/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-proofs/three-array-min-MQZ.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a865e3bea3ade1065a4c95009cfa501fe03c5538-a865e3b [2021-02-19 20:26:39,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 20:26:39,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 20:26:39,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-19 20:26:39,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 20:26:39,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 20:26:39,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 20:26:39,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 20:26:39,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 20:26:39,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 20:26:39,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 20:26:39,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 20:26:39,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 20:26:39,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 20:26:39,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 20:26:39,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 20:26:39,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 20:26:39,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 20:26:39,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 20:26:39,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 20:26:39,611 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 [2021-02-19 20:26:39,637 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 20:26:39,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 20:26:39,637 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-02-19 20:26:39,638 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-02-19 20:26:39,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 20:26:39,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 20:26:39,639 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 20:26:39,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 20:26:39,639 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 20:26:39,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 20:26:39,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 20:26:39,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 20:26:39,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 20:26:39,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 20:26:39,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 20:26:39,641 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 20:26:39,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 20:26:39,641 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 20:26:39,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 20:26:39,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 20:26:39,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 20:26:39,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-19 20:26:39,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 20:26:39,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 20:26:39,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 20:26:39,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 20:26:39,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 20:26:39,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 20:26:39,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 20:26:39,643 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-02-19 20:26:39,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 20:26:39,644 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 20:26:39,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 20:26:39,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 20:26:39,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 20:26:39,973 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-02-19 20:26:39,974 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-02-19 20:26:39,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-proofs/three-array-min-MQZ.wvr.bpl [2021-02-19 20:26:39,976 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-proofs/three-array-min-MQZ.wvr.bpl' [2021-02-19 20:26:40,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 20:26:40,032 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 20:26:40,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-02-19 20:26:40,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-02-19 20:26:40,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-02-19 20:26:40,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "three-array-min-MQZ.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:26:40" (1/1) ... [2021-02-19 20:26:40,049 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "three-array-min-MQZ.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:26:40" (1/1) ... [2021-02-19 20:26:40,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-02-19 20:26:40,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 20:26:40,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 20:26:40,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 20:26:40,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "three-array-min-MQZ.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:26:40" (1/1) ... [2021-02-19 20:26:40,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "three-array-min-MQZ.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:26:40" (1/1) ... [2021-02-19 20:26:40,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "three-array-min-MQZ.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:26:40" (1/1) ... [2021-02-19 20:26:40,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "three-array-min-MQZ.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:26:40" (1/1) ... [2021-02-19 20:26:40,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "three-array-min-MQZ.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:26:40" (1/1) ... [2021-02-19 20:26:40,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "three-array-min-MQZ.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:26:40" (1/1) ... [2021-02-19 20:26:40,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "three-array-min-MQZ.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:26:40" (1/1) ... [2021-02-19 20:26:40,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 20:26:40,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 20:26:40,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 20:26:40,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 20:26:40,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "three-array-min-MQZ.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:26:40" (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 [2021-02-19 20:26:40,136 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-02-19 20:26:40,136 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-02-19 20:26:40,136 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-02-19 20:26:40,137 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-02-19 20:26:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-02-19 20:26:40,137 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-02-19 20:26:40,137 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-02-19 20:26:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 20:26:40,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 20:26:40,137 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-02-19 20:26:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-02-19 20:26:40,138 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-02-19 20:26:40,139 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-02-19 20:26:40,446 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 20:26:40,446 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-19 20:26:40,448 INFO L202 PluginConnector]: Adding new model three-array-min-MQZ.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 08:26:40 BoogieIcfgContainer [2021-02-19 20:26:40,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 20:26:40,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 20:26:40,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 20:26:40,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 20:26:40,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "three-array-min-MQZ.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:26:40" (1/2) ... [2021-02-19 20:26:40,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77dba340 and model type three-array-min-MQZ.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 08:26:40, skipping insertion in model container [2021-02-19 20:26:40,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "three-array-min-MQZ.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 08:26:40" (2/2) ... [2021-02-19 20:26:40,454 INFO L111 eAbstractionObserver]: Analyzing ICFG three-array-min-MQZ.wvr.bpl [2021-02-19 20:26:40,459 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-02-19 20:26:40,459 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 20:26:40,462 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 20:26:40,463 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-02-19 20:26:40,496 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-02-19 20:26:40,511 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-02-19 20:26:40,526 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 20:26:40,527 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 20:26:40,527 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 20:26:40,527 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 20:26:40,527 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 20:26:40,527 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 20:26:40,527 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 20:26:40,527 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 20:26:40,536 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 32 transitions, 88 flow [2021-02-19 20:26:40,557 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 136 states, 134 states have (on average 2.970149253731343) internal successors, (398), 135 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:40,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 134 states have (on average 2.970149253731343) internal successors, (398), 135 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:40,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-02-19 20:26:40,568 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:26:40,568 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:26:40,569 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:26:40,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:26:40,574 INFO L82 PathProgramCache]: Analyzing trace with hash -88517269, now seen corresponding path program 1 times [2021-02-19 20:26:40,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:26:40,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113728602] [2021-02-19 20:26:40,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:26:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:26:40,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:26:40,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113728602] [2021-02-19 20:26:40,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:26:40,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-19 20:26:40,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928545674] [2021-02-19 20:26:40,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-19 20:26:40,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:26:40,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-19 20:26:40,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-19 20:26:40,863 INFO L87 Difference]: Start difference. First operand has 136 states, 134 states have (on average 2.970149253731343) internal successors, (398), 135 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:40,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:26:40,971 INFO L93 Difference]: Finished difference Result 474 states and 1450 transitions. [2021-02-19 20:26:40,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-19 20:26:40,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-02-19 20:26:40,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:26:40,988 INFO L225 Difference]: With dead ends: 474 [2021-02-19 20:26:40,989 INFO L226 Difference]: Without dead ends: 388 [2021-02-19 20:26:40,990 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-02-19 20:26:41,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-02-19 20:26:41,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 176. [2021-02-19 20:26:41,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 3.0914285714285716) internal successors, (541), 175 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:41,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 541 transitions. [2021-02-19 20:26:41,056 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 541 transitions. Word has length 19 [2021-02-19 20:26:41,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:26:41,058 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 541 transitions. [2021-02-19 20:26:41,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:41,058 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 541 transitions. [2021-02-19 20:26:41,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-19 20:26:41,065 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:26:41,065 INFO L506 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] [2021-02-19 20:26:41,065 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 20:26:41,065 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:26:41,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:26:41,066 INFO L82 PathProgramCache]: Analyzing trace with hash 640146471, now seen corresponding path program 1 times [2021-02-19 20:26:41,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:26:41,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94300447] [2021-02-19 20:26:41,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:26:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:26:41,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:26:41,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94300447] [2021-02-19 20:26:41,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:26:41,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-19 20:26:41,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107324077] [2021-02-19 20:26:41,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 20:26:41,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:26:41,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 20:26:41,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 20:26:41,127 INFO L87 Difference]: Start difference. First operand 176 states and 541 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:41,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:26:41,213 INFO L93 Difference]: Finished difference Result 346 states and 1050 transitions. [2021-02-19 20:26:41,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-19 20:26:41,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-02-19 20:26:41,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:26:41,219 INFO L225 Difference]: With dead ends: 346 [2021-02-19 20:26:41,219 INFO L226 Difference]: Without dead ends: 323 [2021-02-19 20:26:41,221 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-19 20:26:41,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-02-19 20:26:41,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 253. [2021-02-19 20:26:41,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 3.142857142857143) internal successors, (792), 252 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:41,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 792 transitions. [2021-02-19 20:26:41,261 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 792 transitions. Word has length 22 [2021-02-19 20:26:41,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:26:41,262 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 792 transitions. [2021-02-19 20:26:41,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:41,262 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 792 transitions. [2021-02-19 20:26:41,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-19 20:26:41,263 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:26:41,263 INFO L506 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] [2021-02-19 20:26:41,263 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 20:26:41,264 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:26:41,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:26:41,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1179493335, now seen corresponding path program 2 times [2021-02-19 20:26:41,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:26:41,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138338711] [2021-02-19 20:26:41,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:26:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:26:41,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:26:41,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138338711] [2021-02-19 20:26:41,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:26:41,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-19 20:26:41,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108710430] [2021-02-19 20:26:41,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 20:26:41,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:26:41,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 20:26:41,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 20:26:41,325 INFO L87 Difference]: Start difference. First operand 253 states and 792 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:41,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:26:41,383 INFO L93 Difference]: Finished difference Result 495 states and 1542 transitions. [2021-02-19 20:26:41,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-19 20:26:41,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-02-19 20:26:41,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:26:41,387 INFO L225 Difference]: With dead ends: 495 [2021-02-19 20:26:41,387 INFO L226 Difference]: Without dead ends: 472 [2021-02-19 20:26:41,388 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-19 20:26:41,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-02-19 20:26:41,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 304. [2021-02-19 20:26:41,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 3.283828382838284) internal successors, (995), 303 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:41,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 995 transitions. [2021-02-19 20:26:41,420 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 995 transitions. Word has length 22 [2021-02-19 20:26:41,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:26:41,421 INFO L480 AbstractCegarLoop]: Abstraction has 304 states and 995 transitions. [2021-02-19 20:26:41,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:41,425 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 995 transitions. [2021-02-19 20:26:41,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-19 20:26:41,428 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:26:41,428 INFO L506 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] [2021-02-19 20:26:41,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-19 20:26:41,428 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:26:41,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:26:41,431 INFO L82 PathProgramCache]: Analyzing trace with hash 265542313, now seen corresponding path program 3 times [2021-02-19 20:26:41,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:26:41,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93532633] [2021-02-19 20:26:41,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:26:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:26:41,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:26:41,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93532633] [2021-02-19 20:26:41,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:26:41,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-19 20:26:41,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176028267] [2021-02-19 20:26:41,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 20:26:41,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:26:41,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 20:26:41,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 20:26:41,481 INFO L87 Difference]: Start difference. First operand 304 states and 995 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:41,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:26:41,540 INFO L93 Difference]: Finished difference Result 348 states and 1103 transitions. [2021-02-19 20:26:41,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-19 20:26:41,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-02-19 20:26:41,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:26:41,543 INFO L225 Difference]: With dead ends: 348 [2021-02-19 20:26:41,543 INFO L226 Difference]: Without dead ends: 348 [2021-02-19 20:26:41,543 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-19 20:26:41,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-02-19 20:26:41,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 296. [2021-02-19 20:26:41,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 3.169491525423729) internal successors, (935), 295 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:41,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 935 transitions. [2021-02-19 20:26:41,555 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 935 transitions. Word has length 22 [2021-02-19 20:26:41,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:26:41,556 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 935 transitions. [2021-02-19 20:26:41,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:41,557 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 935 transitions. [2021-02-19 20:26:41,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-19 20:26:41,558 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:26:41,558 INFO L506 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] [2021-02-19 20:26:41,559 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-19 20:26:41,559 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:26:41,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:26:41,560 INFO L82 PathProgramCache]: Analyzing trace with hash -12859855, now seen corresponding path program 1 times [2021-02-19 20:26:41,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:26:41,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660142294] [2021-02-19 20:26:41,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:26:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:26:41,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 20:26:41,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660142294] [2021-02-19 20:26:41,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:26:41,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-19 20:26:41,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129034543] [2021-02-19 20:26:41,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 20:26:41,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:26:41,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 20:26:41,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 20:26:41,624 INFO L87 Difference]: Start difference. First operand 296 states and 935 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:41,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:26:41,666 INFO L93 Difference]: Finished difference Result 309 states and 971 transitions. [2021-02-19 20:26:41,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-19 20:26:41,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-02-19 20:26:41,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:26:41,668 INFO L225 Difference]: With dead ends: 309 [2021-02-19 20:26:41,669 INFO L226 Difference]: Without dead ends: 309 [2021-02-19 20:26:41,669 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-19 20:26:41,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-02-19 20:26:41,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 256. [2021-02-19 20:26:41,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 3.1372549019607843) internal successors, (800), 255 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:41,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 800 transitions. [2021-02-19 20:26:41,678 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 800 transitions. Word has length 24 [2021-02-19 20:26:41,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:26:41,678 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 800 transitions. [2021-02-19 20:26:41,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:41,678 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 800 transitions. [2021-02-19 20:26:41,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-19 20:26:41,679 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:26:41,679 INFO L506 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] [2021-02-19 20:26:41,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-19 20:26:41,680 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:26:41,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:26:41,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1958304005, now seen corresponding path program 1 times [2021-02-19 20:26:41,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:26:41,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128943240] [2021-02-19 20:26:41,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:26:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:26:42,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:26:42,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128943240] [2021-02-19 20:26:42,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305006319] [2021-02-19 20:26:42,183 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 [2021-02-19 20:26:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:26:42,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 20:26:42,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:26:42,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 24 [2021-02-19 20:26:42,795 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:26:42,801 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 34 treesize of output 24 [2021-02-19 20:26:42,807 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:26:42,813 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 34 treesize of output 24 [2021-02-19 20:26:42,818 INFO L550 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:26:42,830 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 34 treesize of output 24 [2021-02-19 20:26:42,837 INFO L550 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:26:42,902 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:26:42,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-02-19 20:26:42,918 INFO L550 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:26:42,934 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 20 [2021-02-19 20:26:42,939 INFO L550 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:26:42,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 20 [2021-02-19 20:26:42,951 INFO L550 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:26:42,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-02-19 20:26:42,962 INFO L550 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:26:43,014 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:26:43,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-02-19 20:26:43,025 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:43,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-02-19 20:26:43,034 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:43,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-02-19 20:26:43,042 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:43,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-02-19 20:26:43,056 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:43,119 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:26:43,128 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-02-19 20:26:43,128 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 3 variables, input treesize:197, output treesize:57 [2021-02-19 20:26:43,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2021-02-19 20:26:43,235 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:43,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 5 [2021-02-19 20:26:43,241 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:43,247 INFO L628 ElimStorePlain]: treesize reduction 19, result has 20.8 percent of original size [2021-02-19 20:26:43,247 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1 vanished before elimination [2021-02-19 20:26:43,248 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 20:26:43,248 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:40, output treesize:5 [2021-02-19 20:26:43,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:26:43,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:26:43,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-02-19 20:26:43,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220800579] [2021-02-19 20:26:43,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-19 20:26:43,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:26:43,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-19 20:26:43,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-02-19 20:26:43,261 INFO L87 Difference]: Start difference. First operand 256 states and 800 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:43,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:26:43,522 INFO L93 Difference]: Finished difference Result 525 states and 1652 transitions. [2021-02-19 20:26:43,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-19 20:26:43,523 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 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 [2021-02-19 20:26:43,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:26:43,526 INFO L225 Difference]: With dead ends: 525 [2021-02-19 20:26:43,526 INFO L226 Difference]: Without dead ends: 482 [2021-02-19 20:26:43,527 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-02-19 20:26:43,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-02-19 20:26:43,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 373. [2021-02-19 20:26:43,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.161290322580645) internal successors, (1176), 372 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:43,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1176 transitions. [2021-02-19 20:26:43,542 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1176 transitions. Word has length 26 [2021-02-19 20:26:43,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:26:43,543 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1176 transitions. [2021-02-19 20:26:43,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:43,543 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1176 transitions. [2021-02-19 20:26:43,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-19 20:26:43,545 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:26:43,545 INFO L506 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] [2021-02-19 20:26:43,766 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-02-19 20:26:43,766 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:26:43,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:26:43,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1382362165, now seen corresponding path program 2 times [2021-02-19 20:26:43,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:26:43,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527974810] [2021-02-19 20:26:43,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:26:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:26:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 20:26:43,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527974810] [2021-02-19 20:26:43,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:26:43,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-02-19 20:26:43,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797490967] [2021-02-19 20:26:43,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 20:26:43,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:26:43,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 20:26:43,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 20:26:43,793 INFO L87 Difference]: Start difference. First operand 373 states and 1176 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) [2021-02-19 20:26:43,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:26:43,810 INFO L93 Difference]: Finished difference Result 524 states and 1595 transitions. [2021-02-19 20:26:43,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 20:26:43,811 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 [2021-02-19 20:26:43,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:26:43,814 INFO L225 Difference]: With dead ends: 524 [2021-02-19 20:26:43,814 INFO L226 Difference]: Without dead ends: 476 [2021-02-19 20:26:43,814 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 20:26:43,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-02-19 20:26:43,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 403. [2021-02-19 20:26:43,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 3.0970149253731343) internal successors, (1245), 402 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:43,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 1245 transitions. [2021-02-19 20:26:43,827 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 1245 transitions. Word has length 26 [2021-02-19 20:26:43,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:26:43,829 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 1245 transitions. [2021-02-19 20:26:43,829 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) [2021-02-19 20:26:43,829 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 1245 transitions. [2021-02-19 20:26:43,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-19 20:26:43,832 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:26:43,832 INFO L506 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] [2021-02-19 20:26:43,832 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-19 20:26:43,832 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:26:43,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:26:43,832 INFO L82 PathProgramCache]: Analyzing trace with hash -616001465, now seen corresponding path program 3 times [2021-02-19 20:26:43,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:26:43,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550294897] [2021-02-19 20:26:43,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:26:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:26:44,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:26:44,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550294897] [2021-02-19 20:26:44,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121375594] [2021-02-19 20:26:44,170 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 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 [2021-02-19 20:26:44,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-02-19 20:26:44,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 20:26:44,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 14 conjunts are in the unsatisfiable core [2021-02-19 20:26:44,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:26:44,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-02-19 20:26:44,327 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:44,338 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:26:44,340 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 20:26:44,340 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:37 [2021-02-19 20:26:44,486 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 33 treesize of output 23 [2021-02-19 20:26:44,489 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:44,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-02-19 20:26:44,497 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:44,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 23 [2021-02-19 20:26:44,505 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:44,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-02-19 20:26:44,511 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:44,557 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:26:44,562 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 29 treesize of output 19 [2021-02-19 20:26:44,565 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:44,569 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 35 treesize of output 23 [2021-02-19 20:26:44,572 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:44,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 23 [2021-02-19 20:26:44,583 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:44,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 19 [2021-02-19 20:26:44,589 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:44,613 INFO L628 ElimStorePlain]: treesize reduction 17, result has 66.0 percent of original size [2021-02-19 20:26:44,614 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-02-19 20:26:44,614 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 2 variables, input treesize:185, output treesize:33 [2021-02-19 20:26:44,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2021-02-19 20:26:44,690 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:44,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-02-19 20:26:44,695 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:44,700 INFO L628 ElimStorePlain]: treesize reduction 19, result has 20.8 percent of original size [2021-02-19 20:26:44,701 INFO L518 ElimStorePlain]: Eliminatee v_prenex_2 vanished before elimination [2021-02-19 20:26:44,701 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 20:26:44,701 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:40, output treesize:5 [2021-02-19 20:26:44,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:26:44,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:26:44,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2021-02-19 20:26:44,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847157061] [2021-02-19 20:26:44,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 20:26:44,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:26:44,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 20:26:44,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-02-19 20:26:44,713 INFO L87 Difference]: Start difference. First operand 403 states and 1245 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:45,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:26:45,073 INFO L93 Difference]: Finished difference Result 894 states and 2703 transitions. [2021-02-19 20:26:45,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-19 20:26:45,073 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 [2021-02-19 20:26:45,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:26:45,078 INFO L225 Difference]: With dead ends: 894 [2021-02-19 20:26:45,078 INFO L226 Difference]: Without dead ends: 776 [2021-02-19 20:26:45,078 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2021-02-19 20:26:45,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-02-19 20:26:45,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 427. [2021-02-19 20:26:45,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 3.096244131455399) internal successors, (1319), 426 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:45,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 1319 transitions. [2021-02-19 20:26:45,093 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 1319 transitions. Word has length 26 [2021-02-19 20:26:45,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:26:45,093 INFO L480 AbstractCegarLoop]: Abstraction has 427 states and 1319 transitions. [2021-02-19 20:26:45,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:45,093 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 1319 transitions. [2021-02-19 20:26:45,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-19 20:26:45,094 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:26:45,094 INFO L506 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] [2021-02-19 20:26:45,310 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 20:26:45,310 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:26:45,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:26:45,310 INFO L82 PathProgramCache]: Analyzing trace with hash -213312237, now seen corresponding path program 4 times [2021-02-19 20:26:45,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:26:45,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357870161] [2021-02-19 20:26:45,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:26:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:26:45,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:26:45,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357870161] [2021-02-19 20:26:45,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434682723] [2021-02-19 20:26:45,536 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 20:26:45,576 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 20:26:45,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 20:26:45,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 20:26:45,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:26:45,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-02-19 20:26:45,675 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:45,685 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:26:45,685 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 20:26:45,685 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:37 [2021-02-19 20:26:45,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-02-19 20:26:45,736 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:45,740 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 23 treesize of output 19 [2021-02-19 20:26:45,741 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:45,772 INFO L628 ElimStorePlain]: treesize reduction 30, result has 61.0 percent of original size [2021-02-19 20:26:45,773 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-02-19 20:26:45,773 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:87, output treesize:47 [2021-02-19 20:26:45,935 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 22 treesize of output 14 [2021-02-19 20:26:45,937 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:45,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2021-02-19 20:26:45,944 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:45,949 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 22 treesize of output 14 [2021-02-19 20:26:45,951 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:45,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2021-02-19 20:26:45,958 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:46,081 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2021-02-19 20:26:46,082 INFO L628 ElimStorePlain]: treesize reduction 40, result has 81.6 percent of original size [2021-02-19 20:26:46,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-02-19 20:26:46,089 