24:13,962 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 18 [2021-05-03 16:24:13,968 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-05-03 16:24:14,400 WARN L205 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2021-05-03 16:24:14,401 INFO L628 ElimStorePlain]: treesize reduction 51, result has 79.7 percent of original size [2021-05-03 16:24:14,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:24:14,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:24:14,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:24:14,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 23 [2021-05-03 16:24:14,424 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-05-03 16:24:14,706 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-05-03 16:24:14,707 INFO L628 ElimStorePlain]: treesize reduction 47, result has 72.0 percent of original size [2021-05-03 16:24:14,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:24:14,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:24:14,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:24:14,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:24:14,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:24:14,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:24:14,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:24:14,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:24:14,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:24:14,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 16:24:14,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 21 [2021-05-03 16:24:14,765 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-05-03 16:24:14,776 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-05-03 16:24:14,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 23 [2021-05-03 16:24:14,782 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-05-03 16:24:14,864 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:24:14,866 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-05-03 16:24:14,866 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 4 variables, input treesize:359, output treesize:44 [2021-05-03 16:24:15,473 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 1 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-03 16:24:15,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:24:15,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21] total 43 [2021-05-03 16:24:15,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802517473] [2021-05-03 16:24:15,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-03 16:24:15,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:24:15,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-03 16:24:15,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1615, Unknown=0, NotChecked=0, Total=1892 [2021-05-03 16:24:15,475 INFO L87 Difference]: Start difference. First operand 154451 states and 476317 transitions. Second operand has 44 states, 44 states have (on average 2.522727272727273) internal successors, (111), 43 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:24:16,395 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2021-05-03 16:24:16,630 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2021-05-03 16:24:18,064 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-05-03 16:24:18,265 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2021-05-03 16:24:18,523 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2021-05-03 16:24:19,005 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2021-05-03 16:24:19,679 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2021-05-03 16:24:20,464 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2021-05-03 16:24:21,053 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 23 [2021-05-03 16:24:21,542 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 25 [2021-05-03 16:24:21,780 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2021-05-03 16:24:22,340 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-05-03 16:24:24,445 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2021-05-03 16:24:24,613 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 23 [2021-05-03 16:24:25,162 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2021-05-03 16:24:25,506 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2021-05-03 16:24:25,709 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2021-05-03 16:24:27,266 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2021-05-03 16:24:27,461 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 20 [2021-05-03 16:24:28,479 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-05-03 16:24:28,830 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2021-05-03 16:24:29,130 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2021-05-03 16:24:30,381 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2021-05-03 16:24:30,637 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2021-05-03 16:24:31,327 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2021-05-03 16:24:31,717 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2021-05-03 16:24:32,453 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2021-05-03 16:24:33,186 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2021-05-03 16:24:33,771 WARN L205 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2021-05-03 16:24:34,545 WARN L205 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2021-05-03 16:24:35,612 WARN L205 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2021-05-03 16:24:36,133 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2021-05-03 16:24:36,930 WARN L205 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2021-05-03 16:24:37,723 WARN L205 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-05-03 16:24:38,341 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-03 16:24:38,865 WARN L205 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2021-05-03 16:24:39,796 WARN L205 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-03 16:24:40,357 WARN L205 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-05-03 16:24:40,989 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-05-03 16:24:41,650 WARN L205 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2021-05-03 16:24:42,338 WARN L205 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2021-05-03 16:24:42,832 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2021-05-03 16:24:43,643 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2021-05-03 16:24:44,035 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-05-03 16:24:44,456 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-05-03 16:24:45,032 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2021-05-03 16:24:45,584 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-05-03 16:24:46,075 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2021-05-03 16:24:46,438 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2021-05-03 16:24:46,990 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-05-03 16:24:47,830 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2021-05-03 16:24:48,211 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2021-05-03 16:24:48,596 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 28 [2021-05-03 16:24:48,873 