/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/poker-hand-symm.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 22:08:23,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 22:08:23,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 22:08:23,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 22:08:23,254 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 [2021-06-05 22:08:23,276 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 22:08:23,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 22:08:23,277 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 22:08:23,277 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 22:08:23,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 22:08:23,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 22:08:23,279 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 22:08:23,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 22:08:23,279 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 22:08:23,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 22:08:23,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 22:08:23,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 22:08:23,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 22:08:23,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 22:08:23,280 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 22:08:23,280 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 22:08:23,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 22:08:23,281 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 22:08:23,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 22:08:23,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 22:08:23,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 22:08:23,282 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 22:08:23,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 22:08:23,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 22:08:23,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 22:08:23,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 22:08:23,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 22:08:23,283 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 22:08:23,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 22:08:23,283 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 22:08:23,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 22:08:23,284 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 22:08:23,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 22:08:23,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 22:08:23,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 22:08:23,618 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 22:08:23,620 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 22:08:23,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/poker-hand-symm.wvr.bpl [2021-06-05 22:08:23,673 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/poker-hand-symm.wvr.bpl' [2021-06-05 22:08:23,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 22:08:23,734 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 22:08:23,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 22:08:23,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 22:08:23,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 22:08:23,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:08:23" (1/1) ... [2021-06-05 22:08:23,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:08:23" (1/1) ... [2021-06-05 22:08:23,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 22:08:23,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 22:08:23,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 22:08:23,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 22:08:23,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:08:23" (1/1) ... [2021-06-05 22:08:23,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:08:23" (1/1) ... [2021-06-05 22:08:23,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:08:23" (1/1) ... [2021-06-05 22:08:23,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:08:23" (1/1) ... [2021-06-05 22:08:23,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:08:23" (1/1) ... [2021-06-05 22:08:23,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:08:23" (1/1) ... [2021-06-05 22:08:23,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:08:23" (1/1) ... [2021-06-05 22:08:23,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 22:08:23,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 22:08:23,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 22:08:23,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 22:08:23,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:08:23" (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 [2021-06-05 22:08:23,876 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 22:08:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 22:08:23,877 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 22:08:23,877 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 22:08:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 22:08:23,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 22:08:23,878 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 22:08:23,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 22:08:23,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 22:08:23,879 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 22:08:24,503 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 22:08:24,503 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-05 22:08:24,504 INFO L202 PluginConnector]: Adding new model poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:08:24 BoogieIcfgContainer [2021-06-05 22:08:24,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 22:08:24,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 22:08:24,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 22:08:24,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 22:08:24,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:08:23" (1/2) ... [2021-06-05 22:08:24,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a43db0b and model type poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 10:08:24, skipping insertion in model container [2021-06-05 22:08:24,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:08:24" (2/2) ... [2021-06-05 22:08:24,510 INFO L111 eAbstractionObserver]: Analyzing ICFG poker-hand-symm.wvr.bpl [2021-06-05 22:08:24,517 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 22:08:24,517 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 22:08:24,518 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 22:08:24,518 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 22:08:24,547 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-05 22:08:24,564 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-05 22:08:24,594 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 22:08:24,594 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 22:08:24,594 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 22:08:24,595 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 22:08:24,595 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 22:08:24,595 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 22:08:24,595 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 22:08:24,595 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 22:08:24,604 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 26 transitions, 68 flow [2021-06-05 22:08:24,617 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 41 states, 39 states have (on average 2.871794871794872) internal successors, (112), 40 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:24,619 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 39 states have (on average 2.871794871794872) internal successors, (112), 40 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:24,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-06-05 22:08:24,624 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:08:24,625 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:08:24,625 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:08:24,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:08:24,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1990166855, now seen corresponding path program 1 times [2021-06-05 22:08:24,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:08:24,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741595706] [2021-06-05 22:08:24,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:08:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:08:25,470 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 121 [2021-06-05 22:08:26,008 WARN L205 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 92 [2021-06-05 22:08:26,495 WARN L205 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 48 [2021-06-05 22:08:26,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:08:26,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:08:26,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741595706] [2021-06-05 