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:46,093 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 20 treesize of output 12 [2021-02-19 20:26:46,094 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:46,113 INFO L628 ElimStorePlain]: treesize reduction 142, result has 3.4 percent of original size [2021-02-19 20:26:46,113 INFO L518 ElimStorePlain]: Eliminatee v_prenex_3 vanished before elimination [2021-02-19 20:26:46,113 INFO L518 ElimStorePlain]: Eliminatee v_prenex_4 vanished before elimination [2021-02-19 20:26:46,113 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 20:26:46,113 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:273, output treesize:5 [2021-02-19 20:26:46,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:26:46,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:26:46,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-02-19 20:26:46,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138671133] [2021-02-19 20:26:46,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-19 20:26:46,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:26:46,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-19 20:26:46,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-19 20:26:46,133 INFO L87 Difference]: Start difference. First operand 427 states and 1319 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 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) [2021-02-19 20:26:46,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:26:46,207 INFO L93 Difference]: Finished difference Result 693 states and 2174 transitions. [2021-02-19 20:26:46,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-19 20:26:46,208 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 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 26 [2021-02-19 20:26:46,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:26:46,211 INFO L225 Difference]: With dead ends: 693 [2021-02-19 20:26:46,212 INFO L226 Difference]: Without dead ends: 604 [2021-02-19 20:26:46,212 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-19 20:26:46,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-02-19 20:26:46,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 431. [2021-02-19 20:26:46,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 3.109302325581395) internal successors, (1337), 430 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:46,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 1337 transitions. [2021-02-19 20:26:46,225 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 1337 transitions. Word has length 26 [2021-02-19 20:26:46,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:26:46,225 INFO L480 AbstractCegarLoop]: Abstraction has 431 states and 1337 transitions. [2021-02-19 20:26:46,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 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) [2021-02-19 20:26:46,225 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 1337 transitions. [2021-02-19 20:26:46,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-19 20:26:46,226 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:26:46,227 INFO L506 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] [2021-02-19 20:26:46,440 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-02-19 20:26:46,441 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:26:46,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:26:46,441 INFO L82 PathProgramCache]: Analyzing trace with hash -2139338845, now seen corresponding path program 5 times [2021-02-19 20:26:46,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:26:46,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080206394] [2021-02-19 20:26:46,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:26:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:26:46,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 20:26:46,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080206394] [2021-02-19 20:26:46,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293890817] [2021-02-19 20:26:46,478 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 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 [2021-02-19 20:26:46,523 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-02-19 20:26:46,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 20:26:46,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-02-19 20:26:46,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:26:46,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 20:26:46,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:26:46,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-02-19 20:26:46,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108735367] [2021-02-19 20:26:46,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-19 20:26:46,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:26:46,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-19 20:26:46,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-19 20:26:46,564 INFO L87 Difference]: Start difference. First operand 431 states and 1337 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 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) [2021-02-19 20:26:46,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:26:46,643 INFO L93 Difference]: Finished difference Result 1077 states and 3313 transitions. [2021-02-19 20:26:46,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 20:26:46,644 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 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 [2021-02-19 20:26:46,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:26:46,649 INFO L225 Difference]: With dead ends: 1077 [2021-02-19 20:26:46,649 INFO L226 Difference]: Without dead ends: 1071 [2021-02-19 20:26:46,649 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-02-19 20:26:46,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2021-02-19 20:26:46,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 723. [2021-02-19 20:26:46,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 3.3005540166204987) internal successors, (2383), 722 states have internal predecessors, (2383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:46,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 2383 transitions. [2021-02-19 20:26:46,672 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 2383 transitions. Word has length 28 [2021-02-19 20:26:46,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:26:46,673 INFO L480 AbstractCegarLoop]: Abstraction has 723 states and 2383 transitions. [2021-02-19 20:26:46,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 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) [2021-02-19 20:26:46,673 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 2383 transitions. [2021-02-19 20:26:46,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-19 20:26:46,676 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:26:46,676 INFO L506 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] [2021-02-19 20:26:46,890 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 20:26:46,890 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:26:46,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:26:46,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1102073401, now seen corresponding path program 6 times [2021-02-19 20:26:46,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:26:46,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080074952] [2021-02-19 20:26:46,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:26:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:26:46,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 20:26:46,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080074952] [2021-02-19 20:26:46,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143780935] [2021-02-19 20:26:46,917 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 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 [2021-02-19 20:26:46,957 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-02-19 20:26:46,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 20:26:46,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2021-02-19 20:26:46,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:26:47,027 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:26:47,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:26:47,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-02-19 20:26:47,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218366912] [2021-02-19 20:26:47,031 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-19 20:26:47,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:26:47,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-19 20:26:47,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-02-19 20:26:47,033 INFO L87 Difference]: Start difference. First operand 723 states and 2383 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:47,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:26:47,657 INFO L93 Difference]: Finished difference Result 3105 states and 9211 transitions. [2021-02-19 20:26:47,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-19 20:26:47,658 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 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 [2021-02-19 20:26:47,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:26:47,671 INFO L225 Difference]: With dead ends: 3105 [2021-02-19 20:26:47,671 INFO L226 Difference]: Without dead ends: 2785 [2021-02-19 20:26:47,671 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=384, Invalid=1098, Unknown=0, NotChecked=0, Total=1482 [2021-02-19 20:26:47,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2021-02-19 20:26:47,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 704. [2021-02-19 20:26:47,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 703 states have (on average 3.3357041251778092) internal successors, (2345), 703 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:47,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 2345 transitions. [2021-02-19 20:26:47,709 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 2345 transitions. Word has length 28 [2021-02-19 20:26:47,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:26:47,709 INFO L480 AbstractCegarLoop]: Abstraction has 704 states and 2345 transitions. [2021-02-19 20:26:47,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:47,709 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 2345 transitions. [2021-02-19 20:26:47,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-19 20:26:47,711 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:26:47,711 INFO L506 BasicCegarLoop]: trace histogram [2, 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] [2021-02-19 20:26:47,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-02-19 20:26:47,935 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:26:47,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:26:47,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1842018893, now seen corresponding path program 7 times [2021-02-19 20:26:47,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:26:47,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025780556] [2021-02-19 20:26:47,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:26:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:26:47,962 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 20:26:47,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025780556] [2021-02-19 20:26:47,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053063920] [2021-02-19 20:26:47,962 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 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 [2021-02-19 20:26:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:26:47,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-02-19 20:26:47,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:26:48,033 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 20:26:48,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:26:48,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-02-19 20:26:48,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999305407] [2021-02-19 20:26:48,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-19 20:26:48,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:26:48,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-19 20:26:48,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-19 20:26:48,035 INFO L87 Difference]: Start difference. First operand 704 states and 2345 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:48,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:26:48,129 INFO L93 Difference]: Finished difference Result 1879 states and 6186 transitions. [2021-02-19 20:26:48,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 20:26:48,130 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-02-19 20:26:48,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:26:48,138 INFO L225 Difference]: With dead ends: 1879 [2021-02-19 20:26:48,138 INFO L226 Difference]: Without dead ends: 1673 [2021-02-19 20:26:48,139 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-02-19 20:26:48,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2021-02-19 20:26:48,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1433. [2021-02-19 20:26:48,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1432 states have (on average 3.4120111731843576) internal successors, (4886), 1432 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:48,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 4886 transitions. [2021-02-19 20:26:48,183 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 4886 transitions. Word has length 29 [2021-02-19 20:26:48,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:26:48,184 INFO L480 AbstractCegarLoop]: Abstraction has 1433 states and 4886 transitions. [2021-02-19 20:26:48,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:48,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 4886 transitions. [2021-02-19 20:26:48,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-19 20:26:48,188 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:26:48,188 INFO L506 BasicCegarLoop]: trace histogram [2, 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] [2021-02-19 20:26:48,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 20:26:48,410 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:26:48,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:26:48,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1481860545, now seen corresponding path program 8 times [2021-02-19 20:26:48,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:26:48,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138831822] [2021-02-19 20:26:48,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:26:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:26:48,438 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:26:48,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138831822] [2021-02-19 20:26:48,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667139947] [2021-02-19 20:26:48,439 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 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 [2021-02-19 20:26:48,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 20:26:48,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 20:26:48,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-02-19 20:26:48,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:26:48,530 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 20:26:48,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:26:48,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2021-02-19 20:26:48,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090749503] [2021-02-19 20:26:48,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-19 20:26:48,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:26:48,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-19 20:26:48,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-02-19 20:26:48,531 INFO L87 Difference]: Start difference. First operand 1433 states and 4886 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 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) [2021-02-19 20:26:49,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:26:49,066 INFO L93 Difference]: Finished difference Result 3885 states and 12614 transitions. [2021-02-19 20:26:49,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-19 20:26:49,067 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 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 29 [2021-02-19 20:26:49,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:26:49,085 INFO L225 Difference]: With dead ends: 3885 [2021-02-19 20:26:49,085 INFO L226 Difference]: Without dead ends: 3731 [2021-02-19 20:26:49,086 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=342, Invalid=1064, Unknown=0, NotChecked=0, Total=1406 [2021-02-19 20:26:49,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3731 states. [2021-02-19 20:26:49,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3731 to 2319. [2021-02-19 20:26:49,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2319 states, 2318 states have (on average 3.567299396031061) internal successors, (8269), 2318 states have internal predecessors, (8269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:49,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2319 states to 2319 states and 8269 transitions. [2021-02-19 20:26:49,166 INFO L78 Accepts]: Start accepts. Automaton has 2319 states and 8269 transitions. Word has length 29 [2021-02-19 20:26:49,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:26:49,167 INFO L480 AbstractCegarLoop]: Abstraction has 2319 states and 8269 transitions. [2021-02-19 20:26:49,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 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) [2021-02-19 20:26:49,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2319 states and 8269 transitions. [2021-02-19 20:26:49,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-19 20:26:49,173 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:26:49,173 INFO L506 BasicCegarLoop]: trace histogram [2, 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] [2021-02-19 20:26:49,390 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 20:26:49,390 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:26:49,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:26:49,390 INFO L82 PathProgramCache]: Analyzing trace with hash 265568901, now seen corresponding path program 9 times [2021-02-19 20:26:49,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:26:49,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982549148] [2021-02-19 20:26:49,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:26:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:26:49,421 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 20:26:49,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982549148] [2021-02-19 20:26:49,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151985491] [2021-02-19 20:26:49,422 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 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 [2021-02-19 20:26:49,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-02-19 20:26:49,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 20:26:49,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-02-19 20:26:49,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:26:49,498 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 20:26:49,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:26:49,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-02-19 20:26:49,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642938799] [2021-02-19 20:26:49,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-19 20:26:49,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:26:49,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-19 20:26:49,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-19 20:26:49,499 INFO L87 Difference]: Start difference. First operand 2319 states and 8269 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:49,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:26:49,580 INFO L93 Difference]: Finished difference Result 3632 states and 12765 transitions. [2021-02-19 20:26:49,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-19 20:26:49,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-02-19 20:26:49,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:26:49,598 INFO L225 Difference]: With dead ends: 3632 [2021-02-19 20:26:49,598 INFO L226 Difference]: Without dead ends: 3577 [2021-02-19 20:26:49,598 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-19 20:26:49,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2021-02-19 20:26:49,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3218. [2021-02-19 20:26:49,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3218 states, 3217 states have (on average 3.6061548026111283) internal successors, (11601), 3217 states have internal predecessors, (11601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:49,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 11601 transitions. [2021-02-19 20:26:49,685 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 11601 transitions. Word has length 29 [2021-02-19 20:26:49,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:26:49,685 INFO L480 AbstractCegarLoop]: Abstraction has 3218 states and 11601 transitions. [2021-02-19 20:26:49,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:49,685 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 11601 transitions. [2021-02-19 20:26:49,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-19 20:26:49,694 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:26:49,694 INFO L506 BasicCegarLoop]: trace histogram [2, 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] [2021-02-19 20:26:49,910 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-02-19 20:26:49,910 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:26:49,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:26:49,910 INFO L82 PathProgramCache]: Analyzing trace with hash -674554215, now seen corresponding path program 10 times [2021-02-19 20:26:49,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:26:49,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388162620] [2021-02-19 20:26:49,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:26:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:26:49,936 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 20:26:49,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388162620] [2021-02-19 20:26:49,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870557185] [2021-02-19 20:26:49,937 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 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 [2021-02-19 20:26:49,980 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 20:26:49,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 20:26:49,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-02-19 20:26:49,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:26:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 20:26:50,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:26:50,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-02-19 20:26:50,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899175018] [2021-02-19 20:26:50,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-19 20:26:50,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:26:50,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-19 20:26:50,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-19 20:26:50,032 INFO L87 Difference]: Start difference. First operand 3218 states and 11601 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:50,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:26:50,104 INFO L93 Difference]: Finished difference Result 3810 states and 13405 transitions. [2021-02-19 20:26:50,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-19 20:26:50,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-02-19 20:26:50,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:26:50,116 INFO L225 Difference]: With dead ends: 3810 [2021-02-19 20:26:50,116 INFO L226 Difference]: Without dead ends: 3810 [2021-02-19 20:26:50,116 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-19 20:26:50,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3810 states. [2021-02-19 20:26:50,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3810 to 3283. [2021-02-19 20:26:50,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3283 states, 3282 states have (on average 3.613345521023766) internal successors, (11859), 3282 states have internal predecessors, (11859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:50,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3283 states to 3283 states and 11859 transitions. [2021-02-19 20:26:50,234 INFO L78 Accepts]: Start accepts. Automaton has 3283 states and 11859 transitions. Word has length 29 [2021-02-19 20:26:50,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:26:50,234 INFO L480 AbstractCegarLoop]: Abstraction has 3283 states and 11859 transitions. [2021-02-19 20:26:50,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:50,235 INFO L276 IsEmpty]: Start isEmpty. Operand 3283 states and 11859 transitions. [2021-02-19 20:26:50,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-19 20:26:50,242 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:26:50,242 INFO L506 BasicCegarLoop]: trace histogram [2, 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] [2021-02-19 20:26:50,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-02-19 20:26:50,458 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:26:50,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:26:50,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1480793499, now seen corresponding path program 11 times [2021-02-19 20:26:50,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:26:50,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488246661] [2021-02-19 20:26:50,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:26:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:26:50,492 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:26:50,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488246661] [2021-02-19 20:26:50,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014498976] [2021-02-19 20:26:50,493 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 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 [2021-02-19 20:26:50,536 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-02-19 20:26:50,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 20:26:50,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-02-19 20:26:50,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:26:50,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:26:50,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:26:50,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-02-19 20:26:50,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597875511] [2021-02-19 20:26:50,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-19 20:26:50,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:26:50,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-19 20:26:50,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-19 20:26:50,601 INFO L87 Difference]: Start difference. First operand 3283 states and 11859 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:50,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:26:50,705 INFO L93 Difference]: Finished difference Result 3694 states and 13063 transitions. [2021-02-19 20:26:50,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-19 20:26:50,706 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-02-19 20:26:50,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:26:50,716 INFO L225 Difference]: With dead ends: 3694 [2021-02-19 20:26:50,716 INFO L226 Difference]: Without dead ends: 3694 [2021-02-19 20:26:50,716 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-02-19 20:26:50,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3694 states. [2021-02-19 20:26:50,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3694 to 3265. [2021-02-19 20:26:50,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3265 states, 3264 states have (on average 3.588235294117647) internal successors, (11712), 3264 states have internal predecessors, (11712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:50,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3265 states to 3265 states and 11712 transitions. [2021-02-19 20:26:50,818 INFO L78 Accepts]: Start accepts. Automaton has 3265 states and 11712 transitions. Word has length 29 [2021-02-19 20:26:50,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:26:50,818 INFO L480 AbstractCegarLoop]: Abstraction has 3265 states and 11712 transitions. [2021-02-19 20:26:50,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:50,819 INFO L276 IsEmpty]: Start isEmpty. Operand 3265 states and 11712 transitions. [2021-02-19 20:26:50,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-19 20:26:50,826 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:26:50,826 INFO L506 BasicCegarLoop]: trace histogram [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] [2021-02-19 20:26:51,042 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-02-19 20:26:51,042 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:26:51,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:26:51,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1019084983, now seen corresponding path program 12 times [2021-02-19 20:26:51,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:26:51,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310394016] [2021-02-19 20:26:51,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:26:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:26:51,075 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 20:26:51,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310394016] [2021-02-19 20:26:51,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083861827] [2021-02-19 20:26:51,075 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 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 [2021-02-19 20:26:51,114 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-02-19 20:26:51,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 20:26:51,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2021-02-19 20:26:51,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:26:51,169 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 20:26:51,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:26:51,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-02-19 20:26:51,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125317437] [2021-02-19 20:26:51,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-19 20:26:51,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:26:51,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-19 20:26:51,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-19 20:26:51,171 INFO L87 Difference]: Start difference. First operand 3265 states and 11712 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:51,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:26:51,262 INFO L93 Difference]: Finished difference Result 6483 states and 22245 transitions. [2021-02-19 20:26:51,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-19 20:26:51,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 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 31 [2021-02-19 20:26:51,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:26:51,280 INFO L225 Difference]: With dead ends: 6483 [2021-02-19 20:26:51,280 INFO L226 Difference]: Without dead ends: 6483 [2021-02-19 20:26:51,281 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-02-19 20:26:51,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6483 states. [2021-02-19 20:26:51,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6483 to 5087. [2021-02-19 20:26:51,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5087 states, 5086 states have (on average 3.5876917027133306) internal successors, (18247), 5086 states have internal predecessors, (18247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:51,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5087 states to 5087 states and 18247 transitions. [2021-02-19 20:26:51,499 INFO L78 Accepts]: Start accepts. Automaton has 5087 states and 18247 transitions. Word has length 31 [2021-02-19 20:26:51,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:26:51,499 INFO L480 AbstractCegarLoop]: Abstraction has 5087 states and 18247 transitions. [2021-02-19 20:26:51,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:51,499 INFO L276 IsEmpty]: Start isEmpty. Operand 5087 states and 18247 transitions. [2021-02-19 20:26:51,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-19 20:26:51,514 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:26:51,515 INFO L506 BasicCegarLoop]: trace histogram [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] [2021-02-19 20:26:51,730 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2021-02-19 20:26:51,730 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:26:51,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:26:51,730 INFO L82 PathProgramCache]: Analyzing trace with hash -100678035, now seen corresponding path program 13 times [2021-02-19 20:26:51,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:26:51,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072870509] [2021-02-19 20:26:51,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:26:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:26:51,765 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 20:26:51,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072870509] [2021-02-19 20:26:51,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661470317] [2021-02-19 20:26:51,765 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 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 [2021-02-19 20:26:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:26:51,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2021-02-19 20:26:51,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:26:51,856 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 20:26:51,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:26:51,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2021-02-19 20:26:51,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893831190] [2021-02-19 20:26:51,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-19 20:26:51,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:26:51,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-19 20:26:51,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-02-19 20:26:51,857 INFO L87 Difference]: Start difference. First operand 5087 states and 18247 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 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) [2021-02-19 20:26:52,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:26:52,637 INFO L93 Difference]: Finished difference Result 8806 states and 29381 transitions. [2021-02-19 20:26:52,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-02-19 20:26:52,637 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 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 31 [2021-02-19 20:26:52,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:26:52,655 INFO L225 Difference]: With dead ends: 8806 [2021-02-19 20:26:52,655 INFO L226 Difference]: Without dead ends: 8704 [2021-02-19 20:26:52,656 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2021-02-19 20:26:52,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8704 states. [2021-02-19 20:26:52,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8704 to 5354. [2021-02-19 20:26:52,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5354 states, 5353 states have (on average 3.6069493741827015) internal successors, (19308), 5353 states have internal predecessors, (19308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:26:52,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5354 states to 5354 states and 19308 transitions. [2021-02-19 20:26:52,861 INFO L78 Accepts]: Start accepts. Automaton has 5354 states and 19308 transitions. Word has length 31 [2021-02-19 20:26:52,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:26:52,862 INFO L480 AbstractCegarLoop]: Abstraction has 5354 states and 19308 transitions. [2021-02-19 20:26:52,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 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) [2021-02-19 20:26:52,862 INFO L276 IsEmpty]: Start isEmpty. Operand 5354 states and 19308 transitions. [2021-02-19 20:26:52,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-19 20:26:52,874 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:26:52,874 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:26:53,078 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 20:26:53,078 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:26:53,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:26:53,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1949632943, now seen corresponding path program 14 times [2021-02-19 20:26:53,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:26:53,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159294865] [2021-02-19 20:26:53,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:26:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:26:53,506 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 47 [2021-02-19 20:26:53,673 WARN L202 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 50 [2021-02-19 20:26:53,871 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:26:53,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159294865] [2021-02-19 20:26:53,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622342842] [2021-02-19 20:26:53,872 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 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 [2021-02-19 20:26:53,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 20:26:53,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 20:26:53,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 24 conjunts are in the unsatisfiable core [2021-02-19 20:26:53,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:26:54,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:26:54,324 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:54,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:26:54,331 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:54,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:26:54,339 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:54,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:26:54,345 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:54,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:26:54,353 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:54,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:26:54,359 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:54,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:26:54,367 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:54,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:26:54,375 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:54,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:26:54,387 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:54,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:26:54,394 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:54,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:26:54,401 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:54,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:26:54,408 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:54,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:26:54,417 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:54,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:26:54,424 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:54,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:26:54,431 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:54,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:26:54,445 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:54,835 WARN L202 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-02-19 20:26:54,836 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:26:54,843 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 16 xjuncts. [2021-02-19 20:26:54,844 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:1249, output treesize:1233 [2021-02-19 20:26:55,251 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-02-19 20:26:55,497 INFO L446 ElimStorePlain]: Different costs {1=[v_C_14, v_prenex_7, v_prenex_10, v_prenex_32, v_prenex_20, v_prenex_41, v_prenex_14, v_prenex_47, v_prenex_35, v_prenex_23, v_prenex_11, v_prenex_44, v_prenex_29, v_prenex_17, v_prenex_38, v_prenex_26], 3=[v_prenex_8, v_prenex_9, v_prenex_31, v_prenex_30, v_prenex_36, v_prenex_13, v_prenex_34, v_prenex_12, v_prenex_33, v_prenex_18, v_prenex_39, v_prenex_16, v_prenex_15, v_prenex_37, v_prenex_19, v_prenex_5, v_prenex_6, A, B, v_prenex_21, v_prenex_43, v_prenex_42, v_prenex_40, v_prenex_25, v_prenex_46, v_prenex_24, v_prenex_45, v_prenex_22, v_prenex_28, v_prenex_49, v_prenex_27, v_prenex_48]} [2021-02-19 20:26:55,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:26:55,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:26:55,532 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:56,110 WARN L202 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 393 [2021-02-19 20:26:56,110 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:26:56,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:26:56,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:26:56,146 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:56,611 WARN L202 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 390 [2021-02-19 20:26:56,612 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:26:56,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:26:56,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:26:56,635 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:57,112 WARN L202 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 387 [2021-02-19 20:26:57,112 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:26:57,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:26:57,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:26:57,136 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:57,614 WARN L202 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2021-02-19 20:26:57,614 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:26:57,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:26:57,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:26:57,639 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:58,122 WARN L202 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 381 [2021-02-19 20:26:58,122 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:26:58,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:26:58,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:26:58,172 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:58,630 WARN L202 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 378 [2021-02-19 20:26:58,631 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:26:58,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:26:58,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:26:58,660 