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-05-03 16:24:49,743 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2021-05-03 16:24:50,117 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-05-03 16:24:50,344 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2021-05-03 16:24:50,523 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 17 [2021-05-03 16:24:51,402 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-05-03 16:24:51,610 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 20 [2021-05-03 16:24:51,857 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 23 [2021-05-03 16:24:52,365 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 25 [2021-05-03 16:24:52,816 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2021-05-03 16:24:53,275 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-05-03 16:24:53,538 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 20 [2021-05-03 16:24:53,871 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2021-05-03 16:24:54,302 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 25 [2021-05-03 16:24:54,578 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-05-03 16:24:55,307 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2021-05-03 16:24:56,430 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2021-05-03 16:24:57,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 16:24:57,939 INFO L93 Difference]: Finished difference Result 248406 states and 757616 transitions. [2021-05-03 16:24:57,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2021-05-03 16:24:57,942 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.522727272727273) internal successors, (111), 43 states have internal predecessors, (111), 0 states have call successors, (0), 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 61 [2021-05-03 16:24:57,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 16:24:58,550 INFO L225 Difference]: With dead ends: 248406 [2021-05-03 16:24:58,550 INFO L226 Difference]: Without dead ends: 247231 [2021-05-03 16:24:58,551 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8368 ImplicationChecksByTransitivity, 31197.5ms TimeCoverageRelationStatistics Valid=2679, Invalid=21501, Unknown=0, NotChecked=0, Total=24180 [2021-05-03 16:24:58,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247231 states. [2021-05-03 16:25:02,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247231 to 155903. [2021-05-03 16:25:02,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155903 states, 155902 states have (on average 3.0844569024130544) internal successors, (480873), 155902 states have internal predecessors, (480873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:25:03,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155903 states to 155903 states and 480873 transitions. [2021-05-03 16:25:03,531 INFO L78 Accepts]: Start accepts. Automaton has 155903 states and 480873 transitions. Word has length 61 [2021-05-03 16:25:03,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 16:25:03,531 INFO L480 AbstractCegarLoop]: Abstraction has 155903 states and 480873 transitions. [2021-05-03 16:25:03,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 2.522727272727273) internal successors, (111), 43 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:25:03,531 INFO L276 IsEmpty]: Start isEmpty. Operand 155903 states and 480873 transitions. [2021-05-03 16:25:03,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-03 16:25:03,818 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 16:25:03,818 INFO L551 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 16:25:04,019 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable280 [2021-05-03 16:25:04,019 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 16:25:04,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 16:25:04,019 INFO L82 PathProgramCache]: Analyzing trace with hash -779192550, now seen corresponding path program 39 times [2021-05-03 16:25:04,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 16:25:04,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34250086] [2021-05-03 16:25:04,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 16:25:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 16:25:04,998 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2021-05-03 16:25:05,163 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 21 [2021-05-03 16:25:05,686 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2021-05-03 16:25:05,850 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2021-05-03 16:25:05,995 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2021-05-03 16:25:06,448 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2021-05-03 16:25:07,092 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 16:25:07,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34250086] [2021-05-03 16:25:07,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270900109] [2021-05-03 16:25:07,092 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 [2021-05-03 16:25:07,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-05-03 16:25:07,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 16:25:07,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-03 16:25:07,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 16:25:08,169 WARN L205 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-05-03 16:25:09,194 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-05-03 16:25:09,424 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-05-03 16:25:09,705 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2021-05-03 16:25:09,871 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-05-03 16:25:09,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 13 [2021-05-03 16:25:09,879 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:25:09,892 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:25:09,894 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:25:09,895 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:7 [2021-05-03 16:25:10,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-05-03 16:25:10,191 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 16:25:10,196 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 16:25:10,198 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 16:25:10,199 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:3 [2021-05-03 16:25:10,412 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-03 16:25:10,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 16:25:10,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 18] total 46 [2021-05-03 16:25:10,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666373962] [2021-05-03 16:25:10,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-03 16:25:10,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 16:25:10,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-03 16:25:10,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=1791, Unknown=0, NotChecked=0, Total=2162 [2021-05-03 16:25:10,413 INFO L87 Difference]: Start difference. First operand 155903 states and 480873 transitions. Second operand has 47 states, 47 states have (on average 2.5319148936170213) internal successors, (119), 46 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 16:25:11,193 