22:08:26,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741595706] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:08:26,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:08:26,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 22:08:26,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520596308] [2021-06-05 22:08:26,589 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 22:08:26,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:08:26,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 22:08:26,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 22:08:26,606 INFO L87 Difference]: Start difference. First operand has 41 states, 39 states have (on average 2.871794871794872) internal successors, (112), 40 states have internal predecessors, (112), 0 states have call successors, (0), 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 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:26,847 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-05 22:08:26,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:08:26,883 INFO L93 Difference]: Finished difference Result 66 states and 158 transitions. [2021-06-05 22:08:26,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 22:08:26,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-06-05 22:08:26,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:08:26,895 INFO L225 Difference]: With dead ends: 66 [2021-06-05 22:08:26,895 INFO L226 Difference]: Without dead ends: 59 [2021-06-05 22:08:26,896 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 723.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 22:08:26,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-06-05 22:08:26,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 44. [2021-06-05 22:08:26,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 2.813953488372093) internal successors, (121), 43 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 121 transitions. [2021-06-05 22:08:26,958 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 121 transitions. Word has length 10 [2021-06-05 22:08:26,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:08:26,958 INFO L482 AbstractCegarLoop]: Abstraction has 44 states and 121 transitions. [2021-06-05 22:08:26,958 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:26,959 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 121 transitions. [2021-06-05 22:08:26,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-06-05 22:08:26,960 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:08:26,961 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:08:26,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 22:08:26,961 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:08:26,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:08:26,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1977673933, now seen corresponding path program 2 times [2021-06-05 22:08:26,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:08:26,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378723083] [2021-06-05 22:08:26,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:08:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:08:27,381 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 88 [2021-06-05 22:08:27,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:08:27,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:08:27,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378723083] [2021-06-05 22:08:27,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378723083] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:08:27,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:08:27,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 22:08:27,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140381977] [2021-06-05 22:08:27,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 22:08:27,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:08:27,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 22:08:27,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 22:08:27,453 INFO L87 Difference]: Start difference. First operand 44 states and 121 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:27,659 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-06-05 22:08:27,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:08:27,682 INFO L93 Difference]: Finished difference Result 66 states and 156 transitions. [2021-06-05 22:08:27,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 22:08:27,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-06-05 22:08:27,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:08:27,684 INFO L225 Difference]: With dead ends: 66 [2021-06-05 22:08:27,684 INFO L226 Difference]: Without dead ends: 59 [2021-06-05 22:08:27,685 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 507.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 22:08:27,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-06-05 22:08:27,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 46. [2021-06-05 22:08:27,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 2.8) internal successors, (126), 45 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:27,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 126 transitions. [2021-06-05 22:08:27,690 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 126 transitions. Word has length 10 [2021-06-05 22:08:27,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:08:27,691 INFO L482 AbstractCegarLoop]: Abstraction has 46 states and 126 transitions. [2021-06-05 22:08:27,691 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:27,691 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 126 transitions. [2021-06-05 22:08:27,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-06-05 22:08:27,691 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:08:27,692 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:08:27,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 22:08:27,692 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:08:27,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:08:27,692 INFO L82 PathProgramCache]: Analyzing trace with hash 911266216, now seen corresponding path program 1 times [2021-06-05 22:08:27,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:08:27,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881584979] [2021-06-05 22:08:27,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:08:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:08:27,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:08:27,706 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:08:27,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881584979] [2021-06-05 22:08:27,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881584979] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:08:27,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:08:27,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 22:08:27,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84515170] [2021-06-05 22:08:27,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 22:08:27,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:08:27,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 22:08:27,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:08:27,708 INFO L87 Difference]: Start difference. First operand 46 states and 126 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:27,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:08:27,714 INFO L93 Difference]: Finished difference Result 52 states and 141 transitions. [2021-06-05 22:08:27,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 22:08:27,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-06-05 22:08:27,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:08:27,715 INFO L225 Difference]: With dead ends: 52 [2021-06-05 22:08:27,715 INFO L226 Difference]: Without dead ends: 52 [2021-06-05 22:08:27,716 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:08:27,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-06-05 22:08:27,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-06-05 22:08:27,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.764705882352941) internal successors, (141), 51 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:27,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 141 transitions. [2021-06-05 22:08:27,721 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 141 transitions. Word has length 11 [2021-06-05 22:08:27,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:08:27,721 INFO L482 AbstractCegarLoop]: Abstraction has 52 states and 141 transitions. [2021-06-05 22:08:27,721 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:27,721 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 141 transitions. [2021-06-05 22:08:27,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-06-05 22:08:27,722 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:08:27,722 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:08:27,722 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 22:08:27,722 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:08:27,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:08:27,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1648216420, now