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:59,102 WARN L202 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 375 [2021-02-19 20:26:59,103 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:26:59,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:26:59,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:26:59,131 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-02-19 20:26:59,576 WARN L202 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2021-02-19 20:26:59,577 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:26:59,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:26:59,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:26:59,606 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:00,049 WARN L202 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2021-02-19 20:27:00,049 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:00,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:00,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:27:00,077 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:00,559 WARN L202 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 366 [2021-02-19 20:27:00,560 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:00,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:00,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:27:00,583 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:01,055 WARN L202 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2021-02-19 20:27:01,056 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:01,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:01,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:27:01,083 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:01,564 WARN L202 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 360 [2021-02-19 20:27:01,564 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:01,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:01,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:27:01,591 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:02,034 WARN L202 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 357 [2021-02-19 20:27:02,034 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:02,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:02,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:27:02,060 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:02,496 WARN L202 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 354 [2021-02-19 20:27:02,496 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:02,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:02,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:27:02,519 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:02,990 WARN L202 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 351 [2021-02-19 20:27:02,990 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:03,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:03,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:27:03,012 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:03,460 WARN L202 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 348 [2021-02-19 20:27:03,460 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:03,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:03,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:03,478 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 57 treesize of output 39 [2021-02-19 20:27:03,481 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:03,919 WARN L202 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 342 [2021-02-19 20:27:03,919 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:03,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:03,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:03,936 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 61 treesize of output 35 [2021-02-19 20:27:03,938 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:04,313 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 164 [2021-02-19 20:27:04,314 INFO L628 ElimStorePlain]: treesize reduction 642, result has 49.4 percent of original size [2021-02-19 20:27:04,314 INFO L518 ElimStorePlain]: Eliminatee v_prenex_31 vanished before elimination [2021-02-19 20:27:04,314 INFO L518 ElimStorePlain]: Eliminatee v_prenex_30 vanished before elimination [2021-02-19 20:27:04,314 INFO L518 ElimStorePlain]: Eliminatee v_prenex_36 vanished before elimination [2021-02-19 20:27:04,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:04,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:04,323 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 61 treesize of output 39 [2021-02-19 20:27:04,330 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:04,490 WARN L202 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-02-19 20:27:04,490 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:04,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:04,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:04,504 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 63 treesize of output 39 [2021-02-19 20:27:04,506 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:04,666 WARN L202 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-19 20:27:04,667 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:04,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:04,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:04,676 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 71 treesize of output 41 [2021-02-19 20:27:04,678 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:04,908 WARN L202 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 105 [2021-02-19 20:27:04,908 INFO L628 ElimStorePlain]: treesize reduction 179, result has 68.4 percent of original size [2021-02-19 20:27:04,908 INFO L518 ElimStorePlain]: Eliminatee v_prenex_33 vanished before elimination [2021-02-19 20:27:04,909 INFO L518 ElimStorePlain]: Eliminatee v_prenex_18 vanished before elimination [2021-02-19 20:27:04,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:04,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:04,919 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 57 treesize of output 39 [2021-02-19 20:27:04,921 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:05,015 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:05,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:05,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:05,023 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 57 treesize of output 39 [2021-02-19 20:27:05,024 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:05,111 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:05,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:05,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:05,120 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 59 treesize of output 35 [2021-02-19 20:27:05,123 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:05,220 INFO L628 ElimStorePlain]: treesize reduction 141, result has 54.2 percent of original size [2021-02-19 20:27:05,220 INFO L518 ElimStorePlain]: Eliminatee v_prenex_37 vanished before elimination [2021-02-19 20:27:05,220 INFO L518 ElimStorePlain]: Eliminatee v_prenex_19 vanished before elimination [2021-02-19 20:27:05,221 INFO L518 ElimStorePlain]: Eliminatee v_prenex_5 vanished before elimination [2021-02-19 20:27:05,221 INFO L518 ElimStorePlain]: Eliminatee v_prenex_6 vanished before elimination [2021-02-19 20:27:05,221 INFO L518 ElimStorePlain]: Eliminatee A vanished before elimination [2021-02-19 20:27:05,221 INFO L518 ElimStorePlain]: Eliminatee B vanished before elimination [2021-02-19 20:27:05,221 INFO L518 ElimStorePlain]: Eliminatee v_prenex_21 vanished before elimination [2021-02-19 20:27:05,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:05,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:05,226 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 61 treesize of output 39 [2021-02-19 20:27:05,228 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:05,275 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:05,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:05,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:27:05,281 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 69 treesize of output 41 [2021-02-19 20:27:05,283 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:05,323 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:05,324 INFO L518 ElimStorePlain]: Eliminatee v_prenex_40 vanished before elimination [2021-02-19 20:27:05,324 INFO L518 ElimStorePlain]: Eliminatee v_prenex_25 vanished before elimination [2021-02-19 20:27:05,324 INFO L518 ElimStorePlain]: Eliminatee v_prenex_46 vanished before elimination [2021-02-19 20:27:05,324 INFO L518 ElimStorePlain]: Eliminatee v_prenex_24 vanished before elimination [2021-02-19 20:27:05,324 INFO L518 ElimStorePlain]: Eliminatee v_prenex_45 vanished before elimination [2021-02-19 20:27:05,324 INFO L518 ElimStorePlain]: Eliminatee v_prenex_22 vanished before elimination [2021-02-19 20:27:05,324 INFO L518 ElimStorePlain]: Eliminatee v_prenex_28 vanished before elimination [2021-02-19 20:27:05,324 INFO L518 ElimStorePlain]: Eliminatee v_prenex_49 vanished before elimination [2021-02-19 20:27:05,324 INFO L518 ElimStorePlain]: Eliminatee v_prenex_27 vanished before elimination [2021-02-19 20:27:05,324 INFO L518 ElimStorePlain]: Eliminatee v_prenex_48 vanished before elimination [2021-02-19 20:27:05,326 INFO L550 ElimStorePlain]: Start of recursive call 1: 48 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-02-19 20:27:05,326 INFO L247 ElimStorePlain]: Needed 27 recursive calls to eliminate 48 variables, input treesize:1345, output treesize:107 [2021-02-19 20:27:05,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 17 [2021-02-19 20:27:05,614 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:05,618 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 20 treesize of output 14 [2021-02-19 20:27:05,620 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:05,634 INFO L628 ElimStorePlain]: treesize reduction 86, result has 5.5 percent of original size [2021-02-19 20:27:05,634 INFO L518 ElimStorePlain]: Eliminatee C vanished before elimination [2021-02-19 20:27:05,635 INFO L518 ElimStorePlain]: Eliminatee v_prenex_52 vanished before elimination [2021-02-19 20:27:05,635 INFO L518 ElimStorePlain]: Eliminatee v_prenex_51 vanished before elimination [2021-02-19 20:27:05,635 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 20:27:05,635 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:128, output treesize:5 [2021-02-19 20:27:05,652 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:27:05,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:27:05,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2021-02-19 20:27:05,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075585002] [2021-02-19 20:27:05,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-19 20:27:05,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:27:05,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-19 20:27:05,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-02-19 20:27:05,655 INFO L87 Difference]: Start difference. First operand 5354 states and 19308 transitions. Second operand has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:27:06,196 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2021-02-19 20:27:07,185 WARN L202 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-02-19 20:27:07,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:27:07,693 INFO L93 Difference]: Finished difference Result 8320 states and 29218 transitions. [2021-02-19 20:27:07,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-19 20:27:07,694 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 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 33 [2021-02-19 20:27:07,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:27:07,742 INFO L225 Difference]: With dead ends: 8320 [2021-02-19 20:27:07,742 INFO L226 Difference]: Without dead ends: 8229 [2021-02-19 20:27:07,743 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=172, Invalid=820, Unknown=0, NotChecked=0, Total=992 [2021-02-19 20:27:07,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8229 states. [2021-02-19 20:27:07,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8229 to 5803. [2021-02-19 20:27:07,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5803 states, 5802 states have (on average 3.5910031023784903) internal successors, (20835), 5802 states have internal predecessors, (20835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:27:07,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5803 states to 5803 states and 20835 transitions. [2021-02-19 20:27:07,869 INFO L78 Accepts]: Start accepts. Automaton has 5803 states and 20835 transitions. Word has length 33 [2021-02-19 20:27:07,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:27:07,870 INFO L480 AbstractCegarLoop]: Abstraction has 5803 states and 20835 transitions. [2021-02-19 20:27:07,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:27:07,870 INFO L276 IsEmpty]: Start isEmpty. Operand 5803 states and 20835 transitions. [2021-02-19 20:27:07,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-19 20:27:07,882 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:27:07,882 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:27:08,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2021-02-19 20:27:08,104 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:27:08,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:27:08,104 INFO L82 PathProgramCache]: Analyzing trace with hash -753320501, now seen corresponding path program 15 times [2021-02-19 20:27:08,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:27:08,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489733161] [2021-02-19 20:27:08,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:27:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:27:08,600 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2021-02-19 20:27:08,751 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2021-02-19 20:27:08,933 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 36 [2021-02-19 20:27:09,102 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 35 [2021-02-19 20:27:09,379 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:27:09,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489733161] [2021-02-19 20:27:09,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193639179] [2021-02-19 20:27:09,379 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 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 [2021-02-19 20:27:09,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-02-19 20:27:09,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 20:27:09,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 31 conjunts are in the unsatisfiable core [2021-02-19 20:27:09,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:27:09,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-02-19 20:27:09,738 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:09,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-02-19 20:27:09,745 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:09,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-02-19 20:27:09,753 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:09,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-02-19 20:27:09,762 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:09,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-02-19 20:27:09,769 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:09,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-02-19 20:27:09,776 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:09,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-02-19 20:27:09,783 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:09,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-02-19 20:27:09,791 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:09,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-02-19 20:27:09,798 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:09,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-02-19 20:27:09,821 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:09,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-02-19 20:27:09,830 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:09,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-02-19 20:27:09,837 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:09,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-02-19 20:27:09,845 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:09,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-02-19 20:27:09,852 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:09,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-02-19 20:27:09,860 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:09,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-02-19 20:27:09,867 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:10,203 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-02-19 20:27:10,203 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:10,207 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 16 xjuncts. [2021-02-19 20:27:10,208 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:1153, output treesize:1137 [2021-02-19 20:27:10,583 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-02-19 20:27:11,000 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-02-19 20:27:11,769 WARN L202 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2021-02-19 20:27:13,331 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 43 treesize of output 29 [2021-02-19 20:27:13,337 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:13,367 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 52 treesize of output 36 [2021-02-19 20:27:13,371 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:15,781 WARN L202 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 432 DAG size of output: 412 [2021-02-19 20:27:15,782 INFO L628 ElimStorePlain]: treesize reduction 584, result has 74.6 percent of original size [2021-02-19 20:27:15,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2021-02-19 20:27:15,812 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:16,772 WARN L202 SmtUtils]: Spent 959.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2021-02-19 20:27:16,772 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:16,794 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 29 [2021-02-19 20:27:16,798 INFO L550 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:17,723 WARN L202 SmtUtils]: Spent 924.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2021-02-19 20:27:17,723 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:17,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 36 [2021-02-19 20:27:17,744 INFO L550 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:18,719 WARN L202 SmtUtils]: Spent 974.00 ms on a formula simplification that was a NOOP. DAG size: 401 [2021-02-19 20:27:18,719 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:18,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2021-02-19 20:27:18,742 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:19,650 WARN L202 SmtUtils]: Spent 907.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2021-02-19 20:27:19,650 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:19,668 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 46 treesize of output 30 [2021-02-19 20:27:19,673 INFO L550 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:20,608 WARN L202 SmtUtils]: Spent 934.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2021-02-19 20:27:20,609 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:20,628 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 29 [2021-02-19 20:27:20,631 INFO L550 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:21,571 WARN L202 SmtUtils]: Spent 939.00 ms on a formula simplification that was a NOOP. DAG size: 386 [2021-02-19 20:27:21,572 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:21,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-02-19 20:27:21,608 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:22,527 WARN L202 SmtUtils]: Spent 918.00 ms on a formula simplification that was a NOOP. DAG size: 383 [2021-02-19 20:27:22,528 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:22,551 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 50 treesize of output 34 [2021-02-19 20:27:22,554 INFO L550 ElimStorePlain]: Start of recursive call 11: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:22,574 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 37 treesize of output 25 [2021-02-19 20:27:22,578 INFO L550 ElimStorePlain]: Start of recursive call 12: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:23,456 WARN L202 SmtUtils]: Spent 877.00 ms on a formula simplification that was a NOOP. DAG size: 378 [2021-02-19 20:27:23,456 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:23,481 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 43 treesize of output 29 [2021-02-19 20:27:23,485 INFO L550 ElimStorePlain]: Start of recursive call 13: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:23,504 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 52 treesize of output 36 [2021-02-19 20:27:23,512 INFO L550 ElimStorePlain]: Start of recursive call 14: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:24,372 WARN L202 SmtUtils]: Spent 859.00 ms on a formula simplification that was a NOOP. DAG size: 381 [2021-02-19 20:27:24,373 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:24,398 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 50 treesize of output 36 [2021-02-19 20:27:24,402 INFO L550 ElimStorePlain]: Start of recursive call 15: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:24,423 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 29 [2021-02-19 20:27:24,426 INFO L550 ElimStorePlain]: Start of recursive call 16: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:25,314 WARN L202 SmtUtils]: Spent 887.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2021-02-19 20:27:25,315 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:25,338 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 52 treesize of output 34 [2021-02-19 20:27:25,343 INFO L550 ElimStorePlain]: Start of recursive call 17: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:25,362 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 39 treesize of output 25 [2021-02-19 20:27:25,366 INFO L550 ElimStorePlain]: Start of recursive call 18: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:26,185 WARN L202 SmtUtils]: Spent 818.00 ms on a formula simplification that was a NOOP. DAG size: 375 [2021-02-19 20:27:26,185 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:26,212 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 43 treesize of output 29 [2021-02-19 20:27:26,216 INFO L550 ElimStorePlain]: Start of recursive call 19: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:26,236 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 52 treesize of output 36 [2021-02-19 20:27:26,243 INFO L550 ElimStorePlain]: Start of recursive call 20: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:27,116 WARN L202 SmtUtils]: Spent 872.00 ms on a formula simplification that was a NOOP. DAG size: 377 [2021-02-19 20:27:27,117 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:27,143 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 37 treesize of output 25 [2021-02-19 20:27:27,146 INFO L550 ElimStorePlain]: Start of recursive call 21: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:27,167 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 50 treesize of output 34 [2021-02-19 20:27:27,170 INFO L550 ElimStorePlain]: Start of recursive call 22: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:27,983 WARN L202 SmtUtils]: Spent 811.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2021-02-19 20:27:27,983 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:28,027 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 37 treesize of output 25 [2021-02-19 20:27:28,030 INFO L550 ElimStorePlain]: Start of recursive call 23: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:28,049 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 44 treesize of output 30 [2021-02-19 20:27:28,052 INFO L550 ElimStorePlain]: Start of recursive call 24: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:28,827 WARN L202 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 368 [2021-02-19 20:27:28,828 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:28,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:27:28,853 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:28,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-02-19 20:27:28,878 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:29,641 WARN L202 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2021-02-19 20:27:29,641 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:29,665 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 36 treesize of output 24 [2021-02-19 20:27:29,667 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:30,403 WARN L202 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 355 [2021-02-19 20:27:30,403 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:30,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:27:30,439 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:30,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-02-19 20:27:30,468 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:31,235 WARN L202 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 350 [2021-02-19 20:27:31,236 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:31,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-02-19 20:27:31,263 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:32,034 WARN L202 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 347 [2021-02-19 20:27:32,035 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:32,053 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 49 treesize of output 35 [2021-02-19 20:27:32,055 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:32,804 WARN L202 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2021-02-19 20:27:32,804 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:32,827 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 52 treesize of output 36 [2021-02-19 20:27:32,833 INFO L550 ElimStorePlain]: Start of recursive call 32: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:32,852 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 43 treesize of output 29 [2021-02-19 20:27:32,860 INFO L550 ElimStorePlain]: Start of recursive call 33: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:33,610 WARN L202 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2021-02-19 20:27:33,610 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:33,629 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 45 treesize of output 29 [2021-02-19 20:27:33,631 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:34,944 WARN L202 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 333 DAG size of output: 285 [2021-02-19 20:27:34,945 INFO L628 ElimStorePlain]: treesize reduction 148, result has 88.1 percent of original size [2021-02-19 20:27:34,975 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 50 treesize of output 34 [2021-02-19 20:27:34,979 INFO L550 ElimStorePlain]: Start of recursive call 35: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:34,996 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 37 treesize of output 25 [2021-02-19 20:27:34,999 INFO L550 ElimStorePlain]: Start of recursive call 36: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:35,657 WARN L202 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2021-02-19 20:27:35,658 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:35,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:27:35,690 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:35,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-02-19 20:27:35,711 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:36,327 WARN L202 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 275 [2021-02-19 20:27:36,328 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:36,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-02-19 20:27:36,353 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:36,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:27:36,382 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:37,007 WARN L202 SmtUtils]: Spent 623.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2021-02-19 20:27:37,007 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:37,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-02-19 20:27:37,032 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:37,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2021-02-19 20:27:37,054 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:37,658 WARN L202 SmtUtils]: Spent 603.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2021-02-19 20:27:37,659 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:37,659 INFO L518 ElimStorePlain]: Eliminatee v_prenex_83 vanished before elimination [2021-02-19 20:27:37,680 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 49 treesize of output 35 [2021-02-19 20:27:37,683 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:37,700 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 40 treesize of output 28 [2021-02-19 20:27:37,702 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:38,778 WARN L202 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 260 DAG size of output: 259 [2021-02-19 20:27:38,779 INFO L628 ElimStorePlain]: treesize reduction 49, result has 95.1 percent of original size [2021-02-19 20:27:38,799 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 50 treesize of output 36 [2021-02-19 20:27:38,803 INFO L550 ElimStorePlain]: Start of recursive call 45: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:38,818 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 29 [2021-02-19 20:27:38,822 INFO L550 ElimStorePlain]: Start of recursive call 46: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:39,375 WARN L202 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2021-02-19 20:27:39,375 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:39,390 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 51 treesize of output 33 [2021-02-19 20:27:39,393 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:39,942 WARN L202 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 140 [2021-02-19 20:27:39,943 INFO L628 ElimStorePlain]: treesize reduction 389, result has 56.2 percent of original size [2021-02-19 20:27:39,952 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 42 treesize of output 28 [2021-02-19 20:27:39,958 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:40,180 WARN L202 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-02-19 20:27:40,180 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:40,180 INFO L518 ElimStorePlain]: Eliminatee v_prenex_81 vanished before elimination [2021-02-19 20:27:40,190 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 44 treesize of output 28 [2021-02-19 20:27:40,198 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:40,526 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 114 [2021-02-19 20:27:40,526 INFO L628 ElimStorePlain]: treesize reduction 105, result has 76.8 percent of original size [2021-02-19 20:27:40,527 INFO L518 ElimStorePlain]: Eliminatee v_prenex_80 vanished before elimination [2021-02-19 20:27:40,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-02-19 20:27:40,542 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:40,696 WARN L202 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-02-19 20:27:40,696 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:40,705 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 29 [2021-02-19 20:27:40,710 INFO L550 ElimStorePlain]: Start of recursive call 51: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:40,859 WARN L202 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-02-19 20:27:40,860 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:40,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2021-02-19 20:27:40,872 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:41,017 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-19 20:27:41,018 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:41,018 INFO L518 ElimStorePlain]: Eliminatee v_prenex_64 vanished before elimination [2021-02-19 20:27:41,018 INFO L518 ElimStorePlain]: Eliminatee v_prenex_85 vanished before elimination [2021-02-19 20:27:41,018 INFO L518 ElimStorePlain]: Eliminatee v_prenex_63 vanished before elimination [2021-02-19 20:27:41,018 INFO L518 ElimStorePlain]: Eliminatee v_prenex_84 vanished before elimination [2021-02-19 20:27:41,018 INFO L518 ElimStorePlain]: Eliminatee v_prenex_62 vanished before elimination [2021-02-19 20:27:41,026 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 39 treesize of output 25 [2021-02-19 20:27:41,030 INFO L550 ElimStorePlain]: Start of recursive call 53: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:41,169 WARN L202 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-19 20:27:41,169 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:41,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:27:41,182 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:41,319 WARN L202 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-19 20:27:41,319 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:41,327 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 51 treesize of output 35 [2021-02-19 20:27:41,329 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:41,453 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-02-19 20:27:41,454 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:41,454 INFO L518 ElimStorePlain]: Eliminatee v_prenex_89 vanished before elimination [2021-02-19 20:27:41,461 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 57 treesize of output 37 [2021-02-19 20:27:41,463 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:41,637 WARN L202 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2021-02-19 20:27:41,638 INFO L628 ElimStorePlain]: treesize reduction 65, result has 74.7 percent of original size [2021-02-19 20:27:41,643 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 38 treesize of output 24 [2021-02-19 20:27:41,645 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:41,724 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:41,727 INFO L550 ElimStorePlain]: Start of recursive call 1: 48 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-02-19 20:27:41,727 INFO L247 ElimStorePlain]: Needed 57 recursive calls to eliminate 48 variables, input treesize:2337, output treesize:132 [2021-02-19 20:27:42,360 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-02-19 20:27:42,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 29 [2021-02-19 20:27:42,370 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:42,409 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-02-19 20:27:42,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 26 [2021-02-19 20:27:42,419 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:42,575 WARN L202 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 23 [2021-02-19 20:27:42,576 INFO L628 ElimStorePlain]: treesize reduction 235, result has 15.8 percent of original size [2021-02-19 20:27:42,576 INFO L518 ElimStorePlain]: Eliminatee v_prenex_98 vanished before elimination [2021-02-19 20:27:42,576 INFO L518 ElimStorePlain]: Eliminatee v_prenex_100 vanished before elimination [2021-02-19 20:27:42,576 INFO L518 ElimStorePlain]: Eliminatee v_prenex_99 vanished before elimination [2021-02-19 20:27:42,580 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-02-19 20:27:42,580 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:301, output treesize:50 [2021-02-19 20:27:42,701 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:27:42,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:27:42,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2021-02-19 20:27:42,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606983064] [2021-02-19 20:27:42,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-02-19 20:27:42,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:27:42,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-02-19 20:27:42,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2021-02-19 20:27:42,703 INFO L87 Difference]: Start difference. First operand 5803 states and 20835 transitions. Second operand has 27 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:27:43,063 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2021-02-19 20:27:43,394 WARN L202 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2021-02-19 20:27:43,774 WARN L202 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-02-19 20:27:44,511 WARN L202 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2021-02-19 20:27:44,920 WARN L202 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2021-02-19 20:27:45,810 WARN L202 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2021-02-19 20:27:46,090 WARN L202 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2021-02-19 20:27:46,439 WARN L202 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2021-02-19 20:27:46,723 WARN L202 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2021-02-19 20:27:46,907 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2021-02-19 20:27:47,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:27:47,066 INFO L93 Difference]: Finished difference Result 8411 states and 29291 transitions. [2021-02-19 20:27:47,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-19 20:27:47,067 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 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 33 [2021-02-19 20:27:47,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:27:47,088 INFO L225 Difference]: With dead ends: 8411 [2021-02-19 20:27:47,088 INFO L226 Difference]: Without dead ends: 8158 [2021-02-19 20:27:47,089 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=261, Invalid=1379, Unknown=0, NotChecked=0, Total=1640 [2021-02-19 20:27:47,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8158 states. [2021-02-19 20:27:47,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8158 to 5828. [2021-02-19 20:27:47,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5828 states, 5827 states have (on average 3.591384932212116) internal successors, (20927), 5827 states have internal predecessors, (20927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:27:47,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5828 states to 5828 states and 20927 transitions. [2021-02-19 20:27:47,232 INFO L78 Accepts]: Start accepts. Automaton has 5828 states and 20927 transitions. Word has length 33 [2021-02-19 20:27:47,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:27:47,232 INFO L480 AbstractCegarLoop]: Abstraction has 5828 states and 20927 transitions. [2021-02-19 20:27:47,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:27:47,232 INFO L276 IsEmpty]: Start isEmpty. Operand 5828 states and 20927 transitions. [2021-02-19 20:27:47,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-19 20:27:47,245 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:27:47,245 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:27:47,468 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 20:27:47,468 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:27:47,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:27:47,468 INFO L82 PathProgramCache]: Analyzing trace with hash 835057743, now seen corresponding path program 16 times [2021-02-19 20:27:47,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:27:47,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068742770] [2021-02-19 20:27:47,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:27:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:27:48,133 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 51 [2021-02-19 20:27:48,414 WARN L202 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 45 [2021-02-19 20:27:48,674 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 41 [2021-02-19 20:27:48,851 WARN L202 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 33 [2021-02-19 20:27:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:27:48,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068742770] [2021-02-19 20:27:48,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127143061] [2021-02-19 20:27:48,936 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 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 [2021-02-19 20:27:48,964 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 20:27:48,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 20:27:48,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 28 conjunts are in the unsatisfiable core [2021-02-19 20:27:48,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:27:49,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:27:49,222 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:49,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:27:49,234 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:49,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:27:49,245 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:49,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:27:49,256 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:49,375 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-02-19 20:27:49,375 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:49,377 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-02-19 20:27:49,377 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:269, output treesize:265 [2021-02-19 20:27:49,527 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-02-19 20:27:50,040 WARN L202 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-02-19 20:27:50,469 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 48 treesize of output 36 [2021-02-19 20:27:50,474 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:50,497 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 52 treesize of output 36 [2021-02-19 20:27:50,507 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:51,150 WARN L202 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 315 [2021-02-19 20:27:51,150 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:51,172 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 42 treesize of output 30 [2021-02-19 20:27:51,176 INFO L550 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:51,192 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 42 treesize of output 30 [2021-02-19 20:27:51,196 INFO L550 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:51,830 WARN L202 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2021-02-19 20:27:51,831 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:51,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-02-19 20:27:51,857 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:51,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-02-19 20:27:51,882 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:52,409 WARN L202 SmtUtils]: Spent 527.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2021-02-19 20:27:52,410 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:52,431 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 52 treesize of output 36 [2021-02-19 20:27:52,435 INFO L550 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:52,453 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 48 treesize of output 36 [2021-02-19 20:27:52,456 INFO L550 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:53,000 WARN L202 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2021-02-19 20:27:53,001 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:53,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-02-19 20:27:53,026 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:53,616 WARN L202 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2021-02-19 20:27:53,616 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:53,641 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 51 treesize of output 35 [2021-02-19 20:27:53,655 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:53,672 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 49 treesize of output 35 [2021-02-19 20:27:53,674 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:54,219 WARN L202 SmtUtils]: Spent 544.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2021-02-19 20:27:54,220 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:54,243 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 44 treesize of output 30 [2021-02-19 20:27:54,246 INFO L550 ElimStorePlain]: Start of recursive call 13: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:54,264 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 44 treesize of output 30 [2021-02-19 20:27:54,269 INFO L550 ElimStorePlain]: Start of recursive call 14: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:27:54,808 WARN L202 SmtUtils]: Spent 538.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2021-02-19 20:27:54,808 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:54,833 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 53 treesize of output 37 [2021-02-19 20:27:54,836 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:54,853 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 47 treesize of output 33 [2021-02-19 20:27:54,855 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:55,393 WARN L202 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 163 [2021-02-19 20:27:55,394 INFO L628 ElimStorePlain]: treesize reduction 374, result has 59.5 percent of original size [2021-02-19 20:27:55,394 INFO L518 ElimStorePlain]: Eliminatee v_prenex_103 vanished before elimination [2021-02-19 20:27:55,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-02-19 20:27:55,412 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:55,673 WARN L202 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-19 20:27:55,673 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:55,684 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 49 treesize of output 35 [2021-02-19 20:27:55,687 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:55,917 WARN L202 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-19 20:27:55,918 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:55,918 INFO L518 ElimStorePlain]: Eliminatee v_prenex_104 vanished before elimination [2021-02-19 20:27:55,927 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 51 treesize of output 33 [2021-02-19 20:27:55,929 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:56,230 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 115 [2021-02-19 20:27:56,231 INFO L628 ElimStorePlain]: treesize reduction 146, result has 70.8 percent of original size [2021-02-19 20:27:56,231 INFO L518 ElimStorePlain]: Eliminatee v_prenex_105 vanished before elimination [2021-02-19 20:27:56,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-02-19 20:27:56,245 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:56,387 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-02-19 20:27:56,388 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:56,388 INFO L518 ElimStorePlain]: Eliminatee v_prenex_106 vanished before elimination [2021-02-19 20:27:56,388 INFO L518 ElimStorePlain]: Eliminatee v_prenex_118 vanished before elimination [2021-02-19 20:27:56,388 INFO L518 ElimStorePlain]: Eliminatee v_prenex_119 vanished before elimination [2021-02-19 20:27:56,396 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 51 treesize of output 35 [2021-02-19 20:27:56,399 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:56,528 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-02-19 20:27:56,529 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:56,529 INFO L518 ElimStorePlain]: Eliminatee v_prenex_131 vanished before elimination [2021-02-19 20:27:56,529 INFO L518 ElimStorePlain]: Eliminatee v_prenex_132 vanished before elimination [2021-02-19 20:27:56,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-02-19 20:27:56,544 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:56,679 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-02-19 20:27:56,680 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:56,680 INFO L518 ElimStorePlain]: Eliminatee v_prenex_133 vanished before elimination [2021-02-19 20:27:56,687 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 51 treesize of output 35 [2021-02-19 20:27:56,690 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:56,808 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-19 20:27:56,809 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:56,816 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 57 treesize of output 37 [2021-02-19 20:27:56,818 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:57,021 WARN L202 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2021-02-19 20:27:57,022 INFO L628 ElimStorePlain]: treesize reduction 32, result has 89.2 percent of original size [2021-02-19 20:27:57,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-02-19 20:27:57,034 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:57,132 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:57,138 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 51 treesize of output 35 [2021-02-19 20:27:57,141 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:57,230 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:57,236 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 57 treesize of output 37 [2021-02-19 20:27:57,239 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:57,326 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:27:57,326 INFO L518 ElimStorePlain]: Eliminatee v_prenex_116 vanished before elimination [2021-02-19 20:27:57,326 INFO L518 ElimStorePlain]: Eliminatee v_prenex_117 vanished before elimination [2021-02-19 20:27:57,331 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 57 treesize of output 37 [2021-02-19 20:27:57,335 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:57,414 INFO L628 ElimStorePlain]: treesize reduction 102, result has 42.7 percent of original size [2021-02-19 20:27:57,414 INFO L518 ElimStorePlain]: Eliminatee v_prenex_107 vanished before elimination [2021-02-19 20:27:57,414 INFO L518 ElimStorePlain]: Eliminatee A vanished before elimination [2021-02-19 20:27:57,414 INFO L518 ElimStorePlain]: Eliminatee v_prenex_108 vanished before elimination [2021-02-19 20:27:57,414 INFO L518 ElimStorePlain]: Eliminatee B vanished before elimination [2021-02-19 20:27:57,414 INFO L518 ElimStorePlain]: Eliminatee v_prenex_109 vanished before elimination [2021-02-19 20:27:57,424 INFO L550 ElimStorePlain]: Start of recursive call 1: 36 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-02-19 20:27:57,424 INFO L247 ElimStorePlain]: Needed 28 recursive calls to eliminate 36 variables, input treesize:1169, output treesize:70 [2021-02-19 20:27:57,731 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 20 treesize of output 14 [2021-02-19 20:27:57,735 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:57,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 11 [2021-02-19 20:27:57,746 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:27:57,768 INFO L628 ElimStorePlain]: treesize reduction 73, result has 6.4 percent of original size [2021-02-19 20:27:57,768 INFO L518 ElimStorePlain]: Eliminatee v_prenex_134 vanished before elimination [2021-02-19 20:27:57,768 INFO L518 ElimStorePlain]: Eliminatee v_prenex_135 vanished before elimination [2021-02-19 20:27:57,770 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 20:27:57,770 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:108, output treesize:5 [2021-02-19 20:27:57,793 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:27:57,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:27:57,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2021-02-19 20:27:57,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457841026] [2021-02-19 20:27:57,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-19 20:27:57,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:27:57,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-19 20:27:57,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2021-02-19 20:27:57,795 INFO L87 Difference]: Start difference. First operand 5828 states and 20927 transitions. Second operand has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:27:58,111 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2021-02-19 20:27:58,296 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 47 [2021-02-19 20:27:58,846 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2021-02-19 20:28:00,139 WARN L202 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2021-02-19 20:28:01,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:28:01,097 INFO L93 Difference]: Finished difference Result 10027 states and 34871 transitions. [2021-02-19 20:28:01,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-19 20:28:01,099 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 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 33 [2021-02-19 20:28:01,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:28:01,119 INFO L225 Difference]: With dead ends: 10027 [2021-02-19 20:28:01,119 INFO L226 Difference]: Without dead ends: 9878 [2021-02-19 20:28:01,119 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=182, Invalid=874, Unknown=0, NotChecked=0, Total=1056 [2021-02-19 20:28:01,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9878 states. [2021-02-19 20:28:01,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9878 to 5995. [2021-02-19 20:28:01,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5995 states, 5994 states have (on average 3.5820820820820822) internal successors, (21471), 5994 states have internal predecessors, (21471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:28:01,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5995 states to 5995 states and 21471 transitions. [2021-02-19 20:28:01,258 INFO L78 Accepts]: Start accepts. Automaton has 5995 states and 21471 transitions. Word has length 33 [2021-02-19 20:28:01,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:28:01,259 INFO L480 AbstractCegarLoop]: Abstraction has 5995 states and 21471 transitions. [2021-02-19 20:28:01,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:28:01,259 INFO L276 IsEmpty]: Start isEmpty. Operand 5995 states and 21471 transitions. [2021-02-19 20:28:01,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-19 20:28:01,273 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:28:01,273 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:28:01,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable321 [2021-02-19 20:28:01,489 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:28:01,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:28:01,489 INFO L82 PathProgramCache]: Analyzing trace with hash 2031370185, now seen corresponding path program 17 times [2021-02-19 20:28:01,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:28:01,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084427269] [2021-02-19 20:28:01,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:28:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:28:02,032 WARN L202 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 33 [2021-02-19 20:28:02,447 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 39 [2021-02-19 20:28:02,925 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:28:02,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084427269] [2021-02-19 20:28:02,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116812141] [2021-02-19 20:28:02,926 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 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 [2021-02-19 20:28:02,996 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-02-19 20:28:02,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 20:28:02,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 31 conjunts are in the unsatisfiable core [2021-02-19 20:28:02,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:28:03,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-02-19 20:28:03,269 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:03,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-02-19 20:28:03,276 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:03,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-02-19 20:28:03,283 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:03,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-02-19 20:28:03,291 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:03,399 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-02-19 20:28:03,400 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:03,401 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-02-19 20:28:03,401 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:241, output treesize:237 [2021-02-19 20:28:04,083 WARN L202 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-02-19 20:28:04,748 WARN L202 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-02-19 20:28:06,176 WARN L202 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2021-02-19 20:28:06,893 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_170, v_prenex_161, v_C_20, v_prenex_173, v_prenex_164, v_prenex_176, v_prenex_154, v_prenex_167, v_prenex_157, v_prenex_158], 3=[v_prenex_160, v_prenex_140, v_prenex_162, v_prenex_141, v_prenex_163, v_prenex_142, v_prenex_143, v_prenex_165, v_prenex_144, v_prenex_166, v_prenex_145, v_prenex_168, v_prenex_146, v_prenex_169, v_prenex_147, v_prenex_148, v_prenex_149, v_prenex_171, v_prenex_150, v_prenex_172, v_prenex_151, v_prenex_174, v_prenex_152, v_prenex_175, v_prenex_153, v_prenex_177, v_prenex_155, v_prenex_178, v_prenex_156, v_prenex_136, v_prenex_137, v_prenex_159, v_prenex_138, v_prenex_139, A, B]} [2021-02-19 20:28:06,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:06,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2021-02-19 20:28:06,943 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:06,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:06,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2021-02-19 20:28:06,992 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:07,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:07,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2021-02-19 20:28:07,040 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:07,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:07,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2021-02-19 20:28:07,094 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:07,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:07,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2021-02-19 20:28:07,141 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:07,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:07,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2021-02-19 20:28:07,178 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:07,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:07,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2021-02-19 20:28:07,219 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:07,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:07,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2021-02-19 20:28:07,256 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:07,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:07,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2021-02-19 20:28:07,295 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:07,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:07,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2021-02-19 20:28:07,335 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:07,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:07,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2021-02-19 20:28:07,374 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:07,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:07,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2021-02-19 20:28:07,411 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:08,875 WARN L202 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 426 [2021-02-19 20:28:08,876 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:08,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:08,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:28:08,917 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:10,467 WARN L202 SmtUtils]: Spent 1.55 s on a formula simplification that was a NOOP. DAG size: 423 [2021-02-19 20:28:10,468 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:10,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:10,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 41 [2021-02-19 20:28:10,506 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:12,070 WARN L202 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 420 [2021-02-19 20:28:12,070 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:12,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:12,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:28:12,111 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:12,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:12,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:28:12,160 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:13,739 WARN L202 SmtUtils]: Spent 1.58 s on a formula simplification that was a NOOP. DAG size: 417 [2021-02-19 20:28:13,740 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:13,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:13,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 41 [2021-02-19 20:28:13,778 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:15,234 WARN L202 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 414 [2021-02-19 20:28:15,235 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:15,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:15,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:28:15,280 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:15,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:15,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:28:15,318 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:16,613 WARN L202 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 411 [2021-02-19 20:28:16,614 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:16,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:16,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:28:16,651 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:18,248 WARN L202 SmtUtils]: Spent 1.60 s on a formula simplification that was a NOOP. DAG size: 408 [2021-02-19 20:28:18,249 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:18,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:18,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:28:18,285 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:18,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:18,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:28:18,320 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:19,827 WARN L202 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 405 [2021-02-19 20:28:19,828 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:19,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:19,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 41 [2021-02-19 20:28:19,864 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:21,377 WARN L202 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 402 [2021-02-19 20:28:21,378 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:21,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:21,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 41 [2021-02-19 20:28:21,415 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:23,004 WARN L202 SmtUtils]: Spent 1.59 s on a formula simplification that was a NOOP. DAG size: 400 [2021-02-19 20:28:23,004 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:23,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:23,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:23,031 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 69 treesize of output 49 [2021-02-19 20:28:23,035 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:24,545 WARN L202 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 393 [2021-02-19 20:28:24,546 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:24,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:24,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:24,584 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 52 treesize of output 32 [2021-02-19 20:28:24,587 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:24,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:24,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:24,615 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 50 treesize of output 32 [2021-02-19 20:28:24,619 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:26,063 WARN L202 SmtUtils]: Spent 1.44 s on a formula simplification that was a NOOP. DAG size: 388 [2021-02-19 20:28:26,064 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:26,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:26,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:26,092 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 59 treesize of output 39 [2021-02-19 20:28:26,095 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:27,317 WARN L202 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 383 [2021-02-19 20:28:27,318 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:27,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:27,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:27,345 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 44 treesize of output 26 [2021-02-19 20:28:27,347 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:27,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:27,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:27,370 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 50 treesize of output 30 [2021-02-19 20:28:27,372 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:29,241 WARN L202 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 374 DAG size of output: 266 [2021-02-19 20:28:29,243 INFO L628 ElimStorePlain]: treesize reduction 603, result has 67.5 percent of original size [2021-02-19 20:28:29,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:29,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:29,267 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 63 treesize of output 39 [2021-02-19 20:28:29,271 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:30,205 WARN L202 SmtUtils]: Spent 933.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2021-02-19 20:28:30,206 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:30,206 INFO L518 ElimStorePlain]: Eliminatee v_prenex_142 vanished before elimination [2021-02-19 20:28:30,206 INFO L518 ElimStorePlain]: Eliminatee v_prenex_143 vanished before elimination [2021-02-19 20:28:30,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:30,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:30,228 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 72 treesize of output 50 [2021-02-19 20:28:30,233 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:31,062 WARN L202 SmtUtils]: Spent 828.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2021-02-19 20:28:31,063 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:31,063 INFO L518 ElimStorePlain]: Eliminatee v_prenex_144 vanished before elimination [2021-02-19 20:28:31,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:31,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:31,084 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 61 treesize of output 37 [2021-02-19 20:28:31,087 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:31,828 WARN L202 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 122 [2021-02-19 20:28:31,829 INFO L628 ElimStorePlain]: treesize reduction 648, result has 43.8 percent of original size [2021-02-19 20:28:31,829 INFO L518 ElimStorePlain]: Eliminatee v_prenex_145 vanished before elimination [2021-02-19 20:28:31,829 INFO L518 ElimStorePlain]: Eliminatee v_prenex_168 vanished before elimination [2021-02-19 20:28:31,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:31,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:31,844 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 65 treesize of output 41 [2021-02-19 20:28:31,847 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:32,128 WARN L202 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-02-19 20:28:32,129 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:32,129 INFO L518 ElimStorePlain]: Eliminatee v_prenex_169 vanished before elimination [2021-02-19 20:28:32,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:32,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:32,156 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 52 treesize of output 30 [2021-02-19 20:28:32,160 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:32,643 WARN L202 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 63 [2021-02-19 20:28:32,644 INFO L628 ElimStorePlain]: treesize reduction 208, result has 53.7 percent of original size [2021-02-19 20:28:32,644 INFO L518 ElimStorePlain]: Eliminatee v_prenex_148 vanished before elimination [2021-02-19 20:28:32,644 INFO L518 ElimStorePlain]: Eliminatee v_prenex_149 vanished before elimination [2021-02-19 20:28:32,644 INFO L518 ElimStorePlain]: Eliminatee v_prenex_171 vanished before elimination [2021-02-19 20:28:32,644 INFO L518 ElimStorePlain]: Eliminatee v_prenex_150 vanished before elimination [2021-02-19 20:28:32,644 INFO L518 ElimStorePlain]: Eliminatee v_prenex_172 vanished before elimination [2021-02-19 20:28:32,644 INFO L518 ElimStorePlain]: Eliminatee v_prenex_151 vanished before elimination [2021-02-19 20:28:32,644 INFO L518 ElimStorePlain]: Eliminatee v_prenex_174 vanished before elimination [2021-02-19 20:28:32,645 INFO L518 ElimStorePlain]: Eliminatee v_prenex_152 vanished before elimination [2021-02-19 20:28:32,645 INFO L518 ElimStorePlain]: Eliminatee v_prenex_175 vanished before elimination [2021-02-19 20:28:32,645 INFO L518 ElimStorePlain]: Eliminatee v_prenex_153 vanished before elimination [2021-02-19 20:28:32,645 INFO L518 ElimStorePlain]: Eliminatee v_prenex_177 vanished before elimination [2021-02-19 20:28:32,645 INFO L518 ElimStorePlain]: Eliminatee v_prenex_155 vanished before elimination [2021-02-19 20:28:32,645 INFO L518 ElimStorePlain]: Eliminatee v_prenex_178 vanished before elimination [2021-02-19 20:28:32,645 INFO L518 ElimStorePlain]: Eliminatee v_prenex_156 vanished before elimination [2021-02-19 20:28:32,645 INFO L518 ElimStorePlain]: Eliminatee v_prenex_136 vanished before elimination [2021-02-19 20:28:32,645 INFO L518 ElimStorePlain]: Eliminatee v_prenex_137 vanished before elimination [2021-02-19 20:28:32,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:32,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:32,655 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 63 treesize of output 39 [2021-02-19 20:28:32,658 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:32,781 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 24 [2021-02-19 20:28:32,782 INFO L628 ElimStorePlain]: treesize reduction 122, result has 39.0 percent of original size [2021-02-19 20:28:32,782 INFO L518 ElimStorePlain]: Eliminatee v_prenex_138 vanished before elimination [2021-02-19 20:28:32,782 INFO L518 ElimStorePlain]: Eliminatee v_prenex_139 vanished before elimination [2021-02-19 20:28:32,782 INFO L518 ElimStorePlain]: Eliminatee A vanished before elimination [2021-02-19 20:28:32,782 INFO L518 ElimStorePlain]: Eliminatee B vanished before elimination [2021-02-19 20:28:32,784 INFO L550 ElimStorePlain]: Start of recursive call 1: 46 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-02-19 20:28:32,784 INFO L247 ElimStorePlain]: Needed 37 recursive calls to eliminate 46 variables, input treesize:1987, output treesize:78 [2021-02-19 20:28:33,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 17 [2021-02-19 20:28:33,009 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:33,015 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 20 treesize of output 14 [2021-02-19 20:28:33,018 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:33,041 INFO L628 ElimStorePlain]: treesize reduction 61, result has 7.6 percent of original size [2021-02-19 20:28:33,041 INFO L518 ElimStorePlain]: Eliminatee C vanished before elimination [2021-02-19 20:28:33,041 INFO L518 ElimStorePlain]: Eliminatee v_prenex_179 vanished before elimination [2021-02-19 20:28:33,042 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 20:28:33,043 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:108, output treesize:5 [2021-02-19 20:28:33,073 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:28:33,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:28:33,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 24 [2021-02-19 20:28:33,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725993169] [2021-02-19 20:28:33,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-19 20:28:33,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:28:33,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-19 20:28:33,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2021-02-19 20:28:33,075 INFO L87 Difference]: Start difference. First operand 5995 states and 21471 transitions. Second operand has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:28:33,540 WARN L202 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2021-02-19 20:28:33,802 WARN L202 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2021-02-19 20:28:34,609 WARN L202 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2021-02-19 20:28:36,649 WARN L202 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 91 DAG size of output: 67 [2021-02-19 20:28:37,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:28:37,803 INFO L93 Difference]: Finished difference Result 8627 states and 29955 transitions. [2021-02-19 20:28:37,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-19 20:28:37,805 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 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 33 [2021-02-19 20:28:37,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:28:37,820 INFO L225 Difference]: With dead ends: 8627 [2021-02-19 20:28:37,821 INFO L226 Difference]: Without dead ends: 8310 [2021-02-19 20:28:37,821 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=204, Invalid=986, Unknown=0, NotChecked=0, Total=1190 [2021-02-19 20:28:37,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8310 states. [2021-02-19 20:28:37,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8310 to 6027. [2021-02-19 20:28:37,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6027 states, 6026 states have (on average 3.576501825423166) internal successors, (21552), 6026 states have internal predecessors, (21552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:28:37,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6027 states to 6027 states and 21552 transitions. [2021-02-19 20:28:37,932 INFO L78 Accepts]: Start accepts. Automaton has 6027 states and 21552 transitions. Word has length 33 [2021-02-19 20:28:37,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:28:37,933 INFO L480 AbstractCegarLoop]: Abstraction has 6027 states and 21552 transitions. [2021-02-19 20:28:37,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:28:37,934 INFO L276 IsEmpty]: Start isEmpty. Operand 6027 states and 21552 transitions. [2021-02-19 20:28:37,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-19 20:28:37,947 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:28:37,947 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:28:38,170 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable353 [2021-02-19 20:28:38,170 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:28:38,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:28:38,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1285432143, now seen corresponding path program 18 times [2021-02-19 20:28:38,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:28:38,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522353561] [2021-02-19 20:28:38,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:28:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:28:39,166 WARN L202 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 57 [2021-02-19 20:28:39,724 WARN L202 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 51 [2021-02-19 20:28:40,359 WARN L202 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 57 [2021-02-19 20:28:40,930 WARN L202 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 47 [2021-02-19 20:28:41,115 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 22 [2021-02-19 20:28:41,278 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:28:41,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522353561] [2021-02-19 20:28:41,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776772782] [2021-02-19 20:28:41,278 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 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 [2021-02-19 20:28:41,308 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-02-19 20:28:41,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 20:28:41,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 27 conjunts are in the unsatisfiable core [2021-02-19 20:28:41,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:28:41,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:28:41,720 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:41,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:28:41,734 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:41,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:28:41,746 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:41,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:28:41,759 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:41,955 WARN L202 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-02-19 20:28:41,956 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:41,959 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-02-19 20:28:41,959 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:277, output treesize:273 [2021-02-19 20:28:42,221 WARN L202 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-02-19 20:28:42,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:42,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:28:42,329 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:42,539 WARN L202 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-02-19 20:28:42,540 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:42,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:42,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:28:42,559 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:42,782 WARN L202 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-02-19 20:28:42,783 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:42,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:42,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:28:42,803 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:43,010 WARN L202 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-19 20:28:43,011 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:43,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:43,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:28:43,030 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:43,194 WARN L202 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-02-19 20:28:43,195 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:43,197 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-02-19 20:28:43,197 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:309, output treesize:305 [2021-02-19 20:28:43,357 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-02-19 20:28:43,963 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 51 treesize of output 35 [2021-02-19 20:28:43,967 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:44,824 WARN L202 SmtUtils]: Spent 856.00 ms on a formula simplification that was a NOOP. DAG size: 345 [2021-02-19 20:28:44,825 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:44,844 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 53 treesize of output 35 [2021-02-19 20:28:44,849 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:45,693 WARN L202 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 166 [2021-02-19 20:28:45,694 INFO L628 ElimStorePlain]: treesize reduction 568, result has 48.6 percent of original size [2021-02-19 20:28:45,694 INFO L518 ElimStorePlain]: Eliminatee v_prenex_186 vanished before elimination [2021-02-19 20:28:45,694 INFO L518 ElimStorePlain]: Eliminatee v_prenex_187 vanished before elimination [2021-02-19 20:28:45,694 INFO L518 ElimStorePlain]: Eliminatee v_prenex_188 vanished before elimination [2021-02-19 20:28:45,694 INFO L518 ElimStorePlain]: Eliminatee v_prenex_189 vanished before elimination [2021-02-19 20:28:45,705 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 51 treesize of output 35 [2021-02-19 20:28:45,708 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:46,058 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2021-02-19 20:28:46,059 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:46,070 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 57 treesize of output 37 [2021-02-19 20:28:46,090 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:46,525 WARN L202 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-02-19 20:28:46,525 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:46,537 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 49 treesize of output 35 [2021-02-19 20:28:46,542 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:46,867 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2021-02-19 20:28:46,868 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:46,879 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 51 treesize of output 33 [2021-02-19 20:28:46,883 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:47,321 WARN L202 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 88 [2021-02-19 20:28:47,322 INFO L628 ElimStorePlain]: treesize reduction 140, result has 68.1 percent of original size [2021-02-19 20:28:47,323 INFO L518 ElimStorePlain]: Eliminatee v_prenex_204 vanished before elimination [2021-02-19 20:28:47,323 INFO L518 ElimStorePlain]: Eliminatee v_prenex_205 vanished before elimination [2021-02-19 20:28:47,323 INFO L518 ElimStorePlain]: Eliminatee v_prenex_190 vanished before elimination [2021-02-19 20:28:47,323 INFO L518 ElimStorePlain]: Eliminatee v_prenex_191 vanished before elimination [2021-02-19 20:28:47,332 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 51 treesize of output 35 [2021-02-19 20:28:47,335 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:47,560 WARN L202 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-02-19 20:28:47,561 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:47,569 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 55 treesize of output 35 [2021-02-19 20:28:47,572 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:47,740 WARN L202 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 27 [2021-02-19 20:28:47,741 INFO L628 ElimStorePlain]: treesize reduction 150, result has 39.8 percent of original size [2021-02-19 20:28:47,741 INFO L518 ElimStorePlain]: Eliminatee v_prenex_194 vanished before elimination [2021-02-19 20:28:47,741 INFO L518 ElimStorePlain]: Eliminatee v_prenex_195 vanished before elimination [2021-02-19 20:28:47,741 INFO L518 ElimStorePlain]: Eliminatee v_prenex_196 vanished before elimination [2021-02-19 20:28:47,741 INFO L518 ElimStorePlain]: Eliminatee v_prenex_197 vanished before elimination [2021-02-19 20:28:47,741 INFO L518 ElimStorePlain]: Eliminatee v_prenex_198 vanished before elimination [2021-02-19 20:28:47,741 INFO L518 ElimStorePlain]: Eliminatee v_prenex_210 vanished before elimination [2021-02-19 20:28:47,741 INFO L518 ElimStorePlain]: Eliminatee v_prenex_199 vanished before elimination [2021-02-19 20:28:47,741 INFO L518 ElimStorePlain]: Eliminatee v_prenex_211 vanished before elimination [2021-02-19 20:28:47,741 INFO L518 ElimStorePlain]: Eliminatee v_prenex_212 vanished before elimination [2021-02-19 20:28:47,741 INFO L518 ElimStorePlain]: Eliminatee v_prenex_213 vanished before elimination [2021-02-19 20:28:47,741 INFO L518 ElimStorePlain]: Eliminatee v_prenex_206 vanished before elimination [2021-02-19 20:28:47,742 INFO L518 ElimStorePlain]: Eliminatee A vanished before elimination [2021-02-19 20:28:47,742 INFO L518 ElimStorePlain]: Eliminatee v_prenex_207 vanished before elimination [2021-02-19 20:28:47,742 INFO L518 ElimStorePlain]: Eliminatee v_prenex_208 vanished before elimination [2021-02-19 20:28:47,742 INFO L518 ElimStorePlain]: Eliminatee B vanished before elimination [2021-02-19 20:28:47,742 INFO L518 ElimStorePlain]: Eliminatee v_prenex_209 vanished before elimination [2021-02-19 20:28:47,744 INFO L550 ElimStorePlain]: Start of recursive call 1: 32 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-02-19 20:28:47,744 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 32 variables, input treesize:1153, output treesize:93 [2021-02-19 20:28:48,357 WARN L202 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2021-02-19 20:28:48,435 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 17 [2021-02-19 20:28:48,439 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:48,445 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 20 treesize of output 14 [2021-02-19 20:28:48,448 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:48,480 INFO L628 ElimStorePlain]: treesize reduction 86, result has 5.5 percent of original size [2021-02-19 20:28:48,480 INFO L518 ElimStorePlain]: Eliminatee v_prenex_214 vanished before elimination [2021-02-19 20:28:48,480 INFO L518 ElimStorePlain]: Eliminatee v_prenex_215 vanished before elimination [2021-02-19 20:28:48,480 INFO L518 ElimStorePlain]: Eliminatee v_prenex_216 vanished before elimination [2021-02-19 20:28:48,482 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 20:28:48,482 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:128, output treesize:5 [2021-02-19 20:28:48,509 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:28:48,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:28:48,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2021-02-19 20:28:48,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828518341] [2021-02-19 20:28:48,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-19 20:28:48,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:28:48,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-19 20:28:48,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2021-02-19 20:28:48,511 INFO L87 Difference]: Start difference. First operand 6027 states and 21552 transitions. Second operand has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:28:48,818 WARN L202 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 36 [2021-02-19 20:28:49,168 WARN L202 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 44 [2021-02-19 20:28:49,969 WARN L202 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2021-02-19 20:28:50,780 WARN L202 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2021-02-19 20:28:51,644 WARN L202 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2021-02-19 20:28:52,057 WARN L202 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2021-02-19 20:28:52,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:28:52,969 INFO L93 Difference]: Finished difference Result 8561 states and 29979 transitions. [2021-02-19 20:28:52,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-19 20:28:52,972 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 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 33 [2021-02-19 20:28:52,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:28:52,989 INFO L225 Difference]: With dead ends: 8561 [2021-02-19 20:28:52,989 INFO L226 Difference]: Without dead ends: 8478 [2021-02-19 20:28:52,989 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2021-02-19 20:28:52,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8478 states. [2021-02-19 20:28:53,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8478 to 6135. [2021-02-19 20:28:53,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6135 states, 6134 states have (on average 3.5758069775024452) internal successors, (21934), 6134 states have internal predecessors, (21934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:28:53,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6135 states to 6135 states and 21934 transitions. [2021-02-19 20:28:53,105 INFO L78 Accepts]: Start accepts. Automaton has 6135 states and 21934 transitions. Word has length 33 [2021-02-19 20:28:53,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:28:53,105 INFO L480 AbstractCegarLoop]: Abstraction has 6135 states and 21934 transitions. [2021-02-19 20:28:53,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:28:53,105 INFO L276 IsEmpty]: Start isEmpty. Operand 6135 states and 21934 transitions. [2021-02-19 20:28:53,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-19 20:28:53,115 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:28:53,115 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:28:53,316 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable403 [2021-02-19 20:28:53,316 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:28:53,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:28:53,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1956565763, now seen corresponding path program 19 times [2021-02-19 20:28:53,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:28:53,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840216930] [2021-02-19 20:28:53,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:28:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:28:54,000 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 41 [2021-02-19 20:28:54,214 WARN L202 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2021-02-19 20:28:54,504 WARN L202 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 48 [2021-02-19 20:28:54,713 WARN L202 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2021-02-19 20:28:54,970 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:28:54,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840216930] [2021-02-19 20:28:54,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337802132] [2021-02-19 20:28:54,971 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 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 [2021-02-19 20:28:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:28:55,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 24 conjunts are in the unsatisfiable core [2021-02-19 20:28:55,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:28:55,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:28:55,439 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:55,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:28:55,457 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:55,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:28:55,471 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:55,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:28:55,487 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:55,709 WARN L202 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-02-19 20:28:55,710 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:55,712 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-02-19 20:28:55,713 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:269, output treesize:265 [2021-02-19 20:28:56,012 WARN L202 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-02-19 20:28:56,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:56,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:28:56,072 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:56,335 WARN L202 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-02-19 20:28:56,336 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:56,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:56,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:28:56,361 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:56,603 WARN L202 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-02-19 20:28:56,604 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:56,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:56,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:28:56,626 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:56,843 WARN L202 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-19 20:28:56,844 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:56,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:56,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:28:56,864 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:57,078 WARN L202 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-02-19 20:28:57,078 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:28:57,081 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-02-19 20:28:57,081 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:301, output treesize:297 [2021-02-19 20:28:57,360 WARN L202 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-02-19 20:28:58,002 WARN L202 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-02-19 20:28:59,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:59,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:59,719 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 50 treesize of output 32 [2021-02-19 20:28:59,723 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:59,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:59,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:59,753 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 59 treesize of output 39 [2021-02-19 20:28:59,757 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:59,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:59,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:59,791 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 55 treesize of output 39 [2021-02-19 20:28:59,795 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:59,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:59,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:59,827 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 46 treesize of output 32 [2021-02-19 20:28:59,832 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:59,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:59,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:59,862 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 55 treesize of output 39 [2021-02-19 20:28:59,866 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:59,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:59,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:59,894 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 50 treesize of output 32 [2021-02-19 20:28:59,898 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:59,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:59,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:59,927 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 59 treesize of output 39 [2021-02-19 20:28:59,931 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-02-19 20:28:59,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:59,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:28:59,951 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 46 treesize of output 32 [2021-02-19 20:28:59,955 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:03,453 WARN L202 SmtUtils]: Spent 3.50 s on a formula simplification. DAG size of input: 143 DAG size of output: 137 [2021-02-19 20:29:03,454 INFO L628 ElimStorePlain]: treesize reduction 340, result has 86.0 percent of original size [2021-02-19 20:29:03,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:03,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:03,484 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 51 treesize of output 31 [2021-02-19 20:29:03,489 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:03,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:03,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:03,519 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 50 treesize of output 30 [2021-02-19 20:29:03,524 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:03,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:03,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:03,553 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 44 treesize of output 26 [2021-02-19 20:29:03,557 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:03,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:03,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:03,586 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 52 treesize of output 30 [2021-02-19 20:29:03,591 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:03,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:03,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:03,619 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 53 treesize of output 31 [2021-02-19 20:29:03,623 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:03,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:03,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:03,653 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 65 treesize of output 39 [2021-02-19 20:29:03,656 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:03,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:03,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:03,685 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 63 treesize of output 39 [2021-02-19 20:29:03,689 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:03,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:03,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:03,706 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 46 treesize of output 26 [2021-02-19 20:29:03,710 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:04,656 WARN L202 SmtUtils]: Spent 945.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 49 [2021-02-19 20:29:04,657 INFO L628 ElimStorePlain]: treesize reduction 1380, result has 21.7 percent of original size [2021-02-19 20:29:04,657 INFO L518 ElimStorePlain]: Eliminatee v_prenex_220 vanished before elimination [2021-02-19 20:29:04,658 INFO L518 ElimStorePlain]: Eliminatee v_prenex_221 vanished before elimination [2021-02-19 20:29:04,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:04,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:04,681 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 50 treesize of output 32 [2021-02-19 20:29:04,686 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:04,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:04,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:04,711 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 50 treesize of output 32 [2021-02-19 20:29:04,715 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:04,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:04,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:04,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 32 [2021-02-19 20:29:04,744 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:04,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:04,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:04,759 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 52 treesize of output 32 [2021-02-19 20:29:04,763 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:05,007 WARN L202 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-19 20:29:05,008 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:29:05,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:05,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:05,029 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 50 treesize of output 30 [2021-02-19 20:29:05,032 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:05,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:05,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:05,055 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 44 treesize of output 26 [2021-02-19 20:29:05,059 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:05,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:05,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:05,080 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 46 treesize of output 26 [2021-02-19 20:29:05,084 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:05,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:05,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:05,095 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 52 treesize of output 30 [2021-02-19 20:29:05,100 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:05,307 WARN L202 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-02-19 20:29:05,308 INFO L628 ElimStorePlain]: treesize reduction 28, result has 78.9 percent of original size [2021-02-19 20:29:05,308 INFO L518 ElimStorePlain]: Eliminatee v_prenex_224 vanished before elimination [2021-02-19 20:29:05,308 INFO L518 ElimStorePlain]: Eliminatee v_prenex_225 vanished before elimination [2021-02-19 20:29:05,311 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-02-19 20:29:05,311 INFO L247 ElimStorePlain]: Needed 25 recursive calls to eliminate 8 variables, input treesize:2593, output treesize:105 [2021-02-19 20:29:05,497 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2021-02-19 20:29:05,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-02-19 20:29:05,608 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:05,651 INFO L628 ElimStorePlain]: treesize reduction 108, result has 4.4 percent of original size [2021-02-19 20:29:05,651 INFO L518 ElimStorePlain]: Eliminatee C vanished before elimination [2021-02-19 20:29:05,651 INFO L518 ElimStorePlain]: Eliminatee v_prenex_226 vanished before elimination [2021-02-19 20:29:05,651 INFO L518 ElimStorePlain]: Eliminatee v_prenex_227 vanished before elimination [2021-02-19 20:29:05,653 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 20:29:05,653 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:128, output treesize:5 [2021-02-19 20:29:05,683 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:29:05,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:29:05,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2021-02-19 20:29:05,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736778184] [2021-02-19 20:29:05,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-19 20:29:05,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:29:05,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-19 20:29:05,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-02-19 20:29:05,684 INFO L87 Difference]: Start difference. First operand 6135 states and 21934 transitions. Second operand has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:29:06,245 WARN L202 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2021-02-19 20:29:06,662 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2021-02-19 20:29:07,756 WARN L202 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2021-02-19 20:29:08,455 WARN L202 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2021-02-19 20:29:09,338 WARN L202 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2021-02-19 20:29:10,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:29:10,588 INFO L93 Difference]: Finished difference Result 9093 states and 31725 transitions. [2021-02-19 20:29:10,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-19 20:29:10,590 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 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 33 [2021-02-19 20:29:10,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:29:10,606 INFO L225 Difference]: With dead ends: 9093 [2021-02-19 20:29:10,607 INFO L226 Difference]: Without dead ends: 8883 [2021-02-19 20:29:10,607 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2021-02-19 20:29:10,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8883 states. [2021-02-19 20:29:10,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8883 to 6225. [2021-02-19 20:29:10,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6225 states, 6224 states have (on average 3.570694087403599) internal successors, (22224), 6224 states have internal predecessors, (22224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:29:10,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6225 states to 6225 states and 22224 transitions. [2021-02-19 20:29:10,719 INFO L78 Accepts]: Start accepts. Automaton has 6225 states and 22224 transitions. Word has length 33 [2021-02-19 20:29:10,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:29:10,719 INFO L480 AbstractCegarLoop]: Abstraction has 6225 states and 22224 transitions. [2021-02-19 20:29:10,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:29:10,719 INFO L276 IsEmpty]: Start isEmpty. Operand 6225 states and 22224 transitions. [2021-02-19 20:29:10,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-19 20:29:10,729 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:29:10,730 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:29:10,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable436 [2021-02-19 20:29:10,934 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:29:10,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:29:10,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1989892815, now seen corresponding path program 20 times [2021-02-19 20:29:10,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:29:10,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140682949] [2021-02-19 20:29:10,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:29:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:29:11,563 WARN L202 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 39 [2021-02-19 20:29:11,841 WARN L202 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 45 [2021-02-19 20:29:12,165 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2021-02-19 20:29:12,539 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 48 [2021-02-19 20:29:12,838 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 19 [2021-02-19 20:29:12,916 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:29:12,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140682949] [2021-02-19 20:29:12,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649369287] [2021-02-19 20:29:12,916 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 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 [2021-02-19 20:29:12,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 20:29:12,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 20:29:12,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 27 conjunts are in the unsatisfiable core [2021-02-19 20:29:12,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:29:13,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:29:13,421 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:13,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:29:13,431 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:13,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:29:13,440 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:13,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:29:13,451 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:13,587 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-02-19 20:29:13,588 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:29:13,590 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-02-19 20:29:13,590 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:277, output treesize:273 [2021-02-19 20:29:13,757 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-02-19 20:29:13,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:13,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:29:13,783 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:13,959 WARN L202 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-02-19 20:29:13,960 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:29:13,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:13,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:29:13,983 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:14,239 WARN L202 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-02-19 20:29:14,240 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:29:14,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:14,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:29:14,262 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:14,514 WARN L202 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-19 20:29:14,515 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:29:14,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:14,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:29:14,537 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:14,828 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-02-19 20:29:14,829 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:29:14,832 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-02-19 20:29:14,832 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:309, output treesize:305 [2021-02-19 20:29:15,187 WARN L202 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-02-19 20:29:15,936 WARN L202 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2021-02-19 20:29:16,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:16,033 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 29 [2021-02-19 20:29:16,038 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:16,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:16,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2021-02-19 20:29:16,061 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:16,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:16,074 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 40 treesize of output 32 [2021-02-19 20:29:16,079 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:17,081 WARN L202 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-02-19 20:29:17,082 INFO L628 ElimStorePlain]: treesize reduction 234, result has 72.4 percent of original size [2021-02-19 20:29:17,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:17,095 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 34 treesize of output 26 [2021-02-19 20:29:17,099 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:17,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:17,116 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 26 [2021-02-19 20:29:17,122 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:17,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:17,133 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 29 treesize of output 23 [2021-02-19 20:29:17,139 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:17,578 WARN L202 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-19 20:29:17,579 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:29:17,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:17,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2021-02-19 20:29:17,598 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:17,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:17,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2021-02-19 20:29:17,615 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:18,026 WARN L202 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-02-19 20:29:18,027 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:29:18,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:18,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2021-02-19 20:29:18,048 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:18,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:18,059 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 26 [2021-02-19 20:29:18,066 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:18,437 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-02-19 20:29:18,438 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:29:18,442 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-02-19 20:29:18,442 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 4 variables, input treesize:909, output treesize:443 [2021-02-19 20:29:18,912 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-02-19 20:29:20,821 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 17 [2021-02-19 20:29:20,826 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:20,865 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 27 treesize of output 17 [2021-02-19 20:29:20,872 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:20,910 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 17 [2021-02-19 20:29:20,915 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:20,938 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 27 treesize of output 17 [2021-02-19 20:29:20,944 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:23,383 WARN L202 SmtUtils]: Spent 2.44 s on a formula simplification that was a NOOP. DAG size: 236 [2021-02-19 20:29:23,384 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:29:23,415 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 27 treesize of output 17 [2021-02-19 20:29:23,420 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:23,452 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 17 [2021-02-19 20:29:23,456 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:23,488 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 17 [2021-02-19 20:29:23,491 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:23,513 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 27 treesize of output 17 [2021-02-19 20:29:23,518 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:25,421 WARN L202 SmtUtils]: Spent 1.90 s on a formula simplification that was a NOOP. DAG size: 225 [2021-02-19 20:29:25,422 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:29:25,452 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 17 [2021-02-19 20:29:25,456 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:25,490 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 17 [2021-02-19 20:29:25,495 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:25,527 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 27 treesize of output 17 [2021-02-19 20:29:25,532 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:25,550 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 27 treesize of output 17 [2021-02-19 20:29:25,555 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:27,594 WARN L202 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 214 [2021-02-19 20:29:27,595 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:29:27,622 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 27 treesize of output 15 [2021-02-19 20:29:27,626 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:27,646 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 15 [2021-02-19 20:29:27,652 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:28,400 WARN L202 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 5 [2021-02-19 20:29:28,402 INFO L628 ElimStorePlain]: treesize reduction 1393, result has 0.4 percent of original size [2021-02-19 20:29:28,402 INFO L518 ElimStorePlain]: Eliminatee v_prenex_241 vanished before elimination [2021-02-19 20:29:28,402 INFO L518 ElimStorePlain]: Eliminatee v_prenex_242 vanished before elimination [2021-02-19 20:29:28,402 INFO L518 ElimStorePlain]: Eliminatee v_prenex_243 vanished before elimination [2021-02-19 20:29:28,402 INFO L518 ElimStorePlain]: Eliminatee v_prenex_244 vanished before elimination [2021-02-19 20:29:28,402 INFO L518 ElimStorePlain]: Eliminatee v_prenex_245 vanished before elimination [2021-02-19 20:29:28,402 INFO L518 ElimStorePlain]: Eliminatee v_prenex_235 vanished before elimination [2021-02-19 20:29:28,402 INFO L518 ElimStorePlain]: Eliminatee v_prenex_246 vanished before elimination [2021-02-19 20:29:28,402 INFO L518 ElimStorePlain]: Eliminatee v_prenex_236 vanished before elimination [2021-02-19 20:29:28,402 INFO L518 ElimStorePlain]: Eliminatee v_prenex_247 vanished before elimination [2021-02-19 20:29:28,402 INFO L518 ElimStorePlain]: Eliminatee v_prenex_248 vanished before elimination [2021-02-19 20:29:28,402 INFO L518 ElimStorePlain]: Eliminatee v_prenex_237 vanished before elimination [2021-02-19 20:29:28,402 INFO L518 ElimStorePlain]: Eliminatee v_prenex_249 vanished before elimination [2021-02-19 20:29:28,402 INFO L518 ElimStorePlain]: Eliminatee v_prenex_238 vanished before elimination [2021-02-19 20:29:28,402 INFO L518 ElimStorePlain]: Eliminatee v_prenex_239 vanished before elimination [2021-02-19 20:29:28,402 INFO L518 ElimStorePlain]: Eliminatee A vanished before elimination [2021-02-19 20:29:28,402 INFO L518 ElimStorePlain]: Eliminatee B vanished before elimination [2021-02-19 20:29:28,404 INFO L550 ElimStorePlain]: Start of recursive call 1: 20 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 20:29:28,404 INFO L247 ElimStorePlain]: Needed 15 recursive calls to eliminate 20 variables, input treesize:1841, output treesize:5 [2021-02-19 20:29:28,465 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:29:28,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:29:28,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2021-02-19 20:29:28,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670461171] [2021-02-19 20:29:28,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-19 20:29:28,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:29:28,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-19 20:29:28,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2021-02-19 20:29:28,470 INFO L87 Difference]: Start difference. First operand 6225 states and 22224 transitions. Second operand has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:29:28,918 WARN L202 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2021-02-19 20:29:29,326 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2021-02-19 20:29:30,388 WARN L202 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2021-02-19 20:29:31,386 WARN L202 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2021-02-19 20:29:32,537 WARN L202 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2021-02-19 20:29:33,309 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-02-19 20:29:34,282 WARN L202 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-02-19 20:29:35,104 WARN L202 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-02-19 20:29:35,685 WARN L202 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-02-19 20:29:35,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:29:35,831 INFO L93 Difference]: Finished difference Result 8764 states and 30577 transitions. [2021-02-19 20:29:35,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-19 20:29:35,833 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 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 33 [2021-02-19 20:29:35,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:29:35,851 INFO L225 Difference]: With dead ends: 8764 [2021-02-19 20:29:35,851 INFO L226 Difference]: Without dead ends: 8632 [2021-02-19 20:29:35,851 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=217, Invalid=839, Unknown=0, NotChecked=0, Total=1056 [2021-02-19 20:29:35,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8632 states. [2021-02-19 20:29:35,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8632 to 6218. [2021-02-19 20:29:35,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6218 states, 6217 states have (on average 3.5710149589834326) internal successors, (22201), 6217 states have internal predecessors, (22201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:29:36,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 22201 transitions. [2021-02-19 20:29:36,012 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 22201 transitions. Word has length 33 [2021-02-19 20:29:36,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:29:36,012 INFO L480 AbstractCegarLoop]: Abstraction has 6218 states and 22201 transitions. [2021-02-19 20:29:36,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:29:36,012 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 22201 transitions. [2021-02-19 20:29:36,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-19 20:29:36,021 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:29:36,021 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:29:36,226 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable585 [2021-02-19 20:29:36,226 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:29:36,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:29:36,226 INFO L82 PathProgramCache]: Analyzing trace with hash -346836115, now seen corresponding path program 21 times [2021-02-19 20:29:36,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:29:36,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255661859] [2021-02-19 20:29:36,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:29:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:29:37,480 WARN L202 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 44 [2021-02-19 20:29:37,912 WARN L202 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 46 [2021-02-19 20:29:38,388 WARN L202 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 53 [2021-02-19 20:29:38,872 WARN L202 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 50 [2021-02-19 20:29:39,205 WARN L202 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 24 [2021-02-19 20:29:39,390 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 21 [2021-02-19 20:29:39,662 WARN L202 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 19 [2021-02-19 20:29:39,906 WARN L202 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 13 [2021-02-19 20:29:39,964 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:29:39,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255661859] [2021-02-19 20:29:39,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280442138] [2021-02-19 20:29:39,964 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 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 [2021-02-19 20:29:39,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-02-19 20:29:39,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 20:29:39,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 34 conjunts are in the unsatisfiable core [2021-02-19 20:29:39,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:29:40,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:29:40,707 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:40,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:29:40,729 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:40,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:29:40,751 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:40,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:29:40,772 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:41,088 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-02-19 20:29:41,090 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:29:41,093 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-02-19 20:29:41,093 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:289, output treesize:285 [2021-02-19 20:29:41,486 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-02-19 20:29:41,959 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-02-19 20:29:42,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:42,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 41 [2021-02-19 20:29:42,020 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:42,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:42,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 44 [2021-02-19 20:29:42,042 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:43,122 WARN L202 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-02-19 20:29:43,123 INFO L628 ElimStorePlain]: treesize reduction 237, result has 67.4 percent of original size [2021-02-19 20:29:43,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:43,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 44 [2021-02-19 20:29:43,154 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:43,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:43,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 41 [2021-02-19 20:29:43,179 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:43,660 WARN L202 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-02-19 20:29:43,661 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:29:43,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:43,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 41 [2021-02-19 20:29:43,696 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:43,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:43,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 44 [2021-02-19 20:29:43,725 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:44,205 WARN L202 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-02-19 20:29:44,206 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:29:44,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:44,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2021-02-19 20:29:44,231 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:44,697 WARN L202 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-02-19 20:29:44,699 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:29:44,702 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-02-19 20:29:44,702 INFO L247 ElimStorePlain]: Needed 8 recursive calls to eliminate 4 variables, input treesize:737, output treesize:489 [2021-02-19 20:29:45,276 WARN L202 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-02-19 20:29:45,867 WARN L202 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-02-19 20:29:46,518 WARN L202 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-19 20:29:46,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:46,999 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:29:47,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 50 [2021-02-19 20:29:47,019 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-02-19 20:29:47,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:47,102 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-02-19 20:29:47,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 49 [2021-02-19 20:29:47,114 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:49,426 WARN L202 SmtUtils]: Spent 2.31 s on a formula simplification. DAG size of input: 119 DAG size of output: 100 [2021-02-19 20:29:49,428 INFO L628 ElimStorePlain]: treesize reduction 198, result has 83.8 percent of original size [2021-02-19 20:29:49,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:49,448 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 29 treesize of output 23 [2021-02-19 20:29:49,455 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:49,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:49,536 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-02-19 20:29:49,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 40 [2021-02-19 20:29:49,547 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:50,611 WARN L202 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 93 [2021-02-19 20:29:50,612 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:29:50,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:50,689 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:29:50,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 53 [2021-02-19 20:29:50,703 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:50,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:50,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 35 [2021-02-19 20:29:50,724 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:52,965 WARN L202 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2021-02-19 20:29:52,966 INFO L628 ElimStorePlain]: treesize reduction 34, result has 96.6 percent of original size [2021-02-19 20:29:52,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:53,040 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:29:53,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 53 [2021-02-19 20:29:53,054 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:53,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:53,069 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 42 treesize of output 32 [2021-02-19 20:29:53,075 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:55,137 WARN L202 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2021-02-19 20:29:55,138 INFO L628 ElimStorePlain]: treesize reduction 40, result has 95.9 percent of original size [2021-02-19 20:29:55,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:55,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2021-02-19 20:29:55,163 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:55,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:55,248 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-02-19 20:29:55,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 40 [2021-02-19 20:29:55,261 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:56,310 WARN L202 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 73 [2021-02-19 20:29:56,311 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:29:56,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:56,331 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 49 treesize of output 35 [2021-02-19 20:29:56,337 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:56,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:29:56,417 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-02-19 20:29:56,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 49 [2021-02-19 20:29:56,428 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-02-19 20:29:57,333 WARN L202 SmtUtils]: Spent 904.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-02-19 20:29:57,334 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:29:57,350 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 6 dim-1 vars, End of recursive call: and 12 xjuncts. [2021-02-19 20:29:57,350 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 7 variables, input treesize:1197, output treesize:1029 [2021-02-19 20:29:58,984 WARN L202 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2021-02-19 20:29:59,686 WARN L202 SmtUtils]: Spent 532.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-02-19 20:30:01,508 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 17 [2021-02-19 20:30:01,512 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:01,548 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 17 [2021-02-19 20:30:01,552 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:01,588 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 17 [2021-02-19 20:30:01,592 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:01,617 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 17 [2021-02-19 20:30:01,620 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:05,234 WARN L202 SmtUtils]: Spent 3.61 s on a formula simplification that was a NOOP. DAG size: 296 [2021-02-19 20:30:05,235 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:30:05,272 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 17 [2021-02-19 20:30:05,277 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:05,318 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 17 [2021-02-19 20:30:05,322 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:05,361 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 17 [2021-02-19 20:30:05,366 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:05,389 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 17 [2021-02-19 20:30:05,394 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:12,355 WARN L202 SmtUtils]: Spent 6.96 s on a formula simplification. DAG size of input: 288 DAG size of output: 285 [2021-02-19 20:30:12,357 INFO L628 ElimStorePlain]: treesize reduction 54, result has 97.7 percent of original size [2021-02-19 20:30:12,395 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 17 [2021-02-19 20:30:12,400 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:12,438 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 17 [2021-02-19 20:30:12,443 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:12,484 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 17 [2021-02-19 20:30:12,489 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:12,510 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 17 [2021-02-19 20:30:12,516 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:19,034 WARN L202 SmtUtils]: Spent 6.52 s on a formula simplification. DAG size of input: 277 DAG size of output: 274 [2021-02-19 20:30:19,035 INFO L628 ElimStorePlain]: treesize reduction 54, result has 97.5 percent of original size [2021-02-19 20:30:19,074 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 44 treesize of output 28 [2021-02-19 20:30:19,079 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:19,113 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 44 treesize of output 28 [2021-02-19 20:30:19,118 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:19,151 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 44 treesize of output 28 [2021-02-19 20:30:19,157 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:19,175 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 44 treesize of output 28 [2021-02-19 20:30:19,180 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:22,210 WARN L202 SmtUtils]: Spent 3.03 s on a formula simplification that was a NOOP. DAG size: 262 [2021-02-19 20:30:22,212 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:30:22,250 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 27 treesize of output 15 [2021-02-19 20:30:22,255 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:22,282 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 27 treesize of output 15 [2021-02-19 20:30:22,287 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:23,416 WARN L202 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 252 DAG size of output: 5 [2021-02-19 20:30:23,417 INFO L628 ElimStorePlain]: treesize reduction 1928, result has 0.3 percent of original size [2021-02-19 20:30:23,418 INFO L518 ElimStorePlain]: Eliminatee v_prenex_261 vanished before elimination [2021-02-19 20:30:23,418 INFO L518 ElimStorePlain]: Eliminatee v_prenex_272 vanished before elimination [2021-02-19 20:30:23,418 INFO L518 ElimStorePlain]: Eliminatee v_prenex_273 vanished before elimination [2021-02-19 20:30:23,418 INFO L518 ElimStorePlain]: Eliminatee v_prenex_262 vanished before elimination [2021-02-19 20:30:23,418 INFO L518 ElimStorePlain]: Eliminatee v_prenex_274 vanished before elimination [2021-02-19 20:30:23,418 INFO L518 ElimStorePlain]: Eliminatee v_prenex_263 vanished before elimination [2021-02-19 20:30:23,418 INFO L518 ElimStorePlain]: Eliminatee v_prenex_275 vanished before elimination [2021-02-19 20:30:23,418 INFO L518 ElimStorePlain]: Eliminatee v_prenex_264 vanished before elimination [2021-02-19 20:30:23,418 INFO L518 ElimStorePlain]: Eliminatee v_prenex_265 vanished before elimination [2021-02-19 20:30:23,418 INFO L518 ElimStorePlain]: Eliminatee v_prenex_276 vanished before elimination [2021-02-19 20:30:23,418 INFO L518 ElimStorePlain]: Eliminatee v_prenex_277 vanished before elimination [2021-02-19 20:30:23,418 INFO L518 ElimStorePlain]: Eliminatee v_prenex_266 vanished before elimination [2021-02-19 20:30:23,418 INFO L518 ElimStorePlain]: Eliminatee v_prenex_278 vanished before elimination [2021-02-19 20:30:23,418 INFO L518 ElimStorePlain]: Eliminatee v_prenex_267 vanished before elimination [2021-02-19 20:30:23,419 INFO L518 ElimStorePlain]: Eliminatee v_prenex_268 vanished before elimination [2021-02-19 20:30:23,419 INFO L518 ElimStorePlain]: Eliminatee v_prenex_279 vanished before elimination [2021-02-19 20:30:23,419 INFO L518 ElimStorePlain]: Eliminatee v_prenex_269 vanished before elimination [2021-02-19 20:30:23,419 INFO L518 ElimStorePlain]: Eliminatee A vanished before elimination [2021-02-19 20:30:23,419 INFO L518 ElimStorePlain]: Eliminatee B vanished before elimination [2021-02-19 20:30:23,421 INFO L550 ElimStorePlain]: Start of recursive call 1: 24 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 20:30:23,422 INFO L247 ElimStorePlain]: Needed 19 recursive calls to eliminate 24 variables, input treesize:2561, output treesize:5 [2021-02-19 20:30:23,492 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:30:23,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:30:23,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 27 [2021-02-19 20:30:23,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838804593] [2021-02-19 20:30:23,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-02-19 20:30:23,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:30:23,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-02-19 20:30:23,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=611, Unknown=0, NotChecked=0, Total=756 [2021-02-19 20:30:23,493 INFO L87 Difference]: Start difference. First operand 6218 states and 22201 transitions. Second operand has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:30:25,782 WARN L202 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2021-02-19 20:30:27,732 WARN L202 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2021-02-19 20:30:29,376 WARN L202 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-02-19 20:30:31,151 WARN L202 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2021-02-19 20:30:32,962 WARN L202 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-02-19 20:30:34,145 WARN L202 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2021-02-19 20:30:35,890 WARN L202 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2021-02-19 20:30:37,647 WARN L202 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2021-02-19 20:30:39,025 WARN L202 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-02-19 20:30:41,276 WARN L202 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2021-02-19 20:30:41,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:30:41,409 INFO L93 Difference]: Finished difference Result 7875 states and 27587 transitions. [2021-02-19 20:30:41,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-19 20:30:41,413 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 states have internal predecessors, (58), 0 states have call successors, (0), 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 33 [2021-02-19 20:30:41,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:30:41,433 INFO L225 Difference]: With dead ends: 7875 [2021-02-19 20:30:41,434 INFO L226 Difference]: Without dead ends: 7744 [2021-02-19 20:30:41,434 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=278, Invalid=1204, Unknown=0, NotChecked=0, Total=1482 [2021-02-19 20:30:41,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7744 states. [2021-02-19 20:30:41,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7744 to 6202. [2021-02-19 20:30:41,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6202 states, 6201 states have (on average 3.5734558942106114) internal successors, (22159), 6201 states have internal predecessors, (22159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:30:41,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6202 states to 6202 states and 22159 transitions. [2021-02-19 20:30:41,591 INFO L78 Accepts]: Start accepts. Automaton has 6202 states and 22159 transitions. Word has length 33 [2021-02-19 20:30:41,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:30:41,591 INFO L480 AbstractCegarLoop]: Abstraction has 6202 states and 22159 transitions. [2021-02-19 20:30:41,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:30:41,591 INFO L276 IsEmpty]: Start isEmpty. Operand 6202 states and 22159 transitions. [2021-02-19 20:30:41,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-19 20:30:41,601 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:30:41,601 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:30:41,801 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable713 [2021-02-19 20:30:41,802 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:30:41,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:30:41,802 INFO L82 PathProgramCache]: Analyzing trace with hash -874818997, now seen corresponding path program 22 times [2021-02-19 20:30:41,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:30:41,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267344548] [2021-02-19 20:30:41,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:30:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:30:42,172 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 19 [2021-02-19 20:30:42,302 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 22 [2021-02-19 20:30:42,457 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-02-19 20:30:43,587 WARN L202 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 87 DAG size of output: 49 [2021-02-19 20:30:44,608 WARN L202 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2021-02-19 20:30:45,001 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 28 [2021-02-19 20:30:45,210 WARN L202 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 22 [2021-02-19 20:30:45,465 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:30:45,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267344548] [2021-02-19 20:30:45,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912193516] [2021-02-19 20:30:45,466 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 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 [2021-02-19 20:30:45,492 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 20:30:45,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 20:30:45,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 29 conjunts are in the unsatisfiable core [2021-02-19 20:30:45,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:30:45,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:30:45,974 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:46,027 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:30:46,030 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 20:30:46,031 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:49, output treesize:48 [2021-02-19 20:30:46,380 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-02-19 20:30:46,920 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-02-19 20:30:48,738 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 50 treesize of output 36 [2021-02-19 20:30:48,751 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:48,780 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 52 treesize of output 36 [2021-02-19 20:30:48,792 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:48,821 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 50 treesize of output 36 [2021-02-19 20:30:48,832 INFO L550 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:48,863 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 50 treesize of output 36 [2021-02-19 20:30:48,873 INFO L550 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:48,903 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 52 treesize of output 36 [2021-02-19 20:30:48,915 INFO L550 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:48,948 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 52 treesize of output 36 [2021-02-19 20:30:48,973 INFO L550 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:49,000 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 52 treesize of output 36 [2021-02-19 20:30:49,010 INFO L550 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:49,041 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 50 treesize of output 36 [2021-02-19 20:30:49,051 INFO L550 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:49,078 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 50 treesize of output 36 [2021-02-19 20:30:49,088 INFO L550 ElimStorePlain]: Start of recursive call 10: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:49,121 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 50 treesize of output 36 [2021-02-19 20:30:49,131 INFO L550 ElimStorePlain]: Start of recursive call 11: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:49,166 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 52 treesize of output 36 [2021-02-19 20:30:49,175 INFO L550 ElimStorePlain]: Start of recursive call 12: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:49,207 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 52 treesize of output 36 [2021-02-19 20:30:49,216 INFO L550 ElimStorePlain]: Start of recursive call 13: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:49,247 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 52 treesize of output 36 [2021-02-19 20:30:49,259 INFO L550 ElimStorePlain]: Start of recursive call 14: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:49,300 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 50 treesize of output 36 [2021-02-19 20:30:49,310 INFO L550 ElimStorePlain]: Start of recursive call 15: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:49,349 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 52 treesize of output 36 [2021-02-19 20:30:49,360 INFO L550 ElimStorePlain]: Start of recursive call 16: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:49,379 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 50 treesize of output 36 [2021-02-19 20:30:49,390 INFO L550 ElimStorePlain]: Start of recursive call 17: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:50,978 WARN L202 SmtUtils]: Spent 1.59 s on a formula simplification that was a NOOP. DAG size: 144 [2021-02-19 20:30:50,980 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:30:51,023 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 52 treesize of output 34 [2021-02-19 20:30:51,035 INFO L550 ElimStorePlain]: Start of recursive call 18: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:51,074 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 50 treesize of output 32 [2021-02-19 20:30:51,087 INFO L550 ElimStorePlain]: Start of recursive call 19: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:51,129 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 50 treesize of output 32 [2021-02-19 20:30:51,141 INFO L550 ElimStorePlain]: Start of recursive call 20: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:51,183 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 52 treesize of output 34 [2021-02-19 20:30:51,195 INFO L550 ElimStorePlain]: Start of recursive call 21: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:51,237 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 48 treesize of output 32 [2021-02-19 20:30:51,249 INFO L550 ElimStorePlain]: Start of recursive call 22: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:51,296 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 48 treesize of output 32 [2021-02-19 20:30:51,308 INFO L550 ElimStorePlain]: Start of recursive call 23: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:51,349 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 48 treesize of output 32 [2021-02-19 20:30:51,361 INFO L550 ElimStorePlain]: Start of recursive call 24: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:51,398 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 52 treesize of output 34 [2021-02-19 20:30:51,410 INFO L550 ElimStorePlain]: Start of recursive call 25: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:51,455 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 50 treesize of output 32 [2021-02-19 20:30:51,467 INFO L550 ElimStorePlain]: Start of recursive call 26: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:51,506 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 48 treesize of output 32 [2021-02-19 20:30:51,518 INFO L550 ElimStorePlain]: Start of recursive call 27: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:51,559 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 50 treesize of output 34 [2021-02-19 20:30:51,569 INFO L550 ElimStorePlain]: Start of recursive call 28: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:51,609 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 50 treesize of output 34 [2021-02-19 20:30:51,621 INFO L550 ElimStorePlain]: Start of recursive call 29: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:51,660 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 50 treesize of output 32 [2021-02-19 20:30:51,671 INFO L550 ElimStorePlain]: Start of recursive call 30: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:51,707 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 52 treesize of output 34 [2021-02-19 20:30:51,718 INFO L550 ElimStorePlain]: Start of recursive call 31: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:51,768 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 50 treesize of output 34 [2021-02-19 20:30:51,779 INFO L550 ElimStorePlain]: Start of recursive call 32: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:51,801 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 50 treesize of output 34 [2021-02-19 20:30:51,812 INFO L550 ElimStorePlain]: Start of recursive call 33: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:30:54,960 WARN L202 SmtUtils]: Spent 3.15 s on a formula simplification. DAG size of input: 174 DAG size of output: 172 [2021-02-19 20:30:54,962 INFO L628 ElimStorePlain]: treesize reduction 10, result has 98.0 percent of original size [2021-02-19 20:30:55,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-02-19 20:30:55,007 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:55,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-02-19 20:30:55,055 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:55,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-02-19 20:30:55,102 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:55,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:30:55,147 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:55,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-02-19 20:30:55,190 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:55,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:30:55,232 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:55,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-02-19 20:30:55,275 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:55,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:30:55,318 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:55,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-02-19 20:30:55,364 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:55,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-02-19 20:30:55,409 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:55,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:30:55,450 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:55,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-02-19 20:30:55,493 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:55,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-02-19 20:30:55,538 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:55,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-02-19 20:30:55,583 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:55,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-02-19 20:30:55,627 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:55,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-02-19 20:30:55,668 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:56,491 WARN L202 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-02-19 20:30:56,492 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:30:56,500 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-02-19 20:30:56,501 INFO L247 ElimStorePlain]: Needed 49 recursive calls to eliminate 3 variables, input treesize:1153, output treesize:211 [2021-02-19 20:30:57,007 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2021-02-19 20:30:57,589 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2021-02-19 20:30:57,670 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 17 [2021-02-19 20:30:57,673 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:57,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2021-02-19 20:30:57,685 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:30:57,720 INFO L628 ElimStorePlain]: treesize reduction 86, result has 5.5 percent of original size [2021-02-19 20:30:57,720 INFO L518 ElimStorePlain]: Eliminatee v_prenex_283 vanished before elimination [2021-02-19 20:30:57,720 INFO L518 ElimStorePlain]: Eliminatee v_prenex_284 vanished before elimination [2021-02-19 20:30:57,720 INFO L518 ElimStorePlain]: Eliminatee v_prenex_285 vanished before elimination [2021-02-19 20:30:57,721 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 20:30:57,722 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:128, output treesize:5 [2021-02-19 20:30:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:30:57,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:30:57,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2021-02-19 20:30:57,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675116999] [2021-02-19 20:30:57,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-19 20:30:57,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:30:57,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-19 20:30:57,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2021-02-19 20:30:57,748 INFO L87 Difference]: Start difference. First operand 6202 states and 22159 transitions. Second operand has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:30:58,027 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-02-19 20:30:58,584 WARN L202 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2021-02-19 20:30:59,448 WARN L202 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2021-02-19 20:31:00,538 WARN L202 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-02-19 20:31:01,987 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2021-02-19 20:31:03,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:31:03,263 INFO L93 Difference]: Finished difference Result 8633 states and 30105 transitions. [2021-02-19 20:31:03,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-19 20:31:03,267 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 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 33 [2021-02-19 20:31:03,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:31:03,288 INFO L225 Difference]: With dead ends: 8633 [2021-02-19 20:31:03,288 INFO L226 Difference]: Without dead ends: 8590 [2021-02-19 20:31:03,288 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2021-02-19 20:31:03,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8590 states. [2021-02-19 20:31:03,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8590 to 6280. [2021-02-19 20:31:03,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6280 states, 6279 states have (on average 3.568561872909699) internal successors, (22407), 6279 states have internal predecessors, (22407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:31:03,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6280 states to 6280 states and 22407 transitions. [2021-02-19 20:31:03,409 INFO L78 Accepts]: Start accepts. Automaton has 6280 states and 22407 transitions. Word has length 33 [2021-02-19 20:31:03,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:31:03,409 INFO L480 AbstractCegarLoop]: Abstraction has 6280 states and 22407 transitions. [2021-02-19 20:31:03,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:31:03,409 INFO L276 IsEmpty]: Start isEmpty. Operand 6280 states and 22407 transitions. [2021-02-19 20:31:03,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-19 20:31:03,419 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:31:03,419 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:31:03,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable856,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 20:31:03,620 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:31:03,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:31:03,621 INFO L82 PathProgramCache]: Analyzing trace with hash 321493445, now seen corresponding path program 23 times [2021-02-19 20:31:03,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:31:03,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854492136] [2021-02-19 20:31:03,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:31:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:31:03,958 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 21 [2021-02-19 20:31:04,086 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-02-19 20:31:04,747 WARN L202 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 44 [2021-02-19 20:31:04,929 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 23 [2021-02-19 20:31:05,185 WARN L202 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2021-02-19 20:31:05,436 WARN L202 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 27 [2021-02-19 20:31:05,607 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 20 [2021-02-19 20:31:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:31:05,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854492136] [2021-02-19 20:31:05,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999357572] [2021-02-19 20:31:05,846 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 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 [2021-02-19 20:31:05,879 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-02-19 20:31:05,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 20:31:05,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 29 conjunts are in the unsatisfiable core [2021-02-19 20:31:05,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:31:06,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-02-19 20:31:06,382 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:06,440 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:31:06,443 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 20:31:06,443 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:46, output treesize:45 [2021-02-19 20:31:06,801 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-19 20:31:07,309 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-02-19 20:31:08,129 WARN L202 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2021-02-19 20:31:08,917 WARN L202 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-02-19 20:31:13,199 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 43 treesize of output 29 [2021-02-19 20:31:13,211 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:13,239 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 43 treesize of output 29 [2021-02-19 20:31:13,250 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:13,278 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 52 treesize of output 36 [2021-02-19 20:31:13,291 INFO L550 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:13,325 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 43 treesize of output 29 [2021-02-19 20:31:13,337 INFO L550 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:13,366 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 29 [2021-02-19 20:31:13,377 INFO L550 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:13,414 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 29 [2021-02-19 20:31:13,426 INFO L550 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:13,463 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 29 [2021-02-19 20:31:13,475 INFO L550 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:13,516 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 43 treesize of output 29 [2021-02-19 20:31:13,527 INFO L550 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:13,555 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 29 [2021-02-19 20:31:13,562 INFO L550 ElimStorePlain]: Start of recursive call 10: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:13,589 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 52 treesize of output 36 [2021-02-19 20:31:13,601 INFO L550 ElimStorePlain]: Start of recursive call 11: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:13,633 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 50 treesize of output 36 [2021-02-19 20:31:13,644 INFO L550 ElimStorePlain]: Start of recursive call 12: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:13,692 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 43 treesize of output 29 [2021-02-19 20:31:13,703 INFO L550 ElimStorePlain]: Start of recursive call 13: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:13,739 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 50 treesize of output 36 [2021-02-19 20:31:13,750 INFO L550 ElimStorePlain]: Start of recursive call 14: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:13,785 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 52 treesize of output 36 [2021-02-19 20:31:13,796 INFO L550 ElimStorePlain]: Start of recursive call 15: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:13,835 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 50 treesize of output 36 [2021-02-19 20:31:13,846 INFO L550 ElimStorePlain]: Start of recursive call 16: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:13,887 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 29 [2021-02-19 20:31:13,899 INFO L550 ElimStorePlain]: Start of recursive call 17: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:13,938 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 50 treesize of output 36 [2021-02-19 20:31:13,950 INFO L550 ElimStorePlain]: Start of recursive call 18: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:14,021 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 29 [2021-02-19 20:31:14,037 INFO L550 ElimStorePlain]: Start of recursive call 19: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:14,096 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 50 treesize of output 36 [2021-02-19 20:31:14,108 INFO L550 ElimStorePlain]: Start of recursive call 20: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:14,164 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 52 treesize of output 36 [2021-02-19 20:31:14,176 INFO L550 ElimStorePlain]: Start of recursive call 21: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:14,241 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 50 treesize of output 36 [2021-02-19 20:31:14,254 INFO L550 ElimStorePlain]: Start of recursive call 22: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:14,297 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 52 treesize of output 36 [2021-02-19 20:31:14,309 INFO L550 ElimStorePlain]: Start of recursive call 23: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:14,367 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 43 treesize of output 29 [2021-02-19 20:31:14,378 INFO L550 ElimStorePlain]: Start of recursive call 24: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:14,426 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 41 treesize of output 29 [2021-02-19 20:31:14,438 INFO L550 ElimStorePlain]: Start of recursive call 25: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:14,485 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 43 treesize of output 29 [2021-02-19 20:31:14,496 INFO L550 ElimStorePlain]: Start of recursive call 26: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:14,582 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 29 [2021-02-19 20:31:14,594 INFO L550 ElimStorePlain]: Start of recursive call 27: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:14,654 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 52 treesize of output 36 [2021-02-19 20:31:14,665 INFO L550 ElimStorePlain]: Start of recursive call 28: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:14,729 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 52 treesize of output 36 [2021-02-19 20:31:14,741 INFO L550 ElimStorePlain]: Start of recursive call 29: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:14,835 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 50 treesize of output 36 [2021-02-19 20:31:14,846 INFO L550 ElimStorePlain]: Start of recursive call 30: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:14,889 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 50 treesize of output 36 [2021-02-19 20:31:14,900 INFO L550 ElimStorePlain]: Start of recursive call 31: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:14,940 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 43 treesize of output 29 [2021-02-19 20:31:14,951 INFO L550 ElimStorePlain]: Start of recursive call 32: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:14,996 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 52 treesize of output 36 [2021-02-19 20:31:15,008 INFO L550 ElimStorePlain]: Start of recursive call 33: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:22,243 WARN L202 SmtUtils]: Spent 7.23 s on a formula simplification that was a NOOP. DAG size: 265 [2021-02-19 20:31:22,245 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:31:22,312 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 52 treesize of output 34 [2021-02-19 20:31:22,325 INFO L550 ElimStorePlain]: Start of recursive call 34: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:22,403 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 39 treesize of output 25 [2021-02-19 20:31:22,416 INFO L550 ElimStorePlain]: Start of recursive call 35: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:22,523 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 37 treesize of output 25 [2021-02-19 20:31:22,535 INFO L550 ElimStorePlain]: Start of recursive call 36: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:22,641 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 39 treesize of output 25 [2021-02-19 20:31:22,654 INFO L550 ElimStorePlain]: Start of recursive call 37: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:22,721 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 52 treesize of output 34 [2021-02-19 20:31:22,734 INFO L550 ElimStorePlain]: Start of recursive call 38: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:22,813 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 44 treesize of output 30 [2021-02-19 20:31:22,826 INFO L550 ElimStorePlain]: Start of recursive call 39: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:22,914 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 46 treesize of output 30 [2021-02-19 20:31:22,927 INFO L550 ElimStorePlain]: Start of recursive call 40: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:23,003 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 44 treesize of output 30 [2021-02-19 20:31:23,015 INFO L550 ElimStorePlain]: Start of recursive call 41: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:23,095 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 37 treesize of output 25 [2021-02-19 20:31:23,108 INFO L550 ElimStorePlain]: Start of recursive call 42: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:23,205 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 39 treesize of output 25 [2021-02-19 20:31:23,219 INFO L550 ElimStorePlain]: Start of recursive call 43: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:23,294 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 37 treesize of output 25 [2021-02-19 20:31:23,307 INFO L550 ElimStorePlain]: Start of recursive call 44: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:23,391 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 39 treesize of output 25 [2021-02-19 20:31:23,403 INFO L550 ElimStorePlain]: Start of recursive call 45: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:23,476 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 46 treesize of output 30 [2021-02-19 20:31:23,488 INFO L550 ElimStorePlain]: Start of recursive call 46: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:23,550 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 39 treesize of output 25 [2021-02-19 20:31:23,563 INFO L550 ElimStorePlain]: Start of recursive call 47: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:23,644 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 44 treesize of output 30 [2021-02-19 20:31:23,656 INFO L550 ElimStorePlain]: Start of recursive call 48: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:23,722 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 37 treesize of output 25 [2021-02-19 20:31:23,734 INFO L550 ElimStorePlain]: Start of recursive call 49: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:23,807 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 52 treesize of output 34 [2021-02-19 20:31:23,820 INFO L550 ElimStorePlain]: Start of recursive call 50: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:23,885 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 39 treesize of output 25 [2021-02-19 20:31:23,896 INFO L550 ElimStorePlain]: Start of recursive call 51: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:23,958 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 44 treesize of output 30 [2021-02-19 20:31:23,969 INFO L550 ElimStorePlain]: Start of recursive call 52: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:24,033 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 50 treesize of output 34 [2021-02-19 20:31:24,045 INFO L550 ElimStorePlain]: Start of recursive call 53: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:24,113 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 37 treesize of output 25 [2021-02-19 20:31:24,125 INFO L550 ElimStorePlain]: Start of recursive call 54: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:24,186 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 46 treesize of output 30 [2021-02-19 20:31:24,198 INFO L550 ElimStorePlain]: Start of recursive call 55: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:24,262 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 37 treesize of output 25 [2021-02-19 20:31:24,274 INFO L550 ElimStorePlain]: Start of recursive call 56: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:24,334 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 50 treesize of output 34 [2021-02-19 20:31:24,347 INFO L550 ElimStorePlain]: Start of recursive call 57: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:24,403 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 52 treesize of output 34 [2021-02-19 20:31:24,417 INFO L550 ElimStorePlain]: Start of recursive call 58: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:24,480 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 39 treesize of output 25 [2021-02-19 20:31:24,492 INFO L550 ElimStorePlain]: Start of recursive call 59: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:24,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-02-19 20:31:24,566 INFO L550 ElimStorePlain]: Start of recursive call 60: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:24,626 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 50 treesize of output 34 [2021-02-19 20:31:24,638 INFO L550 ElimStorePlain]: Start of recursive call 61: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:24,698 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 46 treesize of output 30 [2021-02-19 20:31:24,710 INFO L550 ElimStorePlain]: Start of recursive call 62: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:24,764 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 50 treesize of output 34 [2021-02-19 20:31:24,776 INFO L550 ElimStorePlain]: Start of recursive call 63: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:24,830 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 39 treesize of output 25 [2021-02-19 20:31:24,842 INFO L550 ElimStorePlain]: Start of recursive call 64: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:24,875 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 37 treesize of output 25 [2021-02-19 20:31:24,887 INFO L550 ElimStorePlain]: Start of recursive call 65: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 20:31:38,932 WARN L202 SmtUtils]: Spent 14.04 s on a formula simplification. DAG size of input: 329 DAG size of output: 327 [2021-02-19 20:31:38,934 INFO L628 ElimStorePlain]: treesize reduction 10, result has 99.0 percent of original size [2021-02-19 20:31:38,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-02-19 20:31:38,998 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:39,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-02-19 20:31:39,075 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:39,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:31:39,141 INFO L550 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:39,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-02-19 20:31:39,211 INFO L550 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:39,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:31:39,276 INFO L550 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:39,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:31:39,339 INFO L550 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:39,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:31:39,403 INFO L550 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:39,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:31:39,465 INFO L550 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:39,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-02-19 20:31:39,532 INFO L550 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:39,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:31:39,597 INFO L550 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:39,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:31:39,663 INFO L550 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:39,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-02-19 20:31:39,737 INFO L550 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:39,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2021-02-19 20:31:39,803 INFO L550 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:39,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2021-02-19 20:31:39,869 INFO L550 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:39,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-02-19 20:31:39,936 INFO L550 ElimStorePlain]: Start of recursive call 80: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:39,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:31:40,004 INFO L550 ElimStorePlain]: Start of recursive call 81: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:40,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:31:40,072 INFO L550 ElimStorePlain]: Start of recursive call 82: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:40,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-02-19 20:31:40,143 INFO L550 ElimStorePlain]: Start of recursive call 83: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:40,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:31:40,212 INFO L550 ElimStorePlain]: Start of recursive call 84: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:40,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:31:40,278 INFO L550 ElimStorePlain]: Start of recursive call 85: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:40,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-02-19 20:31:40,352 INFO L550 ElimStorePlain]: Start of recursive call 86: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:40,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2021-02-19 20:31:40,420 INFO L550 ElimStorePlain]: Start of recursive call 87: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:40,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:31:40,489 INFO L550 ElimStorePlain]: Start of recursive call 88: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:40,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-02-19 20:31:40,559 INFO L550 ElimStorePlain]: Start of recursive call 89: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:40,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-02-19 20:31:40,639 INFO L550 ElimStorePlain]: Start of recursive call 90: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:40,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-02-19 20:31:40,708 INFO L550 ElimStorePlain]: Start of recursive call 91: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:40,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:31:40,777 INFO L550 ElimStorePlain]: Start of recursive call 92: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:40,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2021-02-19 20:31:40,844 INFO L550 ElimStorePlain]: Start of recursive call 93: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:40,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:31:40,912 INFO L550 ElimStorePlain]: Start of recursive call 94: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:40,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:31:40,981 INFO L550 ElimStorePlain]: Start of recursive call 95: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:41,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-02-19 20:31:41,050 INFO L550 ElimStorePlain]: Start of recursive call 96: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:41,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-02-19 20:31:41,114 INFO L550 ElimStorePlain]: Start of recursive call 97: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:43,104 WARN L202 SmtUtils]: Spent 1.99 s on a formula simplification that was a NOOP. DAG size: 295 [2021-02-19 20:31:43,106 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:31:43,126 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 18 xjuncts. [2021-02-19 20:31:43,126 INFO L247 ElimStorePlain]: Needed 97 recursive calls to eliminate 3 variables, input treesize:2241, output treesize:429 [2021-02-19 20:31:43,812 WARN L202 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 25 [2021-02-19 20:31:44,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2021-02-19 20:31:44,014 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:44,027 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 11 [2021-02-19 20:31:44,036 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:44,101 INFO L628 ElimStorePlain]: treesize reduction 93, result has 5.1 percent of original size [2021-02-19 20:31:44,101 INFO L518 ElimStorePlain]: Eliminatee v_prenex_286 vanished before elimination [2021-02-19 20:31:44,101 INFO L518 ElimStorePlain]: Eliminatee v_prenex_287 vanished before elimination [2021-02-19 20:31:44,101 INFO L518 ElimStorePlain]: Eliminatee v_prenex_288 vanished before elimination [2021-02-19 20:31:44,104 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 20:31:44,105 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:128, output treesize:5 [2021-02-19 20:31:44,160 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:31:44,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:31:44,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 24 [2021-02-19 20:31:44,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444366969] [2021-02-19 20:31:44,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-19 20:31:44,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:31:44,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-19 20:31:44,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2021-02-19 20:31:44,162 INFO L87 Difference]: Start difference. First operand 6280 states and 22407 transitions. Second operand has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:31:44,685 WARN L202 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2021-02-19 20:31:45,131 WARN L202 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2021-02-19 20:31:45,971 WARN L202 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2021-02-19 20:31:47,585 WARN L202 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2021-02-19 20:31:48,909 WARN L202 SmtUtils]: Spent 858.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2021-02-19 20:31:51,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:31:51,141 INFO L93 Difference]: Finished difference Result 8577 states and 29914 transitions. [2021-02-19 20:31:51,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-19 20:31:51,145 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 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 33 [2021-02-19 20:31:51,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:31:51,166 INFO L225 Difference]: With dead ends: 8577 [2021-02-19 20:31:51,166 INFO L226 Difference]: Without dead ends: 8400 [2021-02-19 20:31:51,167 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2021-02-19 20:31:51,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8400 states. [2021-02-19 20:31:51,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8400 to 6348. [2021-02-19 20:31:51,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6348 states, 6347 states have (on average 3.561997794233496) internal successors, (22608), 6347 states have internal predecessors, (22608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:31:51,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6348 states to 6348 states and 22608 transitions. [2021-02-19 20:31:51,294 INFO L78 Accepts]: Start accepts. Automaton has 6348 states and 22608 transitions. Word has length 33 [2021-02-19 20:31:51,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:31:51,294 INFO L480 AbstractCegarLoop]: Abstraction has 6348 states and 22608 transitions. [2021-02-19 20:31:51,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:31:51,294 INFO L276 IsEmpty]: Start isEmpty. Operand 6348 states and 22608 transitions. [2021-02-19 20:31:51,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-19 20:31:51,305 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:31:51,305 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:31:51,505 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable917,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 20:31:51,506 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:31:51,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:31:51,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1275794571, now seen corresponding path program 24 times [2021-02-19 20:31:51,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:31:51,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706696649] [2021-02-19 20:31:51,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:31:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:31:51,612 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-19 20:31:51,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706696649] [2021-02-19 20:31:51,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146946937] [2021-02-19 20:31:51,612 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 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 [2021-02-19 20:31:51,637 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-02-19 20:31:51,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 20:31:51,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2021-02-19 20:31:51,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:31:52,073 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-19 20:31:52,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:31:52,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-02-19 20:31:52,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779511678] [2021-02-19 20:31:52,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 20:31:52,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:31:52,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 20:31:52,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-02-19 20:31:52,074 INFO L87 Difference]: Start difference. First operand 6348 states and 22608 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:31:52,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:31:52,565 INFO L93 Difference]: Finished difference Result 9208 states and 32067 transitions. [2021-02-19 20:31:52,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 20:31:52,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 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 33 [2021-02-19 20:31:52,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:31:52,591 INFO L225 Difference]: With dead ends: 9208 [2021-02-19 20:31:52,591 INFO L226 Difference]: Without dead ends: 9114 [2021-02-19 20:31:52,591 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-02-19 20:31:52,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9114 states. [2021-02-19 20:31:52,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9114 to 6624. [2021-02-19 20:31:52,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6624 states, 6623 states have (on average 3.5461271327193113) internal successors, (23486), 6623 states have internal predecessors, (23486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:31:52,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6624 states to 6624 states and 23486 transitions. [2021-02-19 20:31:52,800 INFO L78 Accepts]: Start accepts. Automaton has 6624 states and 23486 transitions. Word has length 33 [2021-02-19 20:31:52,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:31:52,800 INFO L480 AbstractCegarLoop]: Abstraction has 6624 states and 23486 transitions. [2021-02-19 20:31:52,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:31:52,801 INFO L276 IsEmpty]: Start isEmpty. Operand 6624 states and 23486 transitions. [2021-02-19 20:31:52,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-19 20:31:52,813 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:31:52,813 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:31:53,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1111 [2021-02-19 20:31:53,013 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:31:53,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:31:53,014 INFO L82 PathProgramCache]: Analyzing trace with hash 354072345, now seen corresponding path program 25 times [2021-02-19 20:31:53,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:31:53,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323280907] [2021-02-19 20:31:53,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:31:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:31:53,083 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-02-19 20:31:53,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323280907] [2021-02-19 20:31:53,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643776350] [2021-02-19 20:31:53,084 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 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 [2021-02-19 20:31:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:31:53,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2021-02-19 20:31:53,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:31:53,470 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-02-19 20:31:53,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:31:53,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-02-19 20:31:53,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652888507] [2021-02-19 20:31:53,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-19 20:31:53,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:31:53,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-19 20:31:53,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-19 20:31:53,471 INFO L87 Difference]: Start difference. First operand 6624 states and 23486 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) [2021-02-19 20:31:53,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:31:53,621 INFO L93 Difference]: Finished difference Result 6820 states and 24081 transitions. [2021-02-19 20:31:53,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-19 20:31:53,625 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 33 [2021-02-19 20:31:53,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:31:53,640 INFO L225 Difference]: With dead ends: 6820 [2021-02-19 20:31:53,640 INFO L226 Difference]: Without dead ends: 6814 [2021-02-19 20:31:53,640 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-02-19 20:31:53,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6814 states. [2021-02-19 20:31:53,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6814 to 6552. [2021-02-19 20:31:53,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6552 states, 6551 states have (on average 3.551060906731797) internal successors, (23263), 6551 states have internal predecessors, (23263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:31:53,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6552 states to 6552 states and 23263 transitions. [2021-02-19 20:31:53,757 INFO L78 Accepts]: Start accepts. Automaton has 6552 states and 23263 transitions. Word has length 33 [2021-02-19 20:31:53,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:31:53,757 INFO L480 AbstractCegarLoop]: Abstraction has 6552 states and 23263 transitions. [2021-02-19 20:31:53,757 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) [2021-02-19 20:31:53,757 INFO L276 IsEmpty]: Start isEmpty. Operand 6552 states and 23263 transitions. [2021-02-19 20:31:53,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-19 20:31:53,767 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:31:53,768 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:31:53,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1112,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 20:31:53,968 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:31:53,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:31:53,968 INFO L82 PathProgramCache]: Analyzing trace with hash -424444597, now seen corresponding path program 26 times [2021-02-19 20:31:53,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:31:53,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3763104] [2021-02-19 20:31:53,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:31:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:31:54,529 WARN L202 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2021-02-19 20:31:54,756 WARN L202 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2021-02-19 20:31:55,773 WARN L202 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 34 [2021-02-19 20:31:56,713 WARN L202 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 40 [2021-02-19 20:31:57,293 WARN L202 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 46 [2021-02-19 20:31:57,634 WARN L202 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 22 [2021-02-19 20:31:57,907 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:31:57,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3763104] [2021-02-19 20:31:57,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141433218] [2021-02-19 20:31:57,907 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 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 [2021-02-19 20:31:57,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 20:31:57,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 20:31:57,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 27 conjunts are in the unsatisfiable core [2021-02-19 20:31:57,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:31:58,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:31:58,495 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:58,557 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:31:58,560 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 20:31:58,561 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:49, output treesize:48 [2021-02-19 20:31:58,960 WARN L202 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-02-19 20:31:59,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:31:59,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:31:59,056 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:59,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:31:59,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:31:59,098 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:59,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:31:59,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:31:59,140 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:59,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:31:59,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:31:59,176 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:31:59,606 WARN L202 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-02-19 20:31:59,607 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:31:59,611 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-02-19 20:31:59,612 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:309, output treesize:305 [2021-02-19 20:32:00,232 WARN L202 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-02-19 20:32:01,759 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 51 treesize of output 35 [2021-02-19 20:32:01,767 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:03,549 WARN L202 SmtUtils]: Spent 1.78 s on a formula simplification that was a NOOP. DAG size: 345 [2021-02-19 20:32:03,551 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:32:03,578 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 49 treesize of output 35 [2021-02-19 20:32:03,585 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:05,217 WARN L202 SmtUtils]: Spent 1.63 s on a formula simplification that was a NOOP. DAG size: 339 [2021-02-19 20:32:05,218 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:32:05,244 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 49 treesize of output 35 [2021-02-19 20:32:05,251 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:06,795 WARN L202 SmtUtils]: Spent 1.54 s on a formula simplification that was a NOOP. DAG size: 333 [2021-02-19 20:32:06,796 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:32:06,819 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 51 treesize of output 33 [2021-02-19 20:32:06,824 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:08,306 WARN L202 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 323 DAG size of output: 160 [2021-02-19 20:32:08,307 INFO L628 ElimStorePlain]: treesize reduction 551, result has 48.6 percent of original size [2021-02-19 20:32:08,308 INFO L518 ElimStorePlain]: Eliminatee v_prenex_303 vanished before elimination [2021-02-19 20:32:08,308 INFO L518 ElimStorePlain]: Eliminatee v_prenex_304 vanished before elimination [2021-02-19 20:32:08,322 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 51 treesize of output 35 [2021-02-19 20:32:08,328 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:09,035 WARN L202 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-02-19 20:32:09,037 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:32:09,037 INFO L518 ElimStorePlain]: Eliminatee v_prenex_317 vanished before elimination [2021-02-19 20:32:09,037 INFO L518 ElimStorePlain]: Eliminatee v_prenex_318 vanished before elimination [2021-02-19 20:32:09,038 INFO L518 ElimStorePlain]: Eliminatee v_prenex_290 vanished before elimination [2021-02-19 20:32:09,038 INFO L518 ElimStorePlain]: Eliminatee v_prenex_291 vanished before elimination [2021-02-19 20:32:09,038 INFO L518 ElimStorePlain]: Eliminatee v_prenex_292 vanished before elimination [2021-02-19 20:32:09,038 INFO L518 ElimStorePlain]: Eliminatee v_prenex_293 vanished before elimination [2021-02-19 20:32:09,038 INFO L518 ElimStorePlain]: Eliminatee v_prenex_294 vanished before elimination [2021-02-19 20:32:09,038 INFO L518 ElimStorePlain]: Eliminatee v_prenex_295 vanished before elimination [2021-02-19 20:32:09,038 INFO L518 ElimStorePlain]: Eliminatee v_prenex_296 vanished before elimination [2021-02-19 20:32:09,057 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 51 treesize of output 35 [2021-02-19 20:32:09,064 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:09,719 WARN L202 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2021-02-19 20:32:09,721 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:32:09,738 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 55 treesize of output 35 [2021-02-19 20:32:09,745 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:10,709 WARN L202 SmtUtils]: Spent 963.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 101 [2021-02-19 20:32:10,711 INFO L628 ElimStorePlain]: treesize reduction 135, result has 70.5 percent of original size [2021-02-19 20:32:10,725 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 49 treesize of output 33 [2021-02-19 20:32:10,732 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:11,175 WARN L202 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-02-19 20:32:11,177 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:32:11,191 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 49 treesize of output 35 [2021-02-19 20:32:11,198 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:11,604 WARN L202 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-02-19 20:32:11,606 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:32:11,606 INFO L518 ElimStorePlain]: Eliminatee v_prenex_311 vanished before elimination [2021-02-19 20:32:11,606 INFO L518 ElimStorePlain]: Eliminatee v_prenex_312 vanished before elimination [2021-02-19 20:32:11,606 INFO L518 ElimStorePlain]: Eliminatee v_prenex_313 vanished before elimination [2021-02-19 20:32:11,606 INFO L518 ElimStorePlain]: Eliminatee v_prenex_314 vanished before elimination [2021-02-19 20:32:11,607 INFO L518 ElimStorePlain]: Eliminatee v_prenex_315 vanished before elimination [2021-02-19 20:32:11,619 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 51 treesize of output 35 [2021-02-19 20:32:11,626 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:11,997 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-02-19 20:32:11,999 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:32:11,999 INFO L518 ElimStorePlain]: Eliminatee A vanished before elimination [2021-02-19 20:32:12,012 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 57 treesize of output 37 [2021-02-19 20:32:12,019 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:12,379 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-02-19 20:32:12,380 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:32:12,381 INFO L518 ElimStorePlain]: Eliminatee B vanished before elimination [2021-02-19 20:32:12,393 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 49 treesize of output 35 [2021-02-19 20:32:12,399 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:12,734 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-02-19 20:32:12,735 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:32:12,749 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 51 treesize of output 33 [2021-02-19 20:32:12,756 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:13,155 WARN L202 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 26 [2021-02-19 20:32:13,157 INFO L628 ElimStorePlain]: treesize reduction 78, result has 56.4 percent of original size [2021-02-19 20:32:13,157 INFO L518 ElimStorePlain]: Eliminatee v_prenex_309 vanished before elimination [2021-02-19 20:32:13,160 INFO L550 ElimStorePlain]: Start of recursive call 1: 32 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-02-19 20:32:13,161 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 32 variables, input treesize:1153, output treesize:93 [2021-02-19 20:32:13,480 WARN L202 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-02-19 20:32:14,292 WARN L202 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2021-02-19 20:32:14,445 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 17 [2021-02-19 20:32:14,452 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:14,463 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 20 treesize of output 14 [2021-02-19 20:32:14,471 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:14,537 INFO L628 ElimStorePlain]: treesize reduction 86, result has 5.5 percent of original size [2021-02-19 20:32:14,538 INFO L518 ElimStorePlain]: Eliminatee v_prenex_319 vanished before elimination [2021-02-19 20:32:14,538 INFO L518 ElimStorePlain]: Eliminatee v_prenex_320 vanished before elimination [2021-02-19 20:32:14,538 INFO L518 ElimStorePlain]: Eliminatee v_prenex_321 vanished before elimination [2021-02-19 20:32:14,541 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 20:32:14,541 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:128, output treesize:5 [2021-02-19 20:32:14,597 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:32:14,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:32:14,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2021-02-19 20:32:14,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057682140] [2021-02-19 20:32:14,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-19 20:32:14,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:32:14,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-19 20:32:14,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2021-02-19 20:32:14,598 INFO L87 Difference]: Start difference. First operand 6552 states and 23263 transitions. Second operand has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:32:15,264 WARN L202 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-02-19 20:32:15,850 WARN L202 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-02-19 20:32:16,824 WARN L202 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2021-02-19 20:32:18,734 WARN L202 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2021-02-19 20:32:20,181 WARN L202 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2021-02-19 20:32:22,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:32:22,190 INFO L93 Difference]: Finished difference Result 9611 states and 33398 transitions. [2021-02-19 20:32:22,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-19 20:32:22,195 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 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 33 [2021-02-19 20:32:22,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:32:22,218 INFO L225 Difference]: With dead ends: 9611 [2021-02-19 20:32:22,219 INFO L226 Difference]: Without dead ends: 9528 [2021-02-19 20:32:22,219 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2021-02-19 20:32:22,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9528 states. [2021-02-19 20:32:22,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9528 to 6592. [2021-02-19 20:32:22,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6592 states, 6591 states have (on average 3.5483234714003946) internal successors, (23387), 6591 states have internal predecessors, (23387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:32:22,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6592 states to 6592 states and 23387 transitions. [2021-02-19 20:32:22,362 INFO L78 Accepts]: Start accepts. Automaton has 6592 states and 23387 transitions. Word has length 33 [2021-02-19 20:32:22,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:32:22,362 INFO L480 AbstractCegarLoop]: Abstraction has 6592 states and 23387 transitions. [2021-02-19 20:32:22,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:32:22,363 INFO L276 IsEmpty]: Start isEmpty. Operand 6592 states and 23387 transitions. [2021-02-19 20:32:22,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-19 20:32:22,376 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:32:22,376 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:32:22,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1113 [2021-02-19 20:32:22,591 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:32:22,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:32:22,592 INFO L82 PathProgramCache]: Analyzing trace with hash 246689023, now seen corresponding path program 27 times [2021-02-19 20:32:22,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:32:22,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117739350] [2021-02-19 20:32:22,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:32:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:32:22,980 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 17 [2021-02-19 20:32:23,177 WARN L202 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 21 [2021-02-19 20:32:23,434 WARN L202 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-02-19 20:32:24,341 WARN L202 SmtUtils]: Spent 834.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 48 [2021-02-19 20:32:25,269 WARN L202 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 55 [2021-02-19 20:32:26,192 WARN L202 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 53 [2021-02-19 20:32:26,985 WARN L202 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 45 [2021-02-19 20:32:27,183 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 16 [2021-02-19 20:32:27,360 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 10 [2021-02-19 20:32:27,437 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:32:27,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117739350] [2021-02-19 20:32:27,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826791299] [2021-02-19 20:32:27,437 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 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 [2021-02-19 20:32:27,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-02-19 20:32:27,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 20:32:27,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 33 conjunts are in the unsatisfiable core [2021-02-19 20:32:27,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:32:28,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:32:28,031 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:28,095 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:32:28,099 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 20:32:28,099 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:49, output treesize:48 [2021-02-19 20:32:28,522 WARN L202 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-02-19 20:32:28,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:32:28,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2021-02-19 20:32:28,618 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:28,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:32:28,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2021-02-19 20:32:28,662 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:28,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:32:28,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2021-02-19 20:32:28,705 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:28,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:32:28,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2021-02-19 20:32:28,742 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:29,240 WARN L202 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-02-19 20:32:29,242 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:32:29,247 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-02-19 20:32:29,247 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:313, output treesize:309 [2021-02-19 20:32:29,789 WARN L202 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-02-19 20:32:30,276 WARN L202 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-02-19 20:32:31,590 WARN L202 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-02-19 20:32:36,311 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 40 treesize of output 28 [2021-02-19 20:32:36,318 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:36,361 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 49 treesize of output 35 [2021-02-19 20:32:36,368 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:36,425 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 40 treesize of output 28 [2021-02-19 20:32:36,432 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:36,458 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 49 treesize of output 35 [2021-02-19 20:32:36,465 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:43,064 WARN L202 SmtUtils]: Spent 6.60 s on a formula simplification. DAG size of input: 221 DAG size of output: 207 [2021-02-19 20:32:43,066 INFO L628 ElimStorePlain]: treesize reduction 684, result has 69.7 percent of original size [2021-02-19 20:32:43,113 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 49 treesize of output 33 [2021-02-19 20:32:43,121 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:43,144 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 51 treesize of output 33 [2021-02-19 20:32:43,151 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:46,437 WARN L202 SmtUtils]: Spent 3.29 s on a formula simplification. DAG size of input: 197 DAG size of output: 133 [2021-02-19 20:32:46,440 INFO L628 ElimStorePlain]: treesize reduction 827, result has 45.5 percent of original size [2021-02-19 20:32:46,457 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 51 treesize of output 35 [2021-02-19 20:32:46,465 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:47,784 WARN L202 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 128 [2021-02-19 20:32:47,786 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:32:47,822 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 51 treesize of output 35 [2021-02-19 20:32:47,829 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:47,847 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 42 treesize of output 28 [2021-02-19 20:32:47,854 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:49,952 WARN L202 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 123 DAG size of output: 122 [2021-02-19 20:32:49,953 INFO L628 ElimStorePlain]: treesize reduction 57, result has 91.2 percent of original size [2021-02-19 20:32:49,965 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 57 treesize of output 37 [2021-02-19 20:32:49,970 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:52,028 WARN L202 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2021-02-19 20:32:52,029 INFO L628 ElimStorePlain]: treesize reduction 9, result has 98.4 percent of original size [2021-02-19 20:32:52,068 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 42 treesize of output 28 [2021-02-19 20:32:52,074 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:52,092 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 42 treesize of output 28 [2021-02-19 20:32:52,100 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:53,119 WARN L202 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 107 [2021-02-19 20:32:53,121 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:32:53,137 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 57 treesize of output 37 [2021-02-19 20:32:53,144 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:54,448 WARN L202 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 93 DAG size of output: 67 [2021-02-19 20:32:54,450 INFO L628 ElimStorePlain]: treesize reduction 189, result has 61.9 percent of original size [2021-02-19 20:32:54,483 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 42 treesize of output 28 [2021-02-19 20:32:54,491 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:54,504 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 44 treesize of output 28 [2021-02-19 20:32:54,512 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:55,035 WARN L202 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 30 [2021-02-19 20:32:55,037 INFO L628 ElimStorePlain]: treesize reduction 142, result has 43.4 percent of original size [2021-02-19 20:32:55,037 INFO L518 ElimStorePlain]: Eliminatee v_prenex_324 vanished before elimination [2021-02-19 20:32:55,037 INFO L518 ElimStorePlain]: Eliminatee v_prenex_325 vanished before elimination [2021-02-19 20:32:55,038 INFO L518 ElimStorePlain]: Eliminatee v_prenex_326 vanished before elimination [2021-02-19 20:32:55,038 INFO L518 ElimStorePlain]: Eliminatee v_prenex_327 vanished before elimination [2021-02-19 20:32:55,038 INFO L518 ElimStorePlain]: Eliminatee v_prenex_328 vanished before elimination [2021-02-19 20:32:55,038 INFO L518 ElimStorePlain]: Eliminatee A vanished before elimination [2021-02-19 20:32:55,038 INFO L518 ElimStorePlain]: Eliminatee v_prenex_329 vanished before elimination [2021-02-19 20:32:55,038 INFO L518 ElimStorePlain]: Eliminatee B vanished before elimination [2021-02-19 20:32:55,042 INFO L550 ElimStorePlain]: Start of recursive call 1: 16 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-02-19 20:32:55,042 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 16 variables, input treesize:2337, output treesize:109 [2021-02-19 20:32:55,432 WARN L202 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-02-19 20:32:55,879 WARN L202 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-02-19 20:32:56,041 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 20 treesize of output 12 [2021-02-19 20:32:56,048 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:32:56,160 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 5 [2021-02-19 20:32:56,162 INFO L628 ElimStorePlain]: treesize reduction 135, result has 3.6 percent of original size [2021-02-19 20:32:56,162 INFO L518 ElimStorePlain]: Eliminatee C vanished before elimination [2021-02-19 20:32:56,162 INFO L518 ElimStorePlain]: Eliminatee v_prenex_336 vanished before elimination [2021-02-19 20:32:56,162 INFO L518 ElimStorePlain]: Eliminatee v_prenex_337 vanished before elimination [2021-02-19 20:32:56,165 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 20:32:56,166 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:155, output treesize:5 [2021-02-19 20:32:56,228 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:32:56,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:32:56,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-02-19 20:32:56,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757453557] [2021-02-19 20:32:56,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-19 20:32:56,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:32:56,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-19 20:32:56,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2021-02-19 20:32:56,229 INFO L87 Difference]: Start difference. First operand 6592 states and 23387 transitions. Second operand has 25 states, 25 states have (on average 2.44) internal successors, (61), 24 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:32:56,539 WARN L202 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2021-02-19 20:32:57,180 WARN L202 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2021-02-19 20:32:57,557 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 32 [2021-02-19 20:32:58,566 WARN L202 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2021-02-19 20:33:00,499 WARN L202 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 94 DAG size of output: 75 [2021-02-19 20:33:02,548 WARN L202 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 99 DAG size of output: 66 [2021-02-19 20:33:05,109 WARN L202 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2021-02-19 20:33:07,042 WARN L202 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 134 DAG size of output: 53 [2021-02-19 20:33:09,436 WARN L202 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 104 DAG size of output: 64 [2021-02-19 20:33:10,959 WARN L202 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 99 DAG size of output: 79 [2021-02-19 20:33:11,367 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-19 20:33:13,546 WARN L202 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 94 DAG size of output: 73 [2021-02-19 20:33:15,297 WARN L202 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2021-02-19 20:33:16,077 WARN L202 SmtUtils]: Spent 586.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-02-19 20:33:16,509 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2021-02-19 20:33:18,387 WARN L202 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 99 DAG size of output: 66 [2021-02-19 20:33:19,085 WARN L202 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2021-02-19 20:33:20,244 WARN L202 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2021-02-19 20:33:21,597 WARN L202 SmtUtils]: Spent 975.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2021-02-19 20:33:22,162 WARN L202 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2021-02-19 20:33:24,262 WARN L202 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 106 DAG size of output: 63 [2021-02-19 20:33:25,430 WARN L202 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2021-02-19 20:33:26,638 WARN L202 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2021-02-19 20:33:27,332 WARN L202 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2021-02-19 20:33:27,872 WARN L202 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2021-02-19 20:33:28,227 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2021-02-19 20:33:29,943 WARN L202 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 111 DAG size of output: 68 [2021-02-19 20:33:31,054 WARN L202 SmtUtils]: Spent 920.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2021-02-19 20:33:31,649 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-02-19 20:33:32,784 WARN L202 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 54 [2021-02-19 20:33:33,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:33:33,488 INFO L93 Difference]: Finished difference Result 10702 states and 36957 transitions. [2021-02-19 20:33:33,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-02-19 20:33:33,493 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 24 states have internal predecessors, (61), 0 states have call successors, (0), 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 33 [2021-02-19 20:33:33,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:33:33,516 INFO L225 Difference]: With dead ends: 10702 [2021-02-19 20:33:33,517 INFO L226 Difference]: Without dead ends: 10553 [2021-02-19 20:33:33,518 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1077 ImplicationChecksByTransitivity, 40.4s TimeCoverageRelationStatistics Valid=533, Invalid=2659, Unknown=0, NotChecked=0, Total=3192 [2021-02-19 20:33:33,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10553 states. [2021-02-19 20:33:33,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10553 to 6774. [2021-02-19 20:33:33,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6774 states, 6773 states have (on average 3.5402332791968107) internal successors, (23978), 6773 states have internal predecessors, (23978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:33:33,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6774 states to 6774 states and 23978 transitions. [2021-02-19 20:33:33,660 INFO L78 Accepts]: Start accepts. Automaton has 6774 states and 23978 transitions. Word has length 33 [2021-02-19 20:33:33,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:33:33,660 INFO L480 AbstractCegarLoop]: Abstraction has 6774 states and 23978 transitions. [2021-02-19 20:33:33,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 24 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:33:33,660 INFO L276 IsEmpty]: Start isEmpty. Operand 6774 states and 23978 transitions. [2021-02-19 20:33:33,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-19 20:33:33,671 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:33:33,671 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:33:33,886 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1146 [2021-02-19 20:33:33,886 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:33:33,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:33:33,886 INFO L82 PathProgramCache]: Analyzing trace with hash 280016075, now seen corresponding path program 28 times [2021-02-19 20:33:33,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:33:33,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542199744] [2021-02-19 20:33:33,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:33:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:33:34,332 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 20 [2021-02-19 20:33:34,991 WARN L202 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 26 [2021-02-19 20:33:35,630 WARN L202 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 33 [2021-02-19 20:33:36,328 WARN L202 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 25 [2021-02-19 20:33:36,832 WARN L202 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 21 [2021-02-19 20:33:37,268 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 17 [2021-02-19 20:33:37,367 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:33:37,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542199744] [2021-02-19 20:33:37,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862942248] [2021-02-19 20:33:37,367 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 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 [2021-02-19 20:33:37,392 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 20:33:37,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 20:33:37,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 28 conjunts are in the unsatisfiable core [2021-02-19 20:33:37,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:33:37,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-02-19 20:33:37,788 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:33:37,841 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:33:37,844 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 20:33:37,845 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:49, output treesize:48 [2021-02-19 20:33:38,197 WARN L202 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-02-19 20:33:38,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-02-19 20:33:38,278 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:33:38,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-02-19 20:33:38,313 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:33:38,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-02-19 20:33:38,349 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:33:38,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-02-19 20:33:38,377 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:33:38,714 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-02-19 20:33:38,715 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:33:38,719 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-02-19 20:33:38,719 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:245, output treesize:241 [2021-02-19 20:33:39,145 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-02-19 20:33:40,123 WARN L202 SmtUtils]: Spent 780.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-02-19 20:33:40,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-02-19 20:33:40,215 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:33:40,230 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 35 treesize of output 25 [2021-02-19 20:33:40,235 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:33:40,246 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 34 treesize of output 28 [2021-02-19 20:33:40,251 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:33:41,717 WARN L202 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2021-02-19 20:33:41,719 INFO L628 ElimStorePlain]: treesize reduction 143, result has 78.9 percent of original size [2021-02-19 20:33:41,737 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 28 treesize of output 22 [2021-02-19 20:33:41,743 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:33:41,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-02-19 20:33:41,762 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-02-19 20:33:42,428 WARN L202 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-02-19 20:33:42,429 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:33:42,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2021-02-19 20:33:42,454 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-02-19 20:33:42,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 19 [2021-02-19 20:33:42,480 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-02-19 20:33:42,492 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 28 treesize of output 22 [2021-02-19 20:33:42,499 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-02-19 20:33:43,620 WARN L202 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-02-19 20:33:43,622 INFO L628 ElimStorePlain]: treesize reduction 51, result has 88.5 percent of original size [2021-02-19 20:33:43,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 19 [2021-02-19 20:33:43,646 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-02-19 20:33:43,660 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 28 treesize of output 22 [2021-02-19 20:33:43,667 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-02-19 20:33:44,202 WARN L202 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-19 20:33:44,203 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:33:44,206 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-02-19 20:33:44,206 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 4 variables, input treesize:725, output treesize:351 [2021-02-19 20:33:44,823 WARN L202 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-02-19 20:33:47,572 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 17 [2021-02-19 20:33:47,576 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:33:47,601 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 17 [2021-02-19 20:33:47,606 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:33:51,217 WARN L202 SmtUtils]: Spent 3.61 s on a formula simplification that was a NOOP. DAG size: 410 [2021-02-19 20:33:51,219 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:33:51,265 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 27 treesize of output 15 [2021-02-19 20:33:51,271 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:33:51,299 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 15 [2021-02-19 20:33:51,306 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:33:52,464 WARN L202 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 400 DAG size of output: 5 [2021-02-19 20:33:52,466 INFO L628 ElimStorePlain]: treesize reduction 1712, result has 0.3 percent of original size [2021-02-19 20:33:52,466 INFO L518 ElimStorePlain]: Eliminatee v_prenex_362 vanished before elimination [2021-02-19 20:33:52,466 INFO L518 ElimStorePlain]: Eliminatee v_prenex_363 vanished before elimination [2021-02-19 20:33:52,466 INFO L518 ElimStorePlain]: Eliminatee v_prenex_364 vanished before elimination [2021-02-19 20:33:52,466 INFO L518 ElimStorePlain]: Eliminatee v_prenex_342 vanished before elimination [2021-02-19 20:33:52,466 INFO L518 ElimStorePlain]: Eliminatee v_prenex_365 vanished before elimination [2021-02-19 20:33:52,466 INFO L518 ElimStorePlain]: Eliminatee v_prenex_343 vanished before elimination [2021-02-19 20:33:52,466 INFO L518 ElimStorePlain]: Eliminatee v_prenex_344 vanished before elimination [2021-02-19 20:33:52,466 INFO L518 ElimStorePlain]: Eliminatee v_prenex_366 vanished before elimination [2021-02-19 20:33:52,466 INFO L518 ElimStorePlain]: Eliminatee v_prenex_345 vanished before elimination [2021-02-19 20:33:52,466 INFO L518 ElimStorePlain]: Eliminatee v_prenex_367 vanished before elimination [2021-02-19 20:33:52,466 INFO L518 ElimStorePlain]: Eliminatee v_prenex_368 vanished before elimination [2021-02-19 20:33:52,466 INFO L518 ElimStorePlain]: Eliminatee v_prenex_346 vanished before elimination [2021-02-19 20:33:52,466 INFO L518 ElimStorePlain]: Eliminatee v_prenex_369 vanished before elimination [2021-02-19 20:33:52,466 INFO L518 ElimStorePlain]: Eliminatee v_prenex_347 vanished before elimination [2021-02-19 20:33:52,466 INFO L518 ElimStorePlain]: Eliminatee v_prenex_348 vanished before elimination [2021-02-19 20:33:52,467 INFO L518 ElimStorePlain]: Eliminatee v_prenex_370 vanished before elimination [2021-02-19 20:33:52,467 INFO L518 ElimStorePlain]: Eliminatee v_prenex_371 vanished before elimination [2021-02-19 20:33:52,467 INFO L518 ElimStorePlain]: Eliminatee v_prenex_350 vanished before elimination [2021-02-19 20:33:52,467 INFO L518 ElimStorePlain]: Eliminatee v_prenex_372 vanished before elimination [2021-02-19 20:33:52,467 INFO L518 ElimStorePlain]: Eliminatee v_prenex_351 vanished before elimination [2021-02-19 20:33:52,467 INFO L518 ElimStorePlain]: Eliminatee v_prenex_373 vanished before elimination [2021-02-19 20:33:52,467 INFO L518 ElimStorePlain]: Eliminatee v_prenex_374 vanished before elimination [2021-02-19 20:33:52,467 INFO L518 ElimStorePlain]: Eliminatee v_prenex_352 vanished before elimination [2021-02-19 20:33:52,467 INFO L518 ElimStorePlain]: Eliminatee v_prenex_375 vanished before elimination [2021-02-19 20:33:52,467 INFO L518 ElimStorePlain]: Eliminatee v_prenex_353 vanished before elimination [2021-02-19 20:33:52,467 INFO L518 ElimStorePlain]: Eliminatee v_prenex_376 vanished before elimination [2021-02-19 20:33:52,467 INFO L518 ElimStorePlain]: Eliminatee v_prenex_354 vanished before elimination [2021-02-19 20:33:52,467 INFO L518 ElimStorePlain]: Eliminatee v_prenex_377 vanished before elimination [2021-02-19 20:33:52,467 INFO L518 ElimStorePlain]: Eliminatee v_prenex_355 vanished before elimination [2021-02-19 20:33:52,467 INFO L518 ElimStorePlain]: Eliminatee v_prenex_356 vanished before elimination [2021-02-19 20:33:52,467 INFO L518 ElimStorePlain]: Eliminatee v_prenex_378 vanished before elimination [2021-02-19 20:33:52,467 INFO L518 ElimStorePlain]: Eliminatee v_prenex_357 vanished before elimination [2021-02-19 20:33:52,467 INFO L518 ElimStorePlain]: Eliminatee v_prenex_379 vanished before elimination [2021-02-19 20:33:52,467 INFO L518 ElimStorePlain]: Eliminatee v_prenex_358 vanished before elimination [2021-02-19 20:33:52,467 INFO L518 ElimStorePlain]: Eliminatee v_prenex_359 vanished before elimination [2021-02-19 20:33:52,468 INFO L518 ElimStorePlain]: Eliminatee v_prenex_349 vanished before elimination [2021-02-19 20:33:52,468 INFO L518 ElimStorePlain]: Eliminatee A vanished before elimination [2021-02-19 20:33:52,468 INFO L518 ElimStorePlain]: Eliminatee B vanished before elimination [2021-02-19 20:33:52,470 INFO L550 ElimStorePlain]: Start of recursive call 1: 40 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 20:33:52,470 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 40 variables, input treesize:1801, output treesize:5 [2021-02-19 20:33:52,553 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:33:52,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 20:33:52,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2021-02-19 20:33:52,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926924793] [2021-02-19 20:33:52,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-19 20:33:52,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:33:52,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-19 20:33:52,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2021-02-19 20:33:52,554 INFO L87 Difference]: Start difference. First operand 6774 states and 23978 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 22 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:33:54,089 WARN L202 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-02-19 20:33:54,330 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2021-02-19 20:33:54,644 WARN L202 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 33 [2021-02-19 20:33:55,013 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2021-02-19 20:33:55,837 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2021-02-19 20:33:57,123 WARN L202 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2021-02-19 20:33:58,964 WARN L202 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2021-02-19 20:34:00,514 WARN L202 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2021-02-19 20:34:02,198 WARN L202 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-02-19 20:34:03,553 WARN L202 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-19 20:34:04,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:34:04,042 INFO L93 Difference]: Finished difference Result 10760 states and 37359 transitions. [2021-02-19 20:34:04,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-19 20:34:04,046 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 22 states have internal predecessors, (58), 0 states have call successors, (0), 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 33 [2021-02-19 20:34:04,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:34:04,075 INFO L225 Difference]: With dead ends: 10760 [2021-02-19 20:34:04,075 INFO L226 Difference]: Without dead ends: 10596 [2021-02-19 20:34:04,076 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=255, Invalid=1077, Unknown=0, NotChecked=0, Total=1332 [2021-02-19 20:34:04,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10596 states. [2021-02-19 20:34:04,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10596 to 6849. [2021-02-19 20:34:04,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6849 states, 6848 states have (on average 3.5392815420560746) internal successors, (24237), 6848 states have internal predecessors, (24237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:34:04,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6849 states to 6849 states and 24237 transitions. [2021-02-19 20:34:04,254 INFO L78 Accepts]: Start accepts. Automaton has 6849 states and 24237 transitions. Word has length 33 [2021-02-19 20:34:04,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:34:04,254 INFO L480 AbstractCegarLoop]: Abstraction has 6849 states and 24237 transitions. [2021-02-19 20:34:04,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 22 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 20:34:04,254 INFO L276 IsEmpty]: Start isEmpty. Operand 6849 states and 24237 transitions. [2021-02-19 20:34:04,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-19 20:34:04,268 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:34:04,268 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 20:34:04,494 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1393,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 20:34:04,494 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:34:04,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:34:04,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1660477863, now seen corresponding path program 29 times [2021-02-19 20:34:04,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:34:04,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145398941] [2021-02-19 20:34:04,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:34:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:34:04,955 WARN L202 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 22 [2021-02-19 20:34:05,097 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-02-19 20:34:05,845 WARN L202 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 41 [2021-02-19 20:34:06,409 WARN L202 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 39 [2021-02-19 20:34:06,671 WARN L202 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 16 [2021-02-19 20:34:06,828 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:34:06,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145398941] [2021-02-19 20:34:06,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660035588] [2021-02-19 20:34:06,828 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 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 [2021-02-19 20:34:06,860 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-02-19 20:34:06,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 20:34:06,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 27 conjunts are in the unsatisfiable core [2021-02-19 20:34:06,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 20:34:07,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-02-19 20:34:07,029 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:34:07,092 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:34:07,096 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 20:34:07,096 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:52, output treesize:51 [2021-02-19 20:34:07,422 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-02-19 20:34:07,557 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-02-19 20:34:07,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:34:07,563 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:34:07,646 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-02-19 20:34:07,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:34:07,652 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:34:07,731 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-02-19 20:34:07,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:34:07,737 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:34:07,812 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-02-19 20:34:07,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-02-19 20:34:07,818 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:34:08,264 WARN L202 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-02-19 20:34:08,266 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:34:08,273 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2021-02-19 20:34:08,273 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:385, output treesize:381 [2021-02-19 20:34:08,884 WARN L202 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-02-19 20:34:10,691 WARN L202 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 134 DAG size of output: 110 [2021-02-19 20:34:15,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:16,261 WARN L202 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-02-19 20:34:16,263 INFO L354 Elim1Store]: treesize reduction 10, result has 77.8 percent of original size [2021-02-19 20:34:16,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 66 [2021-02-19 20:34:16,318 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 20:34:16,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:16,659 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-02-19 20:34:16,660 INFO L354 Elim1Store]: treesize reduction 10, result has 77.8 percent of original size [2021-02-19 20:34:16,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 66 [2021-02-19 20:34:16,732 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 20:34:16,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:17,020 WARN L202 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 19 [2021-02-19 20:34:17,021 INFO L354 Elim1Store]: treesize reduction 23, result has 48.9 percent of original size [2021-02-19 20:34:17,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 52 treesize of output 53 [2021-02-19 20:34:17,038 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 20:34:17,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:17,295 WARN L202 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 19 [2021-02-19 20:34:17,296 INFO L354 Elim1Store]: treesize reduction 23, result has 48.9 percent of original size [2021-02-19 20:34:17,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 52 treesize of output 53 [2021-02-19 20:34:17,315 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 20:34:25,274 WARN L202 SmtUtils]: Spent 7.96 s on a formula simplification. DAG size of input: 277 DAG size of output: 252 [2021-02-19 20:34:25,276 INFO L628 ElimStorePlain]: treesize reduction 302, result has 88.3 percent of original size [2021-02-19 20:34:25,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:25,529 WARN L202 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2021-02-19 20:34:25,531 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:34:25,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 76 treesize of output 92 [2021-02-19 20:34:25,728 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 3 xjuncts. [2021-02-19 20:34:25,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:26,041 WARN L202 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 19 [2021-02-19 20:34:26,043 INFO L354 Elim1Store]: treesize reduction 23, result has 48.9 percent of original size [2021-02-19 20:34:26,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 73 treesize of output 70 [2021-02-19 20:34:26,119 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 3 xjuncts. [2021-02-19 20:34:26,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:26,429 WARN L202 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 19 [2021-02-19 20:34:26,430 INFO L354 Elim1Store]: treesize reduction 23, result has 48.9 percent of original size [2021-02-19 20:34:26,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 66 treesize of output 63 [2021-02-19 20:34:26,479 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 4 xjuncts. [2021-02-19 20:34:26,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:26,564 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-02-19 20:34:26,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 74 treesize of output 1 [2021-02-19 20:34:26,569 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-02-19 20:34:33,975 WARN L202 SmtUtils]: Spent 7.40 s on a formula simplification. DAG size of input: 284 DAG size of output: 233 [2021-02-19 20:34:33,977 INFO L628 ElimStorePlain]: treesize reduction 562, result has 77.9 percent of original size [2021-02-19 20:34:34,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:34,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:34,257 WARN L202 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 19 [2021-02-19 20:34:34,258 INFO L354 Elim1Store]: treesize reduction 10, result has 71.4 percent of original size [2021-02-19 20:34:34,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 56 [2021-02-19 20:34:34,305 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-02-19 20:34:34,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:34,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:34,608 WARN L202 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 19 [2021-02-19 20:34:34,609 INFO L354 Elim1Store]: treesize reduction 10, result has 71.4 percent of original size [2021-02-19 20:34:34,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 56 [2021-02-19 20:34:34,666 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-02-19 20:34:34,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:34,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:34,895 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 11 [2021-02-19 20:34:34,896 INFO L354 Elim1Store]: treesize reduction 23, result has 34.3 percent of original size [2021-02-19 20:34:34,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 52 treesize of output 43 [2021-02-19 20:34:34,910 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-02-19 20:34:34,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:34,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:35,082 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 8 [2021-02-19 20:34:35,084 INFO L354 Elim1Store]: treesize reduction 27, result has 22.9 percent of original size [2021-02-19 20:34:35,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 52 treesize of output 39 [2021-02-19 20:34:35,091 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-02-19 20:34:42,551 WARN L202 SmtUtils]: Spent 7.46 s on a formula simplification. DAG size of input: 251 DAG size of output: 238 [2021-02-19 20:34:42,553 INFO L628 ElimStorePlain]: treesize reduction 124, result has 94.0 percent of original size [2021-02-19 20:34:42,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:42,900 WARN L202 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2021-02-19 20:34:42,901 INFO L354 Elim1Store]: treesize reduction 4, result has 91.1 percent of original size [2021-02-19 20:34:42,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 64 treesize of output 82 [2021-02-19 20:34:43,038 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-02-19 20:34:43,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:43,192 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-02-19 20:34:43,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 1 [2021-02-19 20:34:43,199 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-02-19 20:34:43,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:43,349 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-02-19 20:34:43,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 1 [2021-02-19 20:34:43,355 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-02-19 20:34:43,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:43,440 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-02-19 20:34:43,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 77 treesize of output 1 [2021-02-19 20:34:43,446 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-02-19 20:34:49,327 WARN L202 SmtUtils]: Spent 5.88 s on a formula simplification. DAG size of input: 229 DAG size of output: 217 [2021-02-19 20:34:49,329 INFO L628 ElimStorePlain]: treesize reduction 112, result has 93.8 percent of original size [2021-02-19 20:34:49,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:49,612 WARN L202 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2021-02-19 20:34:49,613 INFO L354 Elim1Store]: treesize reduction 14, result has 68.9 percent of original size [2021-02-19 20:34:49,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 77 [2021-02-19 20:34:49,658 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-02-19 20:34:49,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:49,962 WARN L202 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2021-02-19 20:34:49,963 INFO L354 Elim1Store]: treesize reduction 14, result has 68.9 percent of original size [2021-02-19 20:34:49,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 77 [2021-02-19 20:34:50,004 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-02-19 20:34:50,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:50,282 WARN L202 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 19 [2021-02-19 20:34:50,284 INFO L354 Elim1Store]: treesize reduction 22, result has 51.1 percent of original size [2021-02-19 20:34:50,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 69 [2021-02-19 20:34:50,307 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-02-19 20:34:50,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:50,463 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 13 [2021-02-19 20:34:50,464 INFO L354 Elim1Store]: treesize reduction 31, result has 31.1 percent of original size [2021-02-19 20:34:50,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 60 [2021-02-19 20:34:50,470 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-02-19 20:34:58,670 WARN L202 SmtUtils]: Spent 8.20 s on a formula simplification. DAG size of input: 240 DAG size of output: 224 [2021-02-19 20:34:58,672 INFO L628 ElimStorePlain]: treesize reduction 233, result has 87.6 percent of original size [2021-02-19 20:34:58,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:58,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:58,841 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 20:34:58,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 57 [2021-02-19 20:34:58,942 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 3 xjuncts. [2021-02-19 20:34:58,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:58,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:59,181 WARN L202 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 15 [2021-02-19 20:34:59,182 INFO L354 Elim1Store]: treesize reduction 18, result has 48.6 percent of original size [2021-02-19 20:34:59,183 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 92 treesize of output 80 [2021-02-19 20:34:59,242 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 3 xjuncts. [2021-02-19 20:34:59,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:59,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:59,349 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-02-19 20:34:59,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 1 [2021-02-19 20:34:59,354 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-02-19 20:34:59,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:59,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:34:59,437 INFO L354 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2021-02-19 20:34:59,438 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 90 treesize of output 1 [2021-02-19 20:34:59,443 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-02-19 20:35:04,163 WARN L202 SmtUtils]: Spent 4.72 s on a formula simplification. DAG size of input: 218 DAG size of output: 203 [2021-02-19 20:35:04,165 INFO L628 ElimStorePlain]: treesize reduction 181, result has 88.5 percent of original size [2021-02-19 20:35:04,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:35:04,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:35:04,418 WARN L202 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 19 [2021-02-19 20:35:04,420 INFO L354 Elim1Store]: treesize reduction 10, result has 71.4 percent of original size [2021-02-19 20:35:04,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 57 treesize of output 63 [2021-02-19 20:35:04,460 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 2 xjuncts. [2021-02-19 20:35:04,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:35:04,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:35:04,712 WARN L202 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 15 [2021-02-19 20:35:04,713 INFO L354 Elim1Store]: treesize reduction 18, result has 48.6 percent of original size [2021-02-19 20:35:04,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 59 treesize of output 55 [2021-02-19 20:35:04,738 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 2 xjuncts. [2021-02-19 20:35:04,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:35:04,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:35:05,007 WARN L202 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 19 [2021-02-19 20:35:05,009 INFO L354 Elim1Store]: treesize reduction 10, result has 71.4 percent of original size [2021-02-19 20:35:05,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 59 treesize of output 63 [2021-02-19 20:35:05,052 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 2 xjuncts. [2021-02-19 20:35:05,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:35:05,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:35:05,214 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 8 [2021-02-19 20:35:05,216 INFO L354 Elim1Store]: treesize reduction 27, result has 22.9 percent of original size [2021-02-19 20:35:05,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 57 treesize of output 46 [2021-02-19 20:35:05,222 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-02-19 20:35:10,254 WARN L202 SmtUtils]: Spent 5.03 s on a formula simplification. DAG size of input: 228 DAG size of output: 213 [2021-02-19 20:35:10,255 INFO L628 ElimStorePlain]: treesize reduction 197, result has 87.5 percent of original size [2021-02-19 20:35:10,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:35:10,609 WARN L202 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2021-02-19 20:35:10,611 INFO L354 Elim1Store]: treesize reduction 4, result has 91.1 percent of original size [2021-02-19 20:35:10,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 94 treesize of output 104 [2021-02-19 20:35:10,821 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-02-19 20:35:10,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:35:10,985 INFO L354 Elim1Store]: treesize reduction 27, result has 27.0 percent of original size [2021-02-19 20:35:10,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 84 treesize of output 69 [2021-02-19 20:35:11,011 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-02-19 20:35:11,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:35:11,205 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 10 [2021-02-19 20:35:11,207 INFO L354 Elim1Store]: treesize reduction 27, result has 27.0 percent of original size [2021-02-19 20:35:11,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 40 [2021-02-19 20:35:11,214 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-02-19 20:35:11,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:35:11,300 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-02-19 20:35:11,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 1 [2021-02-19 20:35:11,305 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-02-19 20:35:15,702 WARN L202 SmtUtils]: Spent 4.40 s on a formula simplification. DAG size of input: 217 DAG size of output: 190 [2021-02-19 20:35:15,704 INFO L628 ElimStorePlain]: treesize reduction 311, result has 78.5 percent of original size [2021-02-19 20:35:15,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:35:15,972 WARN L202 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 19 [2021-02-19 20:35:15,973 INFO L354 Elim1Store]: treesize reduction 20, result has 55.6 percent of original size [2021-02-19 20:35:15,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 74 treesize of output 74 [2021-02-19 20:35:16,015 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 3 xjuncts. [2021-02-19 20:35:16,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:35:16,239 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 11 [2021-02-19 20:35:16,240 INFO L354 Elim1Store]: treesize reduction 33, result has 26.7 percent of original size [2021-02-19 20:35:16,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 72 treesize of output 61 [2021-02-19 20:35:16,252 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-02-19 20:35:16,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:35:16,508 WARN L202 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2021-02-19 20:35:16,510 INFO L354 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2021-02-19 20:35:16,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 74 treesize of output 66 [2021-02-19 20:35:16,527 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-02-19 20:35:16,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:35:16,690 INFO L354 Elim1Store]: treesize reduction 37, result has 17.8 percent of original size [2021-02-19 20:35:16,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 72 treesize of output 57 [2021-02-19 20:35:16,696 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-02-19 20:35:23,042 WARN L202 SmtUtils]: Spent 6.34 s on a formula simplification. DAG size of input: 212 DAG size of output: 204 [2021-02-19 20:35:23,044 INFO L628 ElimStorePlain]: treesize reduction 162, result has 89.0 percent of original size [2021-02-19 20:35:23,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:35:23,398 WARN L202 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2021-02-19 20:35:23,400 INFO L354 Elim1Store]: treesize reduction 4, result has 91.1 percent of original size [2021-02-19 20:35:23,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 129 treesize of output 131 [2021-02-19 20:35:23,734 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-02-19 20:35:23,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:35:23,856 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-02-19 20:35:23,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 71 treesize of output 1 [2021-02-19 20:35:23,862 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-02-19 20:35:23,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:35:24,273 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2021-02-19 20:35:24,274 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2021-02-19 20:35:24,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 153 treesize of output 143 [2021-02-19 20:35:24,368 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-02-19 20:35:24,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-02-19 20:35:24,705 WARN L202 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2021-02-19 20:35:24,706 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2021-02-19 20:35:24,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 155 treesize of output 143 [2021-02-19 20:35:24,940 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. Received shutdown request... [2021-02-19 20:35:29,656 WARN L219 SmtUtils]: Removed 2 from assertion stack [2021-02-19 20:35:29,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1531 [2021-02-19 20:35:29,857 WARN L545 AbstractCegarLoop]: Verification canceled [2021-02-19 20:35:29,861 WARN L224 ceAbstractionStarter]: Timeout [2021-02-19 20:35:29,861 INFO L202 PluginConnector]: Adding new model three-array-min-MQZ.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 08:35:29 BasicIcfg [2021-02-19 20:35:29,861 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 20:35:29,862 INFO L168 Benchmark]: Toolchain (without parser) took 529833.42 ms. Allocated memory was 255.9 MB in the beginning and 1.0 GB in the end (delta: 767.6 MB). Free memory was 236.4 MB in the beginning and 358.3 MB in the end (delta: -121.8 MB). Peak memory consumption was 904.2 MB. Max. memory is 16.0 GB. [2021-02-19 20:35:29,862 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-02-19 20:35:29,862 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.12 ms. Allocated memory is still 255.9 MB. Free memory was 236.0 MB in the beginning and 234.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-02-19 20:35:29,862 INFO L168 Benchmark]: Boogie Preprocessor took 17.95 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.6 MB in the end (delta: 918.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-02-19 20:35:29,862 INFO L168 Benchmark]: RCFGBuilder took 370.47 ms. Allocated memory is still 255.9 MB. Free memory was 233.3 MB in the beginning and 237.3 MB in the end (delta: -3.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-02-19 20:35:29,862 INFO L168 Benchmark]: TraceAbstraction took 529411.85 ms. Allocated memory was 255.9 MB in the beginning and 1.0 GB in the end (delta: 767.6 MB). Free memory was 237.3 MB in the beginning and 358.3 MB in the end (delta: -121.0 MB). Peak memory consumption was 904.2 MB. Max. memory is 16.0 GB. [2021-02-19 20:35:29,862 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 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.12 ms. Allocated memory is still 255.9 MB. Free memory was 236.0 MB in the beginning and 234.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.95 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.6 MB in the end (delta: 918.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 370.47 ms. Allocated memory is still 255.9 MB. Free memory was 233.3 MB in the beginning and 237.3 MB in the end (delta: -3.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 529411.85 ms. Allocated memory was 255.9 MB in the beginning and 1.0 GB in the end (delta: 767.6 MB). Free memory was 237.3 MB in the beginning and 358.3 MB in the end (delta: -121.0 MB). Peak memory consumption was 904.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 73). Cancelled while BasicCegarLoop was analyzing trace of length 34 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations,while SimplifyDDAWithTimeout was simplifying term of DAG size 287 for 4714ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 529.3s, OverallIterations: 34, TraceHistogramMax: 2, AutomataDifference: 122.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1176 SDtfs, 4745 SDslu, 5855 SDs, 0 SdLazy, 12725 SolverSat, 845 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1359 GetRequests, 688 SyntacticMatches, 4 SemanticMatches, 667 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5754 ImplicationChecksByTransitivity, 147.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6849occurred in iteration=33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.2s AutomataMinimizationTime, 33 MinimizatonAttempts, 48856 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 310.1s InterpolantComputationTime, 1807 NumberOfCodeBlocks, 1807 NumberOfCodeBlocksAsserted, 92 NumberOfCheckSat, 1747 ConstructedInterpolants, 0 QuantifiedInterpolants, 2543643 SizeOfPredicates, 81 NumberOfNonLiveVariables, 2189 ConjunctsInSsa, 478 ConjunctsInUnsatCore, 60 InterpolantComputations, 6 PerfectInterpolantSequences, 153/550 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