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2021-05-03 16:25:11,409 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 28 [2021-05-03 16:25:12,392 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2021-05-03 16:25:13,115 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2021-05-03 16:25:13,357 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2021-05-03 16:25:13,670 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 27 [2021-05-03 16:25:13,928 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-05-03 16:25:14,385 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2021-05-03 16:25:14,717 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2021-05-03 16:25:15,431 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2021-05-03 16:25:16,323 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 15 [2021-05-03 16:25:17,215 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2021-05-03 16:25:17,551 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2021-05-03 16:25:17,764 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 26 [2021-05-03 16:25:17,988 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-05-03 16:25:18,421 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-03 16:25:18,926 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35 [2021-05-03 16:25:19,675 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2021-05-03 16:25:20,473 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2021-05-03 16:25:20,733 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2021-05-03 16:25:21,267 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2021-05-03 16:25:21,719 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-05-03 16:25:22,040 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2021-05-03 16:25:22,216 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2021-05-03 16:25:23,074 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2021-05-03 16:25:23,278 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2021-05-03 16:25:23,651 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-05-03 16:25:23,901 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2021-05-03 16:25:24,339 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2021-05-03 16:25:24,623 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-05-03 16:25:24,933 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-05-03 16:25:25,324 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2021-05-03 16:25:25,961 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2021-05-03 16:25:26,181 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 28 [2021-05-03 16:25:26,548 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2021-05-03 16:25:27,277 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 24 [2021-05-03 16:25:27,497 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 19 [2021-05-03 16:25:27,725 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2021-05-03 16:25:28,189 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2021-05-03 16:25:28,483 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2021-05-03 16:25:28,640 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-05-03 16:25:29,034 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2021-05-03 16:25:29,581 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2021-05-03 16:25:30,100 WARN L205 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2021-05-03 16:25:30,397 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2021-05-03 16:25:30,757 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2021-05-03 16:25:31,197 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2021-05-03 16:25:32,080 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 28 [2021-05-03 16:25:32,287 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2021-05-03 16:25:33,311 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-05-03 16:25:33,904 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-05-03 16:25:34,095 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-05-03 16:25:34,563 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2021-05-03 16:25:34,943 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2021-05-03 16:25:35,291 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2021-05-03 16:25:35,605 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2021-05-03 16:25:36,364 WARN L205 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2021-05-03 16:25:36,809 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2021-05-03 16:25:37,256 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2021-05-03 16:25:37,495 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-05-03 16:25:38,002 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2021-05-03 16:25:38,529 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2021-05-03 16:25:38,753 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-05-03 16:25:39,432 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2021-05-03 16:25:39,614 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-05-03 16:25:39,836 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-05-03 16:25:40,301 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2021-05-03 16:25:40,511 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-05-03 16:25:41,094 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2021-05-03 16:25:41,527 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2021-05-03 16:25:41,705 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2021-05-03 16:25:42,243 WARN L205 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2021-05-03 16:25:42,500 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-03 16:25:42,805 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2021-05-03 16:25:43,040 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2021-05-03 16:25:43,274 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2021-05-03 16:25:43,784 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-05-03 16:25:44,410 WARN L205 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2021-05-03 16:25:44,724 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2021-05-03 16:25:45,197 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2021-05-03 16:25:46,158 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-05-03 16:25:46,557 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-05-03 16:25:46,945 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2021-05-03 16:25:47,593 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2021-05-03 16:25:47,821 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-05-03 16:25:48,007 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 32 [2021-05-03 16:25:48,226 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2021-05-03 16:25:48,815 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-05-03 16:25:49,254 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2021-05-03 16:25:49,528 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-05-03 16:25:49,857 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-05-03 16:25:50,178 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 34 [2021-05-03 16:25:50,428 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 36 [2021-05-03 16:25:50,627 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2021-05-03 16:25:51,470 WARN L205 