seen corresponding path program 1 times [2021-06-05 22:08:27,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:08:27,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419107066] [2021-06-05 22:08:27,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:08:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:08:27,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:08:27,736 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:08:27,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419107066] [2021-06-05 22:08:27,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419107066] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:08:27,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:08:27,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 22:08:27,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119739123] [2021-06-05 22:08:27,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 22:08:27,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:08:27,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 22:08:27,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:08:27,738 INFO L87 Difference]: Start difference. First operand 52 states and 141 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:27,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:08:27,745 INFO L93 Difference]: Finished difference Result 58 states and 156 transitions. [2021-06-05 22:08:27,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 22:08:27,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-06-05 22:08:27,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:08:27,747 INFO L225 Difference]: With dead ends: 58 [2021-06-05 22:08:27,747 INFO L226 Difference]: Without dead ends: 58 [2021-06-05 22:08:27,747 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:08:27,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-06-05 22:08:27,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-06-05 22:08:27,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.736842105263158) internal successors, (156), 57 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:27,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 156 transitions. [2021-06-05 22:08:27,753 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 156 transitions. Word has length 11 [2021-06-05 22:08:27,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:08:27,753 INFO L482 AbstractCegarLoop]: Abstraction has 58 states and 156 transitions. [2021-06-05 22:08:27,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:27,753 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 156 transitions. [2021-06-05 22:08:27,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-06-05 22:08:27,754 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:08:27,754 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:08:27,754 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 22:08:27,754 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:08:27,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:08:27,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1504532924, now seen corresponding path program 1 times [2021-06-05 22:08:27,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:08:27,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919375740] [2021-06-05 22:08:27,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:08:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:08:27,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:08:27,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:08:27,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919375740] [2021-06-05 22:08:27,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919375740] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:08:27,768 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:08:27,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 22:08:27,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921372914] [2021-06-05 22:08:27,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 22:08:27,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:08:27,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 22:08:27,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:08:27,770 INFO L87 Difference]: Start difference. First operand 58 states and 156 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:27,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:08:27,776 INFO L93 Difference]: Finished difference Result 66 states and 175 transitions. [2021-06-05 22:08:27,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 22:08:27,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-06-05 22:08:27,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:08:27,777 INFO L225 Difference]: With dead ends: 66 [2021-06-05 22:08:27,777 INFO L226 Difference]: Without dead ends: 66 [2021-06-05 22:08:27,778 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:08:27,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-06-05 22:08:27,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-06-05 22:08:27,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 2.6923076923076925) internal successors, (175), 65 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:27,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 175 transitions. [2021-06-05 22:08:27,783 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 175 transitions. Word has length 11 [2021-06-05 22:08:27,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:08:27,783 INFO L482 AbstractCegarLoop]: Abstraction has 66 states and 175 transitions. [2021-06-05 22:08:27,783 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:27,783 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 175 transitions. [2021-06-05 22:08:27,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-06-05 22:08:27,784 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:08:27,784 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:08:27,784 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 22:08:27,784 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:08:27,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:08:27,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1535932638, now seen corresponding path program 1 times [2021-06-05 22:08:27,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:08:27,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109814417] [2021-06-05 22:08:27,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:08:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:08:27,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:08:27,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:08:27,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109814417] [2021-06-05 22:08:27,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109814417] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:08:27,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:08:27,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 22:08:27,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880915379] [2021-06-05 22:08:27,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 22:08:27,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:08:27,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 22:08:27,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:08:27,800 INFO L87 Difference]: Start difference. First operand 66 states and 175 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:27,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:08:27,805 INFO L93 Difference]: Finished difference Result 74 states and 194 transitions. [2021-06-05 22:08:27,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 22:08:27,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-06-05 22:08:27,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:08:27,806 INFO L225 Difference]: With dead ends: 74 [2021-06-05 22:08:27,806 INFO L226 Difference]: Without dead ends: 74 [2021-06-05 22:08:27,806 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:08:27,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-06-05 22:08:27,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-06-05 22:08:27,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 2.6575342465753424) internal successors, (194), 73 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:27,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 194 transitions. [2021-06-05 22:08:27,811 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 194 transitions. Word has length 11 [2021-06-05 22:08:27,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:08:27,811 INFO L482 AbstractCegarLoop]: Abstraction has 74 states and 194 transitions. [2021-06-05 22:08:27,812 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:27,812 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 194 transitions. [2021-06-05 22:08:27,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-05 22:08:27,813 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:08:27,813 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:08:27,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 22:08:27,813 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:08:27,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:08:27,813 INFO L82 PathProgramCache]: Analyzing trace with hash -375396698, now seen corresponding path program 1 times [2021-06-05 22:08:27,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:08:27,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528854654] [2021-06-05 22:08:27,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:08:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:08:27,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 22:08:27,832 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:08:27,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528854654] [2021-06-05 22:08:27,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528854654] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:08:27,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:08:27,832 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 22:08:27,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250778735] [2021-06-05 22:08:27,833 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 22:08:27,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:08:27,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 22:08:27,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:08:27,833 INFO L87 Difference]: Start difference. First operand 74 states and 194 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:27,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:08:27,853 INFO L93 Difference]: Finished difference Result 100 states and 228 transitions. [2021-06-05 22:08:27,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 22:08:27,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-06-05 22:08:27,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:08:27,854 INFO L225 Difference]: With dead ends: 100 [2021-06-05 22:08:27,854 INFO L226 Difference]: Without dead ends: 100 [2021-06-05 22:08:27,855 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:08:27,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-06-05 22:08:27,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 81. [2021-06-05 22:08:27,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 2.4625) internal successors, (197), 80 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:27,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 197 transitions. [2021-06-05 22:08:27,860 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 197 transitions. Word has length 12 [2021-06-05 22:08:27,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:08:27,860 INFO L482 AbstractCegarLoop]: Abstraction has 81 states and 197 transitions. [2021-06-05 22:08:27,860 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:27,860 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 197 transitions. [2021-06-05 22:08:27,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-05 22:08:27,861 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:08:27,861 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:08:27,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 22:08:27,861 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:08:27,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:08:27,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1248628485, now seen corresponding path program 1 times [2021-06-05 22:08:27,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:08:27,862 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965614331] [2021-06-05 22:08:27,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:08:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:08:27,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 22:08:27,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:08:27,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965614331] [2021-06-05 22:08:27,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965614331] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:08:27,900 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:08:27,900 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 22:08:27,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973462166] [2021-06-05 22:08:27,901 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 22:08:27,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:08:27,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 22:08:27,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:08:27,902 INFO L87 Difference]: Start difference. First operand 81 states and 197 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:27,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:08:27,927 INFO L93 Difference]: Finished difference Result 82 states and 165 transitions. [2021-06-05 22:08:27,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 22:08:27,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-06-05 22:08:27,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:08:27,928 INFO L225 Difference]: With dead ends: 82 [2021-06-05 22:08:27,928 INFO L226 Difference]: Without dead ends: 82 [2021-06-05 22:08:27,929 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:08:27,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-06-05 22:08:27,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 73. [2021-06-05 22:08:27,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 2.1527777777777777) internal successors, (155), 72 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:27,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 155 transitions. [2021-06-05 22:08:27,932 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 155 transitions. Word has length 12 [2021-06-05 22:08:27,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:08:27,933 INFO L482 AbstractCegarLoop]: Abstraction has 73 states and 155 transitions. [2021-06-05 22:08:27,933 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:27,933 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 155 transitions. [2021-06-05 22:08:27,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-05 22:08:27,933 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:08:27,933 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:08:27,934 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 22:08:27,934 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:08:27,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:08:27,934 INFO L82 PathProgramCache]: Analyzing trace with hash -579329596, now seen corresponding path program 1 times [2021-06-05 22:08:27,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:08:27,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752233363] [2021-06-05 22:08:27,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:08:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:08:27,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 22:08:27,959 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:08:27,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752233363] [2021-06-05 22:08:27,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752233363] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:08:27,959 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:08:27,959 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 22:08:27,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337239506] [2021-06-05 22:08:27,960 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 22:08:27,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:08:27,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 22:08:27,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:08:27,960 INFO L87 Difference]: Start difference. First operand 73 states and 155 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:27,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:08:27,973 INFO L93 Difference]: Finished difference Result 82 states and 160 transitions. [2021-06-05 22:08:27,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 22:08:27,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-06-05 22:08:27,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:08:27,974 INFO L225 Difference]: With dead ends: 82 [2021-06-05 22:08:27,974 INFO L226 Difference]: Without dead ends: 82 [2021-06-05 22:08:27,974 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:08:27,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-06-05 22:08:27,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 66. [2021-06-05 22:08:27,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 2.1384615384615384) internal successors, (139), 65 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:27,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 139 transitions. [2021-06-05 22:08:27,977 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 139 transitions. Word has length 12 [2021-06-05 22:08:27,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:08:27,977 INFO L482 AbstractCegarLoop]: Abstraction has 66 states and 139 transitions. [2021-06-05 22:08:27,978 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:27,978 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 139 transitions. [2021-06-05 22:08:27,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-05 22:08:27,978 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:08:27,978 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:08:27,978 