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2021-05-03 16:25:52,033 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-05-03 16:25:52,308 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 17 [2021-05-03 16:25:53,086 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2021-05-03 16:25:53,287 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2021-05-03 16:25:54,094 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-05-03 16:25:54,411 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 16:25:54,940 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2021-05-03 16:25:55,202 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2021-05-03 16:25:55,763 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-05-03 16:25:56,095 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-05-03 16:25:56,425 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 16:25:56,679 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-05-03 16:25:57,564 WARN L205 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-05-03 16:25:57,833 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 35 [2021-05-03 16:25:58,332 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-05-03 16:25:58,962 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 24 [2021-05-03 16:25:59,786 WARN L205 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-05-03 16:26:00,593 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 16:26:01,212 WARN L205 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2021-05-03 16:26:02,150 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 16:26:02,667 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-05-03 16:26:03,409 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2021-05-03 16:26:04,114 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-05-03 16:26:04,693 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 24 [2021-05-03 16:26:06,003 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-05-03 16:26:06,342 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2021-05-03 16:26:07,421 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-05-03 16:26:07,660 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-05-03 16:26:08,590 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-05-03 16:26:08,839 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-03 16:26:09,791 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2021-05-03 16:26:10,188 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 28 [2021-05-03 16:26:10,661 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-05-03 16:26:10,831 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-05-03 16:26:11,092 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-05-03 16:26:11,363 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 17 [2021-05-03 16:26:11,827 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2021-05-03 16:26:12,962 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2021-05-03 16:26:13,344 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-05-03 16:26:13,672 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-03 16:26:14,876 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2021-05-03 16:26:15,978 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-05-03 16:26:17,036 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-05-03 16:26:17,489 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2021-05-03 16:26:18,710 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2021-05-03 16:26:19,039 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2021-05-03 16:26:19,447 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2021-05-03 16:26:19,872 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2021-05-03 16:26:20,489 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-05-03 16:26:21,164 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 15 [2021-05-03 16:26:21,997 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2021-05-03 16:26:22,191 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-05-03 16:26:23,004 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2021-05-03 16:26:23,382 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 16:26:23,720 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2021-05-03 16:26:23,928 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2021-05-03 16:26:24,655 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-05-03 16:26:24,990 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 22 [2021-05-03 16:26:25,229 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 16 [2021-05-03 16:26:25,561 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2021-05-03 16:26:25,818 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-05-03 16:26:26,067 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-05-03 16:26:26,600 WARN L205 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2021-05-03 16:26:27,221 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-05-03 16:26:27,773 WARN L205 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2021-05-03 16:26:28,103 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-03 16:26:28,328 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-05-03 16:26:28,550 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-05-03 16:26:29,157 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-05-03 16:26:29,574 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2021-05-03 16:26:29,930 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-03 16:26:31,038 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2021-05-03 16:26:31,568 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2021-05-03 16:26:32,232 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2021-05-03 16:26:32,756 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2021-05-03 16:26:32,983 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-05-03 16:26:33,155 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-05-03 16:26:33,861 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2021-05-03 16:26:34,201 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-05-03 16:26:34,742 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2021-05-03 16:26:34,954 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-05-03 16:26:35,384 WARN L205 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2021-05-03 16:26:35,789 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-05-03 16:26:36,476 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-05-03 16:26:36,764 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 28 [2021-05-03 16:26:37,342 WARN L205 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2021-05-03 16:26:37,766 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2021-05-03 16:26:38,254 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 26 [2021-05-03 16:26:38,440 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 28 [2021-05-03 16:26:38,988 WARN L205 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2021-05-03 16:26:39,429 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2021-05-03 16:26:40,188 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2021-05-03 16:26:40,392 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2021-05-03 16:26:40,687 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-05-03 16:26:41,116 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2021-05-03 16:26:41,384 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-03 16:26:41,860 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2021-05-03 16:26:42,171 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2021-05-03 16:26:42,473 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-05-03 16:26:42,946 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2021-05-03 16:26:43,658 WARN L205 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2021-05-03 16:26:44,070 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-05-03 16:26:44,636 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-05-03 16:26:44,863 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-05-03 16:26:45,086 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-05-03 16:26:45,324 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-05-03 16:26:45,594 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 21 [2021-05-03 16:26:45,919 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-05-03 16:26:46,176 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-05-03 16:26:46,835 WARN L205 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2021-05-03 16:26:47,069 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-05-03 16:26:47,739 WARN L205 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-05-03 16:26:48,452 WARN L205 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2021-05-03 16:26:48,989 WARN L205 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2021-05-03 16:26:49,287 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2021-05-03 16:26:49,630 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-05-03 16:26:50,262 WARN L205 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2021-05-03 16:26:50,677 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 16:26:51,216 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2021-05-03 16:26:51,633 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2021-05-03 16:26:52,055 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2021-05-03 16:26:52,458 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2021-05-03 16:26:52,700 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-03 16:26:52,949 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-05-03 16:26:53,496 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-03 16:26:53,930 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2021-05-03 16:26:54,267 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 55 Received shutdown request... [2021-05-03 16:26:54,501 WARN L222 SmtUtils]: Removed 2 from assertion stack [2021-05-03 16:26:54,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-05-03 16:26:54,702 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable319 [2021-05-03 16:26:54,702 WARN L545 AbstractCegarLoop]: Verification canceled [2021-05-03 16:26:54,705 WARN L224 ceAbstractionStarter]: Timeout [2021-05-03 16:26:54,705 INFO L202 PluginConnector]: Adding new model ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.05 04:26:54 BasicIcfg [2021-05-03 16:26:54,705 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-03 16:26:54,706 INFO L168 Benchmark]: Toolchain (without parser) took 775474.42 ms. Allocated memory was 350.2 MB in the beginning and 12.4 GB in the end (delta: 12.0 GB). Free memory was 329.3 MB in the beginning and 7.1 GB in the end (delta: -6.7 GB). Peak memory consumption was 5.3 GB. Max. memory is 16.0 GB. [2021-05-03 16:26:54,706 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 350.2 MB. Free memory was 330.6 MB in the beginning and 330.5 MB in the end (delta: 71.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-03 16:26:54,706 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.49 ms. Allocated memory is still 350.2 MB. Free memory was 329.2 MB in the beginning and 327.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-03 16:26:54,706 INFO L168 Benchmark]: Boogie Preprocessor took 17.57 ms. Allocated memory is still 350.2 MB. Free memory was 327.8 MB in the beginning and 326.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-03 16:26:54,706 INFO L168 Benchmark]: RCFGBuilder took 456.29 ms. Allocated memory is still 350.2 MB. Free memory was 326.6 MB in the beginning and 332.7 MB in the end (delta: -6.1 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.0 GB. [2021-05-03 16:26:54,706 INFO L168 Benchmark]: TraceAbstraction took 774967.01 ms. Allocated memory was 350.2 MB in the beginning and 12.4 GB in the end (delta: 12.0 GB). Free memory was 332.7 MB in the beginning and 7.1 GB in the end (delta: -6.7 GB). Peak memory consumption was 5.3 GB. Max. memory is 16.0 GB. [2021-05-03 16:26:54,706 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 0.15 ms. Allocated memory is still 350.2 MB. Free memory was 330.6 MB in the beginning and 330.5 MB in the end (delta: 71.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 27.49 ms. Allocated memory is still 350.2 MB. Free memory was 329.2 MB in the beginning and 327.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.57 ms. Allocated memory is still 350.2 MB. Free memory was 327.8 MB in the beginning and 326.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 456.29 ms. Allocated memory is still 350.2 MB. Free memory was 326.6 MB in the beginning and 332.7 MB in the end (delta: -6.1 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 774967.01 ms. Allocated memory was 350.2 MB in the beginning and 12.4 GB in the end (delta: 12.0 GB). Free memory was 332.7 MB in the beginning and 7.1 GB in the end (delta: -6.7 GB). Peak memory consumption was 5.3 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 102). Cancelled while BasicCegarLoop was constructing difference of abstraction (155903states) and FLOYD_HOARE automaton (currently 384 states, 47 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 49 for 6ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 774890.7ms, OverallIterations: 42, TraceHistogramMax: 7, EmptinessCheckTime: 4794.6ms, AutomataDifference: 629140.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 40.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4434 SDtfs, 27821 SDslu, 62611 SDs, 0 SdLazy, 94530 SolverSat, 8038 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66974.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6155 GetRequests, 1486 SyntacticMatches, 13 SemanticMatches, 4655 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448009 ImplicationChecksByTransitivity, 496203.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=155903occurred in iteration=41, InterpolantAutomatonStates: 3806, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 59679.7ms AutomataMinimizationTime, 41 MinimizatonAttempts, 1573826 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 368.8ms SsaConstructionTime, 1487.9ms SatisfiabilityAnalysisTime, 70265.3ms InterpolantComputationTime, 3791 NumberOfCodeBlocks, 3777 NumberOfCodeBlocksAsserted, 186 NumberOfCheckSat, 3712 ConstructedInterpolants, 25 QuantifiedInterpolants, 53843 SizeOfPredicates, 330 NumberOfNonLiveVariables, 4723 ConjunctsInSsa, 836 ConjunctsInUnsatCore, 79 InterpolantComputations, 5 PerfectInterpolantSequences, 868/3431 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