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 22:08:27,978 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:08:27,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:08:27,979 INFO L82 PathProgramCache]: Analyzing trace with hash 339573799, now seen corresponding path program 1 times [2021-06-05 22:08:27,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:08:27,979 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302700288] [2021-06-05 22:08:27,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:08:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:08:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 22:08:28,016 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:08:28,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302700288] [2021-06-05 22:08:28,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302700288] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:08:28,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:08:28,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 22:08:28,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355112075] [2021-06-05 22:08:28,017 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 22:08:28,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:08:28,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 22:08:28,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:08:28,018 INFO L87 Difference]: Start difference. First operand 66 states and 139 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:28,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:08:28,039 INFO L93 Difference]: Finished difference Result 82 states and 155 transitions. [2021-06-05 22:08:28,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 22:08:28,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-06-05 22:08:28,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:08:28,041 INFO L225 Difference]: With dead ends: 82 [2021-06-05 22:08:28,041 INFO L226 Difference]: Without dead ends: 75 [2021-06-05 22:08:28,041 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:08:28,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-06-05 22:08:28,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 66. [2021-06-05 22:08:28,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 2.0923076923076924) internal successors, (136), 65 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:28,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 136 transitions. [2021-06-05 22:08:28,048 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 136 transitions. Word has length 12 [2021-06-05 22:08:28,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:08:28,048 INFO L482 AbstractCegarLoop]: Abstraction has 66 states and 136 transitions. [2021-06-05 22:08:28,048 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:28,048 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 136 transitions. [2021-06-05 22:08:28,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 22:08:28,048 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:08:28,048 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:08:28,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 22:08:28,049 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:08:28,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:08:28,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1848204445, now seen corresponding path program 1 times [2021-06-05 22:08:28,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:08:28,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279896382] [2021-06-05 22:08:28,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:08:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:08:28,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:08:28,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:08:28,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279896382] [2021-06-05 22:08:28,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279896382] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 22:08:28,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552179769] [2021-06-05 22:08:28,359 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 [2021-06-05 22:08:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:08:28,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 22:08:28,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 22:08:28,701 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2021-06-05 22:08:29,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:08:29,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552179769] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 22:08:29,101 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 22:08:29,101 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 22:08:29,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63859528] [2021-06-05 22:08:29,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 22:08:29,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:08:29,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 22:08:29,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-06-05 22:08:29,103 INFO L87 Difference]: Start difference. First operand 66 states and 136 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:29,258 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2021-06-05 22:08:29,482 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2021-06-05 22:08:29,683 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2021-06-05 22:08:29,976 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 40 [2021-06-05 22:08:30,217 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 22:08:30,471 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2021-06-05 22:08:30,627 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2021-06-05 22:08:30,851 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2021-06-05 22:08:31,041 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-06-05 22:08:31,185 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2021-06-05 22:08:31,408 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2021-06-05 22:08:31,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:08:31,447 INFO L93 Difference]: Finished difference Result 133 states and 272 transitions. [2021-06-05 22:08:31,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 22:08:31,448 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-06-05 22:08:31,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:08:31,448 INFO L225 Difference]: With dead ends: 133 [2021-06-05 22:08:31,448 INFO L226 Difference]: Without dead ends: 119 [2021-06-05 22:08:31,449 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2623.4ms TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2021-06-05 22:08:31,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-06-05 22:08:31,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 78. [2021-06-05 22:08:31,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 2.103896103896104) internal successors, (162), 77 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:31,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 162 transitions. [2021-06-05 22:08:31,453 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 162 transitions. Word has length 14 [2021-06-05 22:08:31,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:08:31,453 INFO L482 AbstractCegarLoop]: Abstraction has 78 states and 162 transitions. [2021-06-05 22:08:31,453 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:31,453 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 162 transitions. [2021-06-05 22:08:31,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 22:08:31,454 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:08:31,454 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:08:31,668 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-06-05 22:08:31,669 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:08:31,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:08:31,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1124293829, now seen corresponding path program 2 times [2021-06-05 22:08:31,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:08:31,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744562457] [2021-06-05 22:08:31,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:08:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:08:32,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:08:32,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:08:32,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744562457] [2021-06-05 22:08:32,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744562457] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 22:08:32,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114133470] [2021-06-05 22:08:32,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 22:08:32,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 22:08:32,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 22:08:32,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 22:08:32,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 22:08:32,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:08:32,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114133470] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 22:08:32,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 22:08:32,403 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 22:08:32,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004504654] [2021-06-05 22:08:32,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 22:08:32,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:08:32,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 22:08:32,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-06-05 22:08:32,406 INFO L87 Difference]: Start difference. First operand 78 states and 162 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:32,620 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2021-06-05 22:08:32,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:08:32,819 INFO L93 Difference]: Finished difference Result 105 states and 213 transitions. [2021-06-05 22:08:32,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 22:08:32,820 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-06-05 22:08:32,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:08:32,820 INFO L225 Difference]: With dead ends: 105 [2021-06-05 22:08:32,820 INFO L226 Difference]: Without dead ends: 98 [2021-06-05 22:08:32,821 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 697.2ms TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:08:32,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-06-05 22:08:32,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 80. [2021-06-05 22:08:32,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.1139240506329116) internal successors, (167), 79 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:32,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 167 transitions. [2021-06-05 22:08:32,824 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 167 transitions. Word has length 14 [2021-06-05 22:08:32,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:08:32,824 INFO L482 AbstractCegarLoop]: Abstraction has 80 states and 167 transitions. [2021-06-05 22:08:32,824 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:32,824 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 167 transitions. [2021-06-05 22:08:32,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 22:08:32,825 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:08:32,825 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:08:33,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-06-05 22:08:33,037 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:08:33,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:08:33,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1311401613, now seen corresponding path program 3 times [2021-06-05 22:08:33,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:08:33,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140781833] [2021-06-05 22:08:33,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:08:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:08:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:08:33,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:08:33,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140781833] [2021-06-05 22:08:33,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140781833] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 22:08:33,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819818069] [2021-06-05 22:08:33,268 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 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 [2021-06-05 22:08:33,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 22:08:33,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 22:08:33,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 22:08:33,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 22:08:33,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:08:33,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819818069] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 22:08:33,604 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 22:08:33,604 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 22:08:33,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961639307] [2021-06-05 22:08:33,606 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 22:08:33,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:08:33,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 22:08:33,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-06-05 22:08:33,607 INFO L87 Difference]: Start difference. First operand 80 states and 167 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:33,835 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2021-06-05 22:08:34,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:08:34,005 INFO L93 Difference]: Finished difference Result 108 states and 218 transitions. [2021-06-05 22:08:34,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 22:08:34,005 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-06-05 22:08:34,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:08:34,006 INFO L225 Difference]: With dead ends: 108 [2021-06-05 22:08:34,006 INFO L226 Difference]: Without dead ends: 101 [2021-06-05 22:08:34,006 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 615.6ms TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:08:34,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-06-05 22:08:34,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 79. [2021-06-05 22:08:34,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 2.1025641025641026) internal successors, (164), 78 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:34,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 164 transitions. [2021-06-05 22:08:34,009 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 164 transitions. Word has length 14 [2021-06-05 22:08:34,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:08:34,010 INFO L482 AbstractCegarLoop]: Abstraction has 79 states and 164 transitions. [2021-06-05 22:08:34,010 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:34,010 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 164 transitions. [2021-06-05 22:08:34,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 22:08:34,010 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:08:34,010 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:08:34,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-06-05 22:08:34,233 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:08:34,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:08:34,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1308775837, now seen corresponding path program 4 times [2021-06-05 22:08:34,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:08:34,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984496951] [2021-06-05 22:08:34,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:08:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:08:34,472 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2021-06-05 22:08:34,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:08:34,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:08:34,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984496951] [2021-06-05 22:08:34,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984496951] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 22:08:34,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119195115] [2021-06-05 22:08:34,553 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 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 [2021-06-05 22:08:34,597 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 22:08:34,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 22:08:34,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 22:08:34,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 22:08:34,821 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2021-06-05 22:08:34,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:08:34,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119195115] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 22:08:34,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 22:08:34,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 22:08:34,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265387378] [2021-06-05 22:08:34,987 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 22:08:34,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:08:34,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 22:08:34,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 22:08:34,988 INFO L87 Difference]: Start difference. First operand 79 states and 164 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:35,409 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2021-06-05 22:08:35,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:08:35,556 INFO L93 Difference]: Finished difference Result 120 states and 237 transitions. [2021-06-05 22:08:35,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 22:08:35,556 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-06-05 22:08:35,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:08:35,557 INFO L225 Difference]: With dead ends: 120 [2021-06-05 22:08:35,557 INFO L226 Difference]: Without dead ends: 113 [2021-06-05 22:08:35,558 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 946.0ms TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2021-06-05 22:08:35,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-06-05 22:08:35,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 80. [2021-06-05 22:08:35,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.1139240506329116) internal successors, (167), 79 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:35,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 167 transitions. [2021-06-05 22:08:35,561 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 167 transitions. Word has length 14 [2021-06-05 22:08:35,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:08:35,561 INFO L482 AbstractCegarLoop]: Abstraction has 80 states and 167 transitions. [2021-06-05 22:08:35,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:35,561 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 167 transitions. [2021-06-05 22:08:35,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 22:08:35,561 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:08:35,561 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:08:35,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 22:08:35,781 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:08:35,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:08:35,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1047840443, now seen corresponding path program 5 times [2021-06-05 22:08:35,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:08:35,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779811234] [2021-06-05 22:08:35,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:08:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:08:35,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:08:35,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:08:35,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779811234] [2021-06-05 22:08:35,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779811234] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 22:08:35,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357185928] [2021-06-05 22:08:35,976 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 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 [2021-06-05 22:08:36,020 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 22:08:36,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 22:08:36,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 22:08:36,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 22:08:36,197 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-06-05 22:08:40,115 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,117 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,128 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,129 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,137 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,137 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,152 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,153 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 22:08:40,169 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,178 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,179 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,188 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,189 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 22:08:40,198 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,206 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,207 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,214 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,214 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,223 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,224 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,232 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,233 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,240 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,241 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,248 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,249 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 22:08:40,259 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2021-06-05 22:08:40,270 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-06-05 22:08:40,280 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,288 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,289 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 22:08:40,297 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,304 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,305 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2021-06-05 22:08:40,313 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,318 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,319 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,324 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,324 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,330 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,332 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,338 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,339 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,347 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,348 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,356 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,357 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,364 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,364 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,372 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,373 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,381 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,381 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,388 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,389 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,396 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,397 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,403 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,404 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,412 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,413 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,419 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,420 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,426 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,427 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,434 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,435 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 22:08:40,445 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,451 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,451 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,457 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,457 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2021-06-05 22:08:40,464 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,470 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,471 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,477 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,478 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,485 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,485 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,492 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,493 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,499 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,500 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 22:08:40,508 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 22:08:40,517 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,523 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,523 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,529 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,530 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-06-05 22:08:40,537 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,541 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,542 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,546 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,547 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,551 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,551 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,557 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,558 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 22:08:40,565 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,569 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,570 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,576 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,576 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,581 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,582 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-06-05 22:08:40,587 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,591 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,592 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,614 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,615 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,619 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,619 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,623 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,624 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,628 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,628 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,632 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,633 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,638 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,639 INFO L550 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,644 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,645 INFO L550 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,651 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,652 INFO L550 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-06-05 22:08:40,660 INFO L550 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,665 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,666 INFO L550 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,672 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,672 INFO L550 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,677 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,678 INFO L550 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,683 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,684 INFO L550 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,690 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,690 INFO L550 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,696 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,697 INFO L550 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,702 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,718 INFO L550 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,722 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,723 INFO L550 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,726 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,727 INFO L550 ElimStorePlain]: Start of recursive call 80: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,731 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,732 INFO L550 ElimStorePlain]: Start of recursive call 81: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,735 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,736 INFO L550 ElimStorePlain]: Start of recursive call 82: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,739 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,740 INFO L550 ElimStorePlain]: Start of recursive call 83: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 22:08:40,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-06-05 22:08:40,746 INFO L550 ElimStorePlain]: Start of recursive call 84: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,750 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,750 INFO L550 ElimStorePlain]: Start of recursive call 85: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,755 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,756 INFO L550 ElimStorePlain]: Start of recursive call 86: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,759 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,760 INFO L550 ElimStorePlain]: Start of recursive call 87: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,763 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,763 INFO L550 ElimStorePlain]: Start of recursive call 88: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,767 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,767 INFO L550 ElimStorePlain]: Start of recursive call 89: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,770 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,771 INFO L550 ElimStorePlain]: Start of recursive call 90: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,885 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2021-06-05 22:08:40,886 INFO L628 ElimStorePlain]: treesize reduction 34, result has 77.5 percent of original size [2021-06-05 22:08:40,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-06-05 22:08:40,890 INFO L550 ElimStorePlain]: Start of recursive call 91: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,893 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 22:08:40,893 INFO L550 ElimStorePlain]: Start of recursive call 92: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 22:08:40,898 INFO L550 ElimStorePlain]: Start of recursive call 93: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-05 22:08:40,902 INFO L550 ElimStorePlain]: Start of recursive call 94: End of recursive call: and 1 xjuncts. [2021-06-05 22:08:40,931 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 22:08:40,935 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 22:08:40,935 INFO L247 ElimStorePlain]: Needed 94 recursive calls to eliminate 3 variables, input treesize:4678, output treesize:38 [2021-06-05 22:08:40,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:08:40,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357185928] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 22:08:40,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 22:08:40,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 22:08:40,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041640476] [2021-06-05 22:08:40,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 22:08:40,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:08:40,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 22:08:40,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-06-05 22:08:40,999 INFO L87 Difference]: Start difference. First operand 80 states and 167 transitions. Second operand has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 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) [2021-06-05 22:08:41,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:08:41,195 INFO L93 Difference]: Finished difference Result 93 states and 184 transitions. [2021-06-05 22:08:41,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 22:08:41,195 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 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 14 [2021-06-05 22:08:41,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:08:41,196 INFO L225 Difference]: With dead ends: 93 [2021-06-05 22:08:41,196 INFO L226 Difference]: Without dead ends: 82 [2021-06-05 22:08:41,196 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 510.9ms TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-06-05 22:08:41,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-06-05 22:08:41,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2021-06-05 22:08:41,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.1012658227848102) internal successors, (166), 79 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:08:41,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 166 transitions. [2021-06-05 22:08:41,199 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 166 transitions. Word has length 14 [2021-06-05 22:08:41,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:08:41,199 INFO L482 AbstractCegarLoop]: Abstraction has 80 states and 166 transitions. [2021-06-05 22:08:41,199 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 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) [2021-06-05 22:08:41,199 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 166 transitions. [2021-06-05 22:08:41,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 22:08:41,199 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:08:41,200 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:08:41,405 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-06-05 22:08:41,405 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:08:41,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:08:41,406 INFO L82 PathProgramCache]: Analyzing trace with hash 685771365, now seen corresponding path program 1 times [2021-06-05 22:08:41,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:08:41,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420024570] [2021-06-05 22:08:41,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:08:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:08:41,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:08:41,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:08:41,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420024570] [2021-06-05 22:08:41,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420024570] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 22:08:41,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502528992] [2021-06-05 22:08:41,696 INFO L95 rtionOrderModulation]: Keeping assertion order 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 [2021-06-05 22:08:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:08:41,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 22:08:41,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 22:08:42,002 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown