/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-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 15:49:09,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 15:49:09,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 15:49:09,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 15:49:09,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 15:49:09,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 15:49:09,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 15:49:09,230 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-Separate.epf [2022-01-18 15:49:09,260 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 15:49:09,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 15:49:09,260 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 15:49:09,260 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 15:49:09,261 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 15:49:09,261 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 15:49:09,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 15:49:09,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 15:49:09,262 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 15:49:09,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 15:49:09,262 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 15:49:09,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 15:49:09,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 15:49:09,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 15:49:09,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 15:49:09,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 15:49:09,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 15:49:09,263 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 15:49:09,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 15:49:09,263 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 15:49:09,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 15:49:09,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 15:49:09,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 15:49:09,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 15:49:09,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 15:49:09,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 15:49:09,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 15:49:09,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 15:49:09,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 15:49:09,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 15:49:09,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 15:49:09,265 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 15:49:09,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 15:49:09,265 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 15:49:09,265 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 15:49:09,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 15:49:09,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 15:49:09,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 15:49:09,492 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 15:49:09,495 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 15:49:09,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl [2022-01-18 15:49:09,497 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl' [2022-01-18 15:49:09,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 15:49:09,519 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 15:49:09,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 15:49:09,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 15:49:09,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 15:49:09,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:49:09" (1/1) ... [2022-01-18 15:49:09,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:49:09" (1/1) ... [2022-01-18 15:49:09,549 INFO L137 Inliner]: procedures = 7, calls = 6, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 15:49:09,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 15:49:09,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 15:49:09,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 15:49:09,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 15:49:09,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:49:09" (1/1) ... [2022-01-18 15:49:09,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:49:09" (1/1) ... [2022-01-18 15:49:09,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:49:09" (1/1) ... [2022-01-18 15:49:09,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:49:09" (1/1) ... [2022-01-18 15:49:09,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:49:09" (1/1) ... [2022-01-18 15:49:09,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:49:09" (1/1) ... [2022-01-18 15:49:09,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:49:09" (1/1) ... [2022-01-18 15:49:09,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 15:49:09,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 15:49:09,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 15:49:09,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 15:49:09,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:49:09" (1/1) ... [2022-01-18 15:49:09,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 15:49:09,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:49:09,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 15:49:09,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 15:49:09,634 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-18 15:49:09,635 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 15:49:09,635 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 15:49:09,635 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-18 15:49:09,635 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 15:49:09,635 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 15:49:09,635 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 15:49:09,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 15:49:09,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 15:49:09,636 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-01-18 15:49:09,637 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-18 15:49:09,637 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-18 15:49:09,638 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2022-01-18 15:49:09,638 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-01-18 15:49:09,638 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-01-18 15:49:09,639 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2022-01-18 15:49:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-01-18 15:49:09,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-01-18 15:49:09,641 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2022-01-18 15:49:09,642 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-01-18 15:49:09,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-01-18 15:49:09,643 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 15:49:09,688 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 15:49:09,689 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 15:49:09,794 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 15:49:09,809 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 15:49:09,809 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 15:49:09,811 INFO L202 PluginConnector]: Adding new model ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:49:09 BoogieIcfgContainer [2022-01-18 15:49:09,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 15:49:09,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 15:49:09,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 15:49:09,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 15:49:09,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:49:09" (1/2) ... [2022-01-18 15:49:09,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f71fe0 and model type ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 03:49:09, skipping insertion in model container [2022-01-18 15:49:09,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:49:09" (2/2) ... [2022-01-18 15:49:09,832 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-6.wvr.bpl [2022-01-18 15:49:09,835 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 15:49:09,836 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 15:49:09,836 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 15:49:09,836 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 15:49:09,902 INFO L148 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-01-18 15:49:09,959 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 15:49:09,964 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 15:49:09,964 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-01-18 15:49:09,972 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 54 transitions, 156 flow [2022-01-18 15:49:12,706 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 74652 states, 74651 states have (on average 5.020776680821422) internal successors, (374806), 74651 states have internal predecessors, (374806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:49:12,842 INFO L276 IsEmpty]: Start isEmpty. Operand has 74652 states, 74651 states have (on average 5.020776680821422) internal successors, (374806), 74651 states have internal predecessors, (374806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:49:13,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:49:13,427 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:49:13,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:49:13,428 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:49:13,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:49:13,437 INFO L85 PathProgramCache]: Analyzing trace with hash 450303750, now seen corresponding path program 1 times [2022-01-18 15:49:13,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:49:13,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805479087] [2022-01-18 15:49:13,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:49:13,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:49:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:49:13,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:49:13,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:49:13,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805479087] [2022-01-18 15:49:13,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805479087] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:49:13,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:49:13,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:49:13,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136484610] [2022-01-18 15:49:13,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:49:13,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 15:49:13,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:49:13,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 15:49:13,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-18 15:49:13,808 INFO L87 Difference]: Start difference. First operand has 74652 states, 74651 states have (on average 5.020776680821422) internal successors, (374806), 74651 states have internal predecessors, (374806), 0 states have call successors, (0), 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 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:49:17,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:49:17,242 INFO L93 Difference]: Finished difference Result 201088 states and 980337 transitions. [2022-01-18 15:49:17,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 15:49:17,244 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:49:17,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:49:18,953 INFO L225 Difference]: With dead ends: 201088 [2022-01-18 15:49:18,953 INFO L226 Difference]: Without dead ends: 201088 [2022-01-18 15:49:18,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:49:18,958 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 87 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:49:18,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 124 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 15:49:19,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201088 states. [2022-01-18 15:49:24,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201088 to 100373. [2022-01-18 15:49:25,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100373 states, 100372 states have (on average 4.930000398517515) internal successors, (494834), 100372 states have internal predecessors, (494834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:49:26,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100373 states to 100373 states and 494834 transitions. [2022-01-18 15:49:26,528 INFO L78 Accepts]: Start accepts. Automaton has 100373 states and 494834 transitions. Word has length 46 [2022-01-18 15:49:26,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:49:26,528 INFO L470 AbstractCegarLoop]: Abstraction has 100373 states and 494834 transitions. [2022-01-18 15:49:26,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:49:26,528 INFO L276 IsEmpty]: Start isEmpty. Operand 100373 states and 494834 transitions. [2022-01-18 15:49:27,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:49:27,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:49:27,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:49:27,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 15:49:27,003 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:49:27,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:49:27,004 INFO L85 PathProgramCache]: Analyzing trace with hash 717350054, now seen corresponding path program 2 times [2022-01-18 15:49:27,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:49:27,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500237620] [2022-01-18 15:49:27,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:49:27,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:49:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:49:27,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:49:27,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:49:27,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500237620] [2022-01-18 15:49:27,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500237620] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:49:27,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:49:27,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 15:49:27,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109980701] [2022-01-18 15:49:27,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:49:27,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 15:49:27,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:49:27,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 15:49:27,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:49:27,101 INFO L87 Difference]: Start difference. First operand 100373 states and 494834 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:49:30,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:49:30,098 INFO L93 Difference]: Finished difference Result 237543 states and 1143295 transitions. [2022-01-18 15:49:30,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 15:49:30,099 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:49:30,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:49:32,214 INFO L225 Difference]: With dead ends: 237543 [2022-01-18 15:49:32,215 INFO L226 Difference]: Without dead ends: 237543 [2022-01-18 15:49:32,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:49:32,217 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 128 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:49:32,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 172 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 15:49:32,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237543 states. [2022-01-18 15:49:37,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237543 to 124242. [2022-01-18 15:49:37,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124242 states, 124241 states have (on average 4.865503336257757) internal successors, (604495), 124241 states have internal predecessors, (604495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:49:39,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124242 states to 124242 states and 604495 transitions. [2022-01-18 15:49:39,387 INFO L78 Accepts]: Start accepts. Automaton has 124242 states and 604495 transitions. Word has length 46 [2022-01-18 15:49:39,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:49:39,388 INFO L470 AbstractCegarLoop]: Abstraction has 124242 states and 604495 transitions. [2022-01-18 15:49:39,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:49:39,389 INFO L276 IsEmpty]: Start isEmpty. Operand 124242 states and 604495 transitions. [2022-01-18 15:49:39,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:49:39,768 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:49:39,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:49:39,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 15:49:39,769 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:49:39,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:49:39,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1706198856, now seen corresponding path program 3 times [2022-01-18 15:49:39,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:49:39,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215821303] [2022-01-18 15:49:39,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:49:39,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:49:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:49:39,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:49:39,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:49:39,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215821303] [2022-01-18 15:49:39,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215821303] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:49:39,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:49:39,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 15:49:39,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635510503] [2022-01-18 15:49:39,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:49:39,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:49:39,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:49:39,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:49:39,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:49:39,876 INFO L87 Difference]: Start difference. First operand 124242 states and 604495 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:49:42,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:49:42,813 INFO L93 Difference]: Finished difference Result 232977 states and 1116666 transitions. [2022-01-18 15:49:42,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:49:42,820 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:49:42,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:49:45,053 INFO L225 Difference]: With dead ends: 232977 [2022-01-18 15:49:45,053 INFO L226 Difference]: Without dead ends: 232977 [2022-01-18 15:49:45,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-18 15:49:45,055 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 151 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:49:45,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 232 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 15:49:45,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232977 states. [2022-01-18 15:49:50,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232977 to 140760. [2022-01-18 15:49:51,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140760 states, 140759 states have (on average 4.84867752683665) internal successors, (682495), 140759 states have internal predecessors, (682495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:49:52,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140760 states to 140760 states and 682495 transitions. [2022-01-18 15:49:52,686 INFO L78 Accepts]: Start accepts. Automaton has 140760 states and 682495 transitions. Word has length 46 [2022-01-18 15:49:52,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:49:52,686 INFO L470 AbstractCegarLoop]: Abstraction has 140760 states and 682495 transitions. [2022-01-18 15:49:52,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:49:52,686 INFO L276 IsEmpty]: Start isEmpty. Operand 140760 states and 682495 transitions. [2022-01-18 15:49:53,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:49:53,948 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:49:53,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:49:53,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 15:49:53,966 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:49:53,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:49:53,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1401464350, now seen corresponding path program 4 times [2022-01-18 15:49:53,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:49:53,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633074226] [2022-01-18 15:49:53,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:49:53,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:49:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:49:54,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:49:54,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:49:54,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633074226] [2022-01-18 15:49:54,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633074226] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:49:54,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:49:54,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:49:54,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346818748] [2022-01-18 15:49:54,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:49:54,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 15:49:54,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:49:54,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 15:49:54,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-01-18 15:49:54,066 INFO L87 Difference]: Start difference. First operand 140760 states and 682495 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:49:56,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:49:56,310 INFO L93 Difference]: Finished difference Result 207060 states and 995129 transitions. [2022-01-18 15:49:56,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 15:49:56,311 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:49:56,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:49:58,215 INFO L225 Difference]: With dead ends: 207060 [2022-01-18 15:49:58,216 INFO L226 Difference]: Without dead ends: 207060 [2022-01-18 15:49:58,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 15:49:58,217 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 170 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:49:58,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 288 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 15:49:58,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207060 states. [2022-01-18 15:50:03,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207060 to 146091. [2022-01-18 15:50:03,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146091 states, 146090 states have (on average 4.832856458347594) internal successors, (706032), 146090 states have internal predecessors, (706032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:50:05,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146091 states to 146091 states and 706032 transitions. [2022-01-18 15:50:05,202 INFO L78 Accepts]: Start accepts. Automaton has 146091 states and 706032 transitions. Word has length 46 [2022-01-18 15:50:05,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:50:05,202 INFO L470 AbstractCegarLoop]: Abstraction has 146091 states and 706032 transitions. [2022-01-18 15:50:05,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:50:05,203 INFO L276 IsEmpty]: Start isEmpty. Operand 146091 states and 706032 transitions. [2022-01-18 15:50:05,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:50:05,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:50:05,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:50:05,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 15:50:05,661 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:50:05,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:50:05,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1511901302, now seen corresponding path program 5 times [2022-01-18 15:50:05,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:50:05,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619543493] [2022-01-18 15:50:05,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:50:05,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:50:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:50:05,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:50:05,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:50:05,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619543493] [2022-01-18 15:50:05,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619543493] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:50:05,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:50:05,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 15:50:05,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185475394] [2022-01-18 15:50:05,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:50:05,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:50:05,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:50:05,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:50:05,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:50:05,744 INFO L87 Difference]: Start difference. First operand 146091 states and 706032 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:50:09,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:50:09,180 INFO L93 Difference]: Finished difference Result 271147 states and 1272171 transitions. [2022-01-18 15:50:09,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 15:50:09,180 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:50:09,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:50:11,488 INFO L225 Difference]: With dead ends: 271147 [2022-01-18 15:50:11,488 INFO L226 Difference]: Without dead ends: 271147 [2022-01-18 15:50:11,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:50:11,489 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 163 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:50:11,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 231 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 15:50:11,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271147 states. [2022-01-18 15:50:18,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271147 to 164447. [2022-01-18 15:50:18,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164447 states, 164446 states have (on average 4.712294613429332) internal successors, (774918), 164446 states have internal predecessors, (774918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:50:20,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164447 states to 164447 states and 774918 transitions. [2022-01-18 15:50:20,331 INFO L78 Accepts]: Start accepts. Automaton has 164447 states and 774918 transitions. Word has length 46 [2022-01-18 15:50:20,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:50:20,331 INFO L470 AbstractCegarLoop]: Abstraction has 164447 states and 774918 transitions. [2022-01-18 15:50:20,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:50:20,332 INFO L276 IsEmpty]: Start isEmpty. Operand 164447 states and 774918 transitions. [2022-01-18 15:50:21,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:50:21,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:50:21,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:50:21,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 15:50:21,480 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:50:21,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:50:21,486 INFO L85 PathProgramCache]: Analyzing trace with hash -388722550, now seen corresponding path program 6 times [2022-01-18 15:50:21,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:50:21,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990086679] [2022-01-18 15:50:21,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:50:21,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:50:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:50:21,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:50:21,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:50:21,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990086679] [2022-01-18 15:50:21,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990086679] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:50:21,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:50:21,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:50:21,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919896511] [2022-01-18 15:50:21,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:50:21,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 15:50:21,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:50:21,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 15:50:21,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-18 15:50:21,627 INFO L87 Difference]: Start difference. First operand 164447 states and 774918 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:50:25,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:50:25,978 INFO L93 Difference]: Finished difference Result 281393 states and 1303094 transitions. [2022-01-18 15:50:25,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 15:50:25,979 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:50:25,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:50:27,664 INFO L225 Difference]: With dead ends: 281393 [2022-01-18 15:50:27,664 INFO L226 Difference]: Without dead ends: 281393 [2022-01-18 15:50:27,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:50:27,666 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 163 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 15:50:27,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 291 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 15:50:28,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281393 states. [2022-01-18 15:50:35,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281393 to 185569. [2022-01-18 15:50:35,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185569 states, 185568 states have (on average 4.64495494912916) internal successors, (861955), 185568 states have internal predecessors, (861955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:50:37,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185569 states to 185569 states and 861955 transitions. [2022-01-18 15:50:37,638 INFO L78 Accepts]: Start accepts. Automaton has 185569 states and 861955 transitions. Word has length 46 [2022-01-18 15:50:37,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:50:37,639 INFO L470 AbstractCegarLoop]: Abstraction has 185569 states and 861955 transitions. [2022-01-18 15:50:37,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:50:37,639 INFO L276 IsEmpty]: Start isEmpty. Operand 185569 states and 861955 transitions. [2022-01-18 15:50:38,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:50:38,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:50:38,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:50:38,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 15:50:38,213 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:50:38,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:50:38,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1086431228, now seen corresponding path program 7 times [2022-01-18 15:50:38,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:50:38,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382756300] [2022-01-18 15:50:38,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:50:38,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:50:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:50:38,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:50:38,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:50:38,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382756300] [2022-01-18 15:50:38,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382756300] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:50:38,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:50:38,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:50:38,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548136250] [2022-01-18 15:50:38,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:50:38,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 15:50:38,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:50:38,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 15:50:38,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-18 15:50:38,300 INFO L87 Difference]: Start difference. First operand 185569 states and 861955 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:50:41,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:50:41,438 INFO L93 Difference]: Finished difference Result 292927 states and 1358658 transitions. [2022-01-18 15:50:41,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:50:41,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:50:41,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:50:43,437 INFO L225 Difference]: With dead ends: 292927 [2022-01-18 15:50:43,437 INFO L226 Difference]: Without dead ends: 196405 [2022-01-18 15:50:43,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-18 15:50:43,438 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 95 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:50:43,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 82 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:50:43,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196405 states. [2022-01-18 15:50:48,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196405 to 196405. [2022-01-18 15:50:49,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196405 states, 196404 states have (on average 4.545100914441661) internal successors, (892676), 196404 states have internal predecessors, (892676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:50:51,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196405 states to 196405 states and 892676 transitions. [2022-01-18 15:50:51,001 INFO L78 Accepts]: Start accepts. Automaton has 196405 states and 892676 transitions. Word has length 46 [2022-01-18 15:50:51,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:50:51,001 INFO L470 AbstractCegarLoop]: Abstraction has 196405 states and 892676 transitions. [2022-01-18 15:50:51,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:50:51,002 INFO L276 IsEmpty]: Start isEmpty. Operand 196405 states and 892676 transitions. [2022-01-18 15:50:52,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:50:52,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:50:52,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:50:52,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 15:50:52,327 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:50:52,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:50:52,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1313539938, now seen corresponding path program 8 times [2022-01-18 15:50:52,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:50:52,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608255846] [2022-01-18 15:50:52,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:50:52,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:50:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:50:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:50:52,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:50:52,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608255846] [2022-01-18 15:50:52,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608255846] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:50:52,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:50:52,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 15:50:52,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226205677] [2022-01-18 15:50:52,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:50:52,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:50:52,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:50:52,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:50:52,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:50:52,399 INFO L87 Difference]: Start difference. First operand 196405 states and 892676 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:50:55,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:50:55,951 INFO L93 Difference]: Finished difference Result 311447 states and 1399231 transitions. [2022-01-18 15:50:55,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:50:55,952 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:50:55,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:50:57,835 INFO L225 Difference]: With dead ends: 311447 [2022-01-18 15:50:57,836 INFO L226 Difference]: Without dead ends: 311255 [2022-01-18 15:50:57,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-18 15:50:57,836 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 152 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:50:57,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 241 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 15:50:59,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311255 states. [2022-01-18 15:51:06,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311255 to 207417. [2022-01-18 15:51:06,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207417 states, 207416 states have (on average 4.523006903999692) internal successors, (938144), 207416 states have internal predecessors, (938144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:51:08,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207417 states to 207417 states and 938144 transitions. [2022-01-18 15:51:08,474 INFO L78 Accepts]: Start accepts. Automaton has 207417 states and 938144 transitions. Word has length 46 [2022-01-18 15:51:08,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:51:08,474 INFO L470 AbstractCegarLoop]: Abstraction has 207417 states and 938144 transitions. [2022-01-18 15:51:08,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:51:08,474 INFO L276 IsEmpty]: Start isEmpty. Operand 207417 states and 938144 transitions. [2022-01-18 15:51:09,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:51:09,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:51:09,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:51:09,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 15:51:09,882 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:51:09,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:51:09,883 INFO L85 PathProgramCache]: Analyzing trace with hash -196650254, now seen corresponding path program 9 times [2022-01-18 15:51:09,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:51:09,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249332728] [2022-01-18 15:51:09,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:51:09,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:51:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:51:09,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:51:09,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:51:09,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249332728] [2022-01-18 15:51:09,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249332728] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:51:09,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:51:09,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 15:51:09,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40563621] [2022-01-18 15:51:09,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:51:09,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 15:51:09,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:51:09,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 15:51:09,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:51:09,931 INFO L87 Difference]: Start difference. First operand 207417 states and 938144 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:51:14,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:51:14,318 INFO L93 Difference]: Finished difference Result 334168 states and 1492333 transitions. [2022-01-18 15:51:14,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 15:51:14,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:51:14,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:51:17,840 INFO L225 Difference]: With dead ends: 334168 [2022-01-18 15:51:17,840 INFO L226 Difference]: Without dead ends: 333766 [2022-01-18 15:51:17,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:51:17,841 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 126 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:51:17,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 177 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 15:51:19,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333766 states. [2022-01-18 15:51:27,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333766 to 214179. [2022-01-18 15:51:27,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214179 states, 214178 states have (on average 4.497025838321396) internal successors, (963164), 214178 states have internal predecessors, (963164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:51:29,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214179 states to 214179 states and 963164 transitions. [2022-01-18 15:51:29,304 INFO L78 Accepts]: Start accepts. Automaton has 214179 states and 963164 transitions. Word has length 46 [2022-01-18 15:51:29,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:51:29,305 INFO L470 AbstractCegarLoop]: Abstraction has 214179 states and 963164 transitions. [2022-01-18 15:51:29,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:51:29,305 INFO L276 IsEmpty]: Start isEmpty. Operand 214179 states and 963164 transitions. [2022-01-18 15:51:30,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:51:30,769 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:51:30,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:51:30,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 15:51:30,769 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:51:30,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:51:30,769 INFO L85 PathProgramCache]: Analyzing trace with hash 565777960, now seen corresponding path program 10 times [2022-01-18 15:51:30,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:51:30,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144778502] [2022-01-18 15:51:30,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:51:30,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:51:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:51:30,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:51:30,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:51:30,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144778502] [2022-01-18 15:51:30,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144778502] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:51:30,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:51:30,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:51:30,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608838739] [2022-01-18 15:51:30,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:51:30,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 15:51:30,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:51:30,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 15:51:30,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-18 15:51:30,835 INFO L87 Difference]: Start difference. First operand 214179 states and 963164 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:51:34,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:51:34,617 INFO L93 Difference]: Finished difference Result 354188 states and 1551857 transitions. [2022-01-18 15:51:34,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 15:51:34,618 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:51:34,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:51:37,418 INFO L225 Difference]: With dead ends: 354188 [2022-01-18 15:51:37,419 INFO L226 Difference]: Without dead ends: 353624 [2022-01-18 15:51:37,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:51:37,419 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 200 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:51:37,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 259 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 15:51:38,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353624 states. [2022-01-18 15:51:46,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353624 to 224674. [2022-01-18 15:51:47,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224674 states, 224673 states have (on average 4.434026340503754) internal successors, (996206), 224673 states have internal predecessors, (996206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:51:48,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224674 states to 224674 states and 996206 transitions. [2022-01-18 15:51:48,971 INFO L78 Accepts]: Start accepts. Automaton has 224674 states and 996206 transitions. Word has length 46 [2022-01-18 15:51:48,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:51:48,971 INFO L470 AbstractCegarLoop]: Abstraction has 224674 states and 996206 transitions. [2022-01-18 15:51:48,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:51:48,972 INFO L276 IsEmpty]: Start isEmpty. Operand 224674 states and 996206 transitions. [2022-01-18 15:51:50,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:51:50,271 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:51:50,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:51:50,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 15:51:50,271 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:51:50,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:51:50,271 INFO L85 PathProgramCache]: Analyzing trace with hash 625190246, now seen corresponding path program 11 times [2022-01-18 15:51:50,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:51:50,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809283104] [2022-01-18 15:51:50,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:51:50,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:51:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:51:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:51:50,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:51:50,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809283104] [2022-01-18 15:51:50,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809283104] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:51:50,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:51:50,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:51:50,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210593941] [2022-01-18 15:51:50,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:51:50,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 15:51:50,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:51:50,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 15:51:50,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-01-18 15:51:50,328 INFO L87 Difference]: Start difference. First operand 224674 states and 996206 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:51:54,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:51:54,008 INFO L93 Difference]: Finished difference Result 313135 states and 1375062 transitions. [2022-01-18 15:51:54,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 15:51:54,009 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:51:54,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:51:55,866 INFO L225 Difference]: With dead ends: 313135 [2022-01-18 15:51:55,866 INFO L226 Difference]: Without dead ends: 313027 [2022-01-18 15:51:55,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 15:51:55,867 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 188 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:51:55,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 292 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 15:51:57,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313027 states. [2022-01-18 15:52:04,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313027 to 222693. [2022-01-18 15:52:05,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222693 states, 222692 states have (on average 4.4333384225746775) internal successors, (987269), 222692 states have internal predecessors, (987269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:52:07,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222693 states to 222693 states and 987269 transitions. [2022-01-18 15:52:07,495 INFO L78 Accepts]: Start accepts. Automaton has 222693 states and 987269 transitions. Word has length 46 [2022-01-18 15:52:07,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:52:07,495 INFO L470 AbstractCegarLoop]: Abstraction has 222693 states and 987269 transitions. [2022-01-18 15:52:07,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:52:07,496 INFO L276 IsEmpty]: Start isEmpty. Operand 222693 states and 987269 transitions. [2022-01-18 15:52:08,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:52:08,784 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:52:08,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:52:08,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 15:52:08,785 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:52:08,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:52:08,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1961930376, now seen corresponding path program 12 times [2022-01-18 15:52:08,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:52:08,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284748669] [2022-01-18 15:52:08,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:52:08,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:52:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:52:08,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:52:08,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:52:08,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284748669] [2022-01-18 15:52:08,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284748669] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:52:08,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:52:08,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-18 15:52:08,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023898428] [2022-01-18 15:52:08,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:52:08,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 15:52:08,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:52:08,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 15:52:08,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-18 15:52:08,920 INFO L87 Difference]: Start difference. First operand 222693 states and 987269 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:52:13,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:52:13,489 INFO L93 Difference]: Finished difference Result 317016 states and 1385687 transitions. [2022-01-18 15:52:13,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 15:52:13,490 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:52:13,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:52:17,635 INFO L225 Difference]: With dead ends: 317016 [2022-01-18 15:52:17,636 INFO L226 Difference]: Without dead ends: 316890 [2022-01-18 15:52:17,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-01-18 15:52:17,636 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 207 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 15:52:17,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 316 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 15:52:18,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316890 states. [2022-01-18 15:52:27,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316890 to 230772. [2022-01-18 15:52:27,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230772 states, 230771 states have (on average 4.403451906868714) internal successors, (1016189), 230771 states have internal predecessors, (1016189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:52:29,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230772 states to 230772 states and 1016189 transitions. [2022-01-18 15:52:29,331 INFO L78 Accepts]: Start accepts. Automaton has 230772 states and 1016189 transitions. Word has length 46 [2022-01-18 15:52:29,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:52:29,331 INFO L470 AbstractCegarLoop]: Abstraction has 230772 states and 1016189 transitions. [2022-01-18 15:52:29,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:52:29,331 INFO L276 IsEmpty]: Start isEmpty. Operand 230772 states and 1016189 transitions. [2022-01-18 15:52:30,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:52:30,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:52:30,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:52:30,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-18 15:52:30,078 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:52:30,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:52:30,078 INFO L85 PathProgramCache]: Analyzing trace with hash 316967760, now seen corresponding path program 13 times [2022-01-18 15:52:30,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:52:30,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446105] [2022-01-18 15:52:30,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:52:30,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:52:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:52:30,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:52:30,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:52:30,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446105] [2022-01-18 15:52:30,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:52:30,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:52:30,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:52:30,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42204410] [2022-01-18 15:52:30,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:52:30,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 15:52:30,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:52:30,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 15:52:30,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-18 15:52:30,136 INFO L87 Difference]: Start difference. First operand 230772 states and 1016189 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:52:34,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:52:34,709 INFO L93 Difference]: Finished difference Result 408478 states and 1765876 transitions. [2022-01-18 15:52:34,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 15:52:34,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:52:34,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:52:38,002 INFO L225 Difference]: With dead ends: 408478 [2022-01-18 15:52:38,002 INFO L226 Difference]: Without dead ends: 407788 [2022-01-18 15:52:38,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:52:38,003 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 80 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:52:38,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 116 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:52:38,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407788 states. [2022-01-18 15:52:47,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407788 to 229608. [2022-01-18 15:52:48,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229608 states, 229607 states have (on average 4.399726489174982) internal successors, (1010208), 229607 states have internal predecessors, (1010208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:52:50,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229608 states to 229608 states and 1010208 transitions. [2022-01-18 15:52:50,611 INFO L78 Accepts]: Start accepts. Automaton has 229608 states and 1010208 transitions. Word has length 46 [2022-01-18 15:52:50,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:52:50,611 INFO L470 AbstractCegarLoop]: Abstraction has 229608 states and 1010208 transitions. [2022-01-18 15:52:50,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:52:50,611 INFO L276 IsEmpty]: Start isEmpty. Operand 229608 states and 1010208 transitions. [2022-01-18 15:52:51,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:52:51,856 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:52:51,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:52:51,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-18 15:52:51,857 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:52:51,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:52:51,858 INFO L85 PathProgramCache]: Analyzing trace with hash 256407430, now seen corresponding path program 14 times [2022-01-18 15:52:51,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:52:51,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032903931] [2022-01-18 15:52:51,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:52:51,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:52:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:52:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:52:51,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:52:51,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032903931] [2022-01-18 15:52:51,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032903931] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:52:51,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:52:51,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:52:51,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359887284] [2022-01-18 15:52:51,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:52:51,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 15:52:51,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:52:51,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 15:52:51,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-18 15:52:51,948 INFO L87 Difference]: Start difference. First operand 229608 states and 1010208 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:52:58,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:52:58,172 INFO L93 Difference]: Finished difference Result 402139 states and 1737491 transitions. [2022-01-18 15:52:58,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 15:52:58,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:52:58,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:53:03,710 INFO L225 Difference]: With dead ends: 402139 [2022-01-18 15:53:03,710 INFO L226 Difference]: Without dead ends: 401305 [2022-01-18 15:53:03,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:53:03,711 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 82 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:53:03,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 116 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 15:53:04,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401305 states. [2022-01-18 15:53:13,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401305 to 225477. [2022-01-18 15:53:13,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225477 states, 225476 states have (on average 4.391088186769323) internal successors, (990085), 225476 states have internal predecessors, (990085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:53:15,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225477 states to 225477 states and 990085 transitions. [2022-01-18 15:53:15,720 INFO L78 Accepts]: Start accepts. Automaton has 225477 states and 990085 transitions. Word has length 46 [2022-01-18 15:53:15,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:53:15,721 INFO L470 AbstractCegarLoop]: Abstraction has 225477 states and 990085 transitions. [2022-01-18 15:53:15,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:53:15,721 INFO L276 IsEmpty]: Start isEmpty. Operand 225477 states and 990085 transitions. [2022-01-18 15:53:16,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:53:16,479 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:53:16,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:53:16,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-18 15:53:16,479 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:53:16,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:53:16,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1603349792, now seen corresponding path program 15 times [2022-01-18 15:53:16,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:53:16,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885282840] [2022-01-18 15:53:16,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:53:16,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:53:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:53:16,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:53:16,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:53:16,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885282840] [2022-01-18 15:53:16,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885282840] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:53:16,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:53:16,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:53:16,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726955004] [2022-01-18 15:53:16,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:53:16,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 15:53:16,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:53:16,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 15:53:16,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-18 15:53:16,529 INFO L87 Difference]: Start difference. First operand 225477 states and 990085 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:53:19,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:53:19,780 INFO L93 Difference]: Finished difference Result 357749 states and 1533942 transitions. [2022-01-18 15:53:19,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 15:53:19,781 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:53:19,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:53:22,654 INFO L225 Difference]: With dead ends: 357749 [2022-01-18 15:53:22,654 INFO L226 Difference]: Without dead ends: 357005 [2022-01-18 15:53:22,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:53:22,655 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 74 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:53:22,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 112 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:53:24,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357005 states. [2022-01-18 15:53:32,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357005 to 221600. [2022-01-18 15:53:32,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221600 states, 221599 states have (on average 4.303606965735405) internal successors, (953675), 221599 states have internal predecessors, (953675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:53:35,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221600 states to 221600 states and 953675 transitions. [2022-01-18 15:53:35,080 INFO L78 Accepts]: Start accepts. Automaton has 221600 states and 953675 transitions. Word has length 46 [2022-01-18 15:53:35,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:53:35,081 INFO L470 AbstractCegarLoop]: Abstraction has 221600 states and 953675 transitions. [2022-01-18 15:53:35,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:53:35,082 INFO L276 IsEmpty]: Start isEmpty. Operand 221600 states and 953675 transitions. [2022-01-18 15:53:36,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:53:36,287 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:53:36,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:53:36,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-18 15:53:36,288 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:53:36,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:53:36,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1827995230, now seen corresponding path program 16 times [2022-01-18 15:53:36,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:53:36,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765947432] [2022-01-18 15:53:36,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:53:36,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:53:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:53:36,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:53:36,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:53:36,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765947432] [2022-01-18 15:53:36,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765947432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:53:36,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:53:36,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 15:53:36,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113836990] [2022-01-18 15:53:36,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:53:36,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 15:53:36,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:53:36,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 15:53:36,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:53:36,397 INFO L87 Difference]: Start difference. First operand 221600 states and 953675 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:53:40,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:53:40,647 INFO L93 Difference]: Finished difference Result 340498 states and 1448814 transitions. [2022-01-18 15:53:40,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 15:53:40,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:53:40,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:53:44,413 INFO L225 Difference]: With dead ends: 340498 [2022-01-18 15:53:44,413 INFO L226 Difference]: Without dead ends: 339658 [2022-01-18 15:53:44,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:53:44,414 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 109 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 15:53:44,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 168 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 15:53:44,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339658 states. [2022-01-18 15:53:53,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339658 to 224124. [2022-01-18 15:53:53,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224124 states, 224123 states have (on average 4.287208363264814) internal successors, (960862), 224123 states have internal predecessors, (960862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:53:55,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224124 states to 224124 states and 960862 transitions. [2022-01-18 15:53:55,383 INFO L78 Accepts]: Start accepts. Automaton has 224124 states and 960862 transitions. Word has length 46 [2022-01-18 15:53:55,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:53:55,383 INFO L470 AbstractCegarLoop]: Abstraction has 224124 states and 960862 transitions. [2022-01-18 15:53:55,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:53:55,384 INFO L276 IsEmpty]: Start isEmpty. Operand 224124 states and 960862 transitions. [2022-01-18 15:53:56,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:53:56,065 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:53:56,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:53:56,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-18 15:53:56,066 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:53:56,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:53:56,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1037886784, now seen corresponding path program 17 times [2022-01-18 15:53:56,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:53:56,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414858828] [2022-01-18 15:53:56,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:53:56,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:53:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:53:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:53:56,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:53:56,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414858828] [2022-01-18 15:53:56,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414858828] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:53:56,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:53:56,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 15:53:56,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699813592] [2022-01-18 15:53:56,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:53:56,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:53:56,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:53:56,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:53:56,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:53:56,113 INFO L87 Difference]: Start difference. First operand 224124 states and 960862 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:54:00,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:54:00,218 INFO L93 Difference]: Finished difference Result 353337 states and 1468711 transitions. [2022-01-18 15:54:00,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 15:54:00,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:54:00,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:54:02,235 INFO L225 Difference]: With dead ends: 353337 [2022-01-18 15:54:02,235 INFO L226 Difference]: Without dead ends: 350799 [2022-01-18 15:54:02,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:54:02,236 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 155 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:54:02,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 207 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 15:54:03,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350799 states. [2022-01-18 15:54:11,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350799 to 226951. [2022-01-18 15:54:11,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226951 states, 226950 states have (on average 4.2088213262833225) internal successors, (955192), 226950 states have internal predecessors, (955192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:54:14,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226951 states to 226951 states and 955192 transitions. [2022-01-18 15:54:14,085 INFO L78 Accepts]: Start accepts. Automaton has 226951 states and 955192 transitions. Word has length 46 [2022-01-18 15:54:14,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:54:14,085 INFO L470 AbstractCegarLoop]: Abstraction has 226951 states and 955192 transitions. [2022-01-18 15:54:14,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:54:14,086 INFO L276 IsEmpty]: Start isEmpty. Operand 226951 states and 955192 transitions. [2022-01-18 15:54:15,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:54:15,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:54:15,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:54:15,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-18 15:54:15,232 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:54:15,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:54:15,232 INFO L85 PathProgramCache]: Analyzing trace with hash 326907842, now seen corresponding path program 18 times [2022-01-18 15:54:15,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:54:15,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68487510] [2022-01-18 15:54:15,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:54:15,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:54:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:54:15,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:54:15,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:54:15,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68487510] [2022-01-18 15:54:15,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68487510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:54:15,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:54:15,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 15:54:15,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698703969] [2022-01-18 15:54:15,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:54:15,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 15:54:15,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:54:15,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 15:54:15,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:54:15,285 INFO L87 Difference]: Start difference. First operand 226951 states and 955192 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:54:19,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:54:19,289 INFO L93 Difference]: Finished difference Result 324950 states and 1350459 transitions. [2022-01-18 15:54:19,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 15:54:19,289 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:54:19,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:54:23,179 INFO L225 Difference]: With dead ends: 324950 [2022-01-18 15:54:23,179 INFO L226 Difference]: Without dead ends: 323782 [2022-01-18 15:54:23,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:54:23,180 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 123 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:54:23,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 158 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 15:54:23,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323782 states. [2022-01-18 15:54:31,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323782 to 214689. [2022-01-18 15:54:31,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214689 states, 214688 states have (on average 4.190970152034581) internal successors, (899751), 214688 states have internal predecessors, (899751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:54:33,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214689 states to 214689 states and 899751 transitions. [2022-01-18 15:54:33,390 INFO L78 Accepts]: Start accepts. Automaton has 214689 states and 899751 transitions. Word has length 46 [2022-01-18 15:54:33,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:54:33,390 INFO L470 AbstractCegarLoop]: Abstraction has 214689 states and 899751 transitions. [2022-01-18 15:54:33,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:54:33,390 INFO L276 IsEmpty]: Start isEmpty. Operand 214689 states and 899751 transitions. [2022-01-18 15:54:34,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:54:34,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:54:34,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:54:34,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-18 15:54:34,784 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:54:34,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:54:34,784 INFO L85 PathProgramCache]: Analyzing trace with hash 294980832, now seen corresponding path program 19 times [2022-01-18 15:54:34,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:54:34,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381208640] [2022-01-18 15:54:34,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:54:34,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:54:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:54:34,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:54:34,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:54:34,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381208640] [2022-01-18 15:54:34,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381208640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:54:34,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:54:34,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 15:54:34,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626774239] [2022-01-18 15:54:34,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:54:34,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:54:34,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:54:34,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:54:34,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:54:34,845 INFO L87 Difference]: Start difference. First operand 214689 states and 899751 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:54:37,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:54:37,196 INFO L93 Difference]: Finished difference Result 301258 states and 1219472 transitions. [2022-01-18 15:54:37,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 15:54:37,196 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:54:37,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:54:39,444 INFO L225 Difference]: With dead ends: 301258 [2022-01-18 15:54:39,444 INFO L226 Difference]: Without dead ends: 298978 [2022-01-18 15:54:39,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:54:39,444 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 146 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:54:39,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 236 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 15:54:39,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298978 states. [2022-01-18 15:54:46,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298978 to 203045. [2022-01-18 15:54:46,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203045 states, 203044 states have (on average 4.065946297354268) internal successors, (825566), 203044 states have internal predecessors, (825566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:54:48,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203045 states to 203045 states and 825566 transitions. [2022-01-18 15:54:48,485 INFO L78 Accepts]: Start accepts. Automaton has 203045 states and 825566 transitions. Word has length 46 [2022-01-18 15:54:48,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:54:48,485 INFO L470 AbstractCegarLoop]: Abstraction has 203045 states and 825566 transitions. [2022-01-18 15:54:48,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:54:48,485 INFO L276 IsEmpty]: Start isEmpty. Operand 203045 states and 825566 transitions. [2022-01-18 15:54:49,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:54:49,056 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:54:49,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:54:49,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-18 15:54:49,057 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:54:49,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:54:49,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1875280512, now seen corresponding path program 20 times [2022-01-18 15:54:49,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:54:49,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18169536] [2022-01-18 15:54:49,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:54:49,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:54:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:54:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:54:49,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:54:49,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18169536] [2022-01-18 15:54:49,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18169536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:54:49,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:54:49,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 15:54:49,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366030039] [2022-01-18 15:54:49,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:54:49,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:54:49,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:54:49,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:54:49,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:54:49,105 INFO L87 Difference]: Start difference. First operand 203045 states and 825566 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:54:52,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:54:52,588 INFO L93 Difference]: Finished difference Result 288060 states and 1146724 transitions. [2022-01-18 15:54:52,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 15:54:52,588 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:54:52,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:54:55,546 INFO L225 Difference]: With dead ends: 288060 [2022-01-18 15:54:55,546 INFO L226 Difference]: Without dead ends: 284768 [2022-01-18 15:54:55,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:54:55,547 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 140 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 15:54:55,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 227 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 15:54:56,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284768 states. [2022-01-18 15:55:01,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284768 to 191781. [2022-01-18 15:55:02,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191781 states, 191780 states have (on average 4.031426634685578) internal successors, (773147), 191780 states have internal predecessors, (773147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:55:03,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191781 states to 191781 states and 773147 transitions. [2022-01-18 15:55:03,221 INFO L78 Accepts]: Start accepts. Automaton has 191781 states and 773147 transitions. Word has length 46 [2022-01-18 15:55:03,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:55:03,221 INFO L470 AbstractCegarLoop]: Abstraction has 191781 states and 773147 transitions. [2022-01-18 15:55:03,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:55:03,221 INFO L276 IsEmpty]: Start isEmpty. Operand 191781 states and 773147 transitions. [2022-01-18 15:55:04,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:55:04,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:55:04,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:55:04,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-18 15:55:04,516 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:55:04,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:55:04,516 INFO L85 PathProgramCache]: Analyzing trace with hash -69930492, now seen corresponding path program 21 times [2022-01-18 15:55:04,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:55:04,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410286236] [2022-01-18 15:55:04,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:55:04,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:55:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:55:04,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:55:04,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:55:04,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410286236] [2022-01-18 15:55:04,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410286236] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:55:04,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:55:04,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 15:55:04,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977785798] [2022-01-18 15:55:04,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:55:04,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:55:04,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:55:04,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:55:04,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:55:04,574 INFO L87 Difference]: Start difference. First operand 191781 states and 773147 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:55:06,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:55:06,884 INFO L93 Difference]: Finished difference Result 291444 states and 1166322 transitions. [2022-01-18 15:55:06,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 15:55:06,884 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:55:06,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:55:09,007 INFO L225 Difference]: With dead ends: 291444 [2022-01-18 15:55:09,007 INFO L226 Difference]: Without dead ends: 290940 [2022-01-18 15:55:09,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 15:55:09,008 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 147 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:55:09,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 258 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 15:55:09,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290940 states. [2022-01-18 15:55:15,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290940 to 193151. [2022-01-18 15:55:16,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193151 states, 193150 states have (on average 4.031731814651825) internal successors, (778729), 193150 states have internal predecessors, (778729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:55:17,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193151 states to 193151 states and 778729 transitions. [2022-01-18 15:55:17,620 INFO L78 Accepts]: Start accepts. Automaton has 193151 states and 778729 transitions. Word has length 46 [2022-01-18 15:55:17,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:55:17,620 INFO L470 AbstractCegarLoop]: Abstraction has 193151 states and 778729 transitions. [2022-01-18 15:55:17,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:55:17,620 INFO L276 IsEmpty]: Start isEmpty. Operand 193151 states and 778729 transitions. [2022-01-18 15:55:18,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:55:18,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:55:18,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:55:18,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-18 15:55:18,103 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:55:18,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:55:18,104 INFO L85 PathProgramCache]: Analyzing trace with hash 720177954, now seen corresponding path program 22 times [2022-01-18 15:55:18,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:55:18,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418741156] [2022-01-18 15:55:18,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:55:18,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:55:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:55:18,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:55:18,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:55:18,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418741156] [2022-01-18 15:55:18,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418741156] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:55:18,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:55:18,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:55:18,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964956041] [2022-01-18 15:55:18,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:55:18,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 15:55:18,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:55:18,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 15:55:18,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-18 15:55:18,161 INFO L87 Difference]: Start difference. First operand 193151 states and 778729 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:55:21,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:55:21,088 INFO L93 Difference]: Finished difference Result 290239 states and 1157560 transitions. [2022-01-18 15:55:21,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 15:55:21,089 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:55:21,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:55:23,221 INFO L225 Difference]: With dead ends: 290239 [2022-01-18 15:55:23,221 INFO L226 Difference]: Without dead ends: 288247 [2022-01-18 15:55:23,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:55:23,222 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 169 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:55:23,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 342 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 15:55:23,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288247 states. [2022-01-18 15:55:29,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288247 to 190545. [2022-01-18 15:55:29,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190545 states, 190544 states have (on average 4.026056973717357) internal successors, (767141), 190544 states have internal predecessors, (767141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:55:30,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190545 states to 190545 states and 767141 transitions. [2022-01-18 15:55:30,771 INFO L78 Accepts]: Start accepts. Automaton has 190545 states and 767141 transitions. Word has length 46 [2022-01-18 15:55:30,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:55:30,772 INFO L470 AbstractCegarLoop]: Abstraction has 190545 states and 767141 transitions. [2022-01-18 15:55:30,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:55:30,772 INFO L276 IsEmpty]: Start isEmpty. Operand 190545 states and 767141 transitions. [2022-01-18 15:55:32,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:55:32,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:55:32,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:55:32,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-18 15:55:32,134 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:55:32,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:55:32,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1029661538, now seen corresponding path program 23 times [2022-01-18 15:55:32,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:55:32,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415800734] [2022-01-18 15:55:32,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:55:32,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:55:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:55:32,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:55:32,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:55:32,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415800734] [2022-01-18 15:55:32,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415800734] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:55:32,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:55:32,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-18 15:55:32,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298906272] [2022-01-18 15:55:32,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:55:32,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 15:55:32,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:55:32,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 15:55:32,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-18 15:55:32,196 INFO L87 Difference]: Start difference. First operand 190545 states and 767141 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:55:35,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:55:35,352 INFO L93 Difference]: Finished difference Result 295536 states and 1171795 transitions. [2022-01-18 15:55:35,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 15:55:35,352 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:55:35,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:55:36,936 INFO L225 Difference]: With dead ends: 295536 [2022-01-18 15:55:36,936 INFO L226 Difference]: Without dead ends: 294600 [2022-01-18 15:55:36,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-01-18 15:55:36,937 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 221 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 15:55:36,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 428 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 15:55:37,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294600 states. [2022-01-18 15:55:43,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294600 to 201602. [2022-01-18 15:55:44,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201602 states, 201601 states have (on average 3.9736707655219963) internal successors, (801096), 201601 states have internal predecessors, (801096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:55:46,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201602 states to 201602 states and 801096 transitions. [2022-01-18 15:55:46,902 INFO L78 Accepts]: Start accepts. Automaton has 201602 states and 801096 transitions. Word has length 46 [2022-01-18 15:55:46,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:55:46,902 INFO L470 AbstractCegarLoop]: Abstraction has 201602 states and 801096 transitions. [2022-01-18 15:55:46,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:55:46,902 INFO L276 IsEmpty]: Start isEmpty. Operand 201602 states and 801096 transitions. [2022-01-18 15:55:47,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:55:47,644 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:55:47,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:55:47,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-18 15:55:47,644 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:55:47,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:55:47,644 INFO L85 PathProgramCache]: Analyzing trace with hash -172253148, now seen corresponding path program 24 times [2022-01-18 15:55:47,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:55:47,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699788898] [2022-01-18 15:55:47,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:55:47,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:55:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:55:47,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:55:47,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:55:47,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699788898] [2022-01-18 15:55:47,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699788898] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:55:47,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:55:47,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 15:55:47,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057961100] [2022-01-18 15:55:47,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:55:47,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:55:47,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:55:47,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:55:47,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:55:47,746 INFO L87 Difference]: Start difference. First operand 201602 states and 801096 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:55:51,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:55:51,482 INFO L93 Difference]: Finished difference Result 301277 states and 1187823 transitions. [2022-01-18 15:55:51,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 15:55:51,491 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:55:51,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:55:54,538 INFO L225 Difference]: With dead ends: 301277 [2022-01-18 15:55:54,539 INFO L226 Difference]: Without dead ends: 300645 [2022-01-18 15:55:54,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 15:55:54,539 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 145 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:55:54,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 234 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 15:55:55,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300645 states. [2022-01-18 15:56:01,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300645 to 202082. [2022-01-18 15:56:02,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202082 states, 202081 states have (on average 3.971120491288147) internal successors, (802488), 202081 states have internal predecessors, (802488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:56:03,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202082 states to 202082 states and 802488 transitions. [2022-01-18 15:56:03,722 INFO L78 Accepts]: Start accepts. Automaton has 202082 states and 802488 transitions. Word has length 46 [2022-01-18 15:56:03,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:56:03,722 INFO L470 AbstractCegarLoop]: Abstraction has 202082 states and 802488 transitions. [2022-01-18 15:56:03,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:56:03,722 INFO L276 IsEmpty]: Start isEmpty. Operand 202082 states and 802488 transitions. [2022-01-18 15:56:04,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:56:04,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:56:04,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:56:04,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-18 15:56:04,295 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:56:04,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:56:04,296 INFO L85 PathProgramCache]: Analyzing trace with hash -204180158, now seen corresponding path program 25 times [2022-01-18 15:56:04,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:56:04,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534661746] [2022-01-18 15:56:04,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:56:04,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:56:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:56:04,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:56:04,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:56:04,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534661746] [2022-01-18 15:56:04,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534661746] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:56:04,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:56:04,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:56:04,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028353474] [2022-01-18 15:56:04,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:56:04,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 15:56:04,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:56:04,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 15:56:04,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-18 15:56:04,351 INFO L87 Difference]: Start difference. First operand 202082 states and 802488 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:56:07,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:56:07,316 INFO L93 Difference]: Finished difference Result 298837 states and 1174975 transitions. [2022-01-18 15:56:07,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 15:56:07,316 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:56:07,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:56:08,715 INFO L225 Difference]: With dead ends: 298837 [2022-01-18 15:56:08,715 INFO L226 Difference]: Without dead ends: 295837 [2022-01-18 15:56:08,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:56:08,716 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 168 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:56:08,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 307 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 15:56:09,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295837 states. [2022-01-18 15:56:15,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295837 to 197472. [2022-01-18 15:56:16,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197472 states, 197471 states have (on average 3.9615184001701516) internal successors, (782285), 197471 states have internal predecessors, (782285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:56:17,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197472 states to 197472 states and 782285 transitions. [2022-01-18 15:56:17,092 INFO L78 Accepts]: Start accepts. Automaton has 197472 states and 782285 transitions. Word has length 46 [2022-01-18 15:56:17,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:56:17,092 INFO L470 AbstractCegarLoop]: Abstraction has 197472 states and 782285 transitions. [2022-01-18 15:56:17,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:56:17,092 INFO L276 IsEmpty]: Start isEmpty. Operand 197472 states and 782285 transitions. [2022-01-18 15:56:18,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:56:18,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:56:18,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:56:18,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-18 15:56:18,465 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:56:18,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:56:18,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1166835390, now seen corresponding path program 26 times [2022-01-18 15:56:18,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:56:18,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351335553] [2022-01-18 15:56:18,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:56:18,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:56:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:56:18,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:56:18,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:56:18,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351335553] [2022-01-18 15:56:18,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351335553] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:56:18,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:56:18,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-18 15:56:18,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721520267] [2022-01-18 15:56:18,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:56:18,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 15:56:18,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:56:18,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 15:56:18,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-18 15:56:18,529 INFO L87 Difference]: Start difference. First operand 197472 states and 782285 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:56:20,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:56:20,973 INFO L93 Difference]: Finished difference Result 296493 states and 1155264 transitions. [2022-01-18 15:56:20,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 15:56:20,973 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:56:20,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:56:23,179 INFO L225 Difference]: With dead ends: 296493 [2022-01-18 15:56:23,180 INFO L226 Difference]: Without dead ends: 290089 [2022-01-18 15:56:23,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-01-18 15:56:23,180 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 213 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:56:23,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 347 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 15:56:23,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290089 states. [2022-01-18 15:56:30,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290089 to 200246. [2022-01-18 15:56:31,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200246 states, 200245 states have (on average 3.9184449049913854) internal successors, (784649), 200245 states have internal predecessors, (784649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:56:33,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200246 states to 200246 states and 784649 transitions. [2022-01-18 15:56:33,425 INFO L78 Accepts]: Start accepts. Automaton has 200246 states and 784649 transitions. Word has length 46 [2022-01-18 15:56:33,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:56:33,425 INFO L470 AbstractCegarLoop]: Abstraction has 200246 states and 784649 transitions. [2022-01-18 15:56:33,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:56:33,425 INFO L276 IsEmpty]: Start isEmpty. Operand 200246 states and 784649 transitions. [2022-01-18 15:56:34,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:56:34,300 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:56:34,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:56:34,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-18 15:56:34,301 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:56:34,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:56:34,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1214526016, now seen corresponding path program 27 times [2022-01-18 15:56:34,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:56:34,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862286139] [2022-01-18 15:56:34,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:56:34,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:56:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:56:34,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:56:34,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:56:34,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862286139] [2022-01-18 15:56:34,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862286139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:56:34,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:56:34,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:56:34,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890908882] [2022-01-18 15:56:34,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:56:34,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 15:56:34,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:56:34,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 15:56:34,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-18 15:56:34,393 INFO L87 Difference]: Start difference. First operand 200246 states and 784649 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:56:38,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:56:38,238 INFO L93 Difference]: Finished difference Result 293831 states and 1136141 transitions. [2022-01-18 15:56:38,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 15:56:38,239 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:56:38,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:56:39,621 INFO L225 Difference]: With dead ends: 293831 [2022-01-18 15:56:39,621 INFO L226 Difference]: Without dead ends: 290963 [2022-01-18 15:56:39,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:56:39,622 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 154 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:56:39,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 323 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 15:56:40,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290963 states. [2022-01-18 15:56:45,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290963 to 193515. [2022-01-18 15:56:46,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193515 states, 193514 states have (on average 3.905562388250979) internal successors, (755781), 193514 states have internal predecessors, (755781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:56:47,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193515 states to 193515 states and 755781 transitions. [2022-01-18 15:56:47,771 INFO L78 Accepts]: Start accepts. Automaton has 193515 states and 755781 transitions. Word has length 46 [2022-01-18 15:56:47,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:56:47,771 INFO L470 AbstractCegarLoop]: Abstraction has 193515 states and 755781 transitions. [2022-01-18 15:56:47,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:56:47,771 INFO L276 IsEmpty]: Start isEmpty. Operand 193515 states and 755781 transitions. [2022-01-18 15:56:49,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:56:49,026 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:56:49,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:56:49,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-18 15:56:49,026 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:56:49,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:56:49,027 INFO L85 PathProgramCache]: Analyzing trace with hash -555247714, now seen corresponding path program 28 times [2022-01-18 15:56:49,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:56:49,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755277188] [2022-01-18 15:56:49,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:56:49,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:56:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:56:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:56:49,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:56:49,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755277188] [2022-01-18 15:56:49,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755277188] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:56:49,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:56:49,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-18 15:56:49,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89290944] [2022-01-18 15:56:49,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:56:49,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 15:56:49,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:56:49,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 15:56:49,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-18 15:56:49,113 INFO L87 Difference]: Start difference. First operand 193515 states and 755781 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:56:51,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:56:51,443 INFO L93 Difference]: Finished difference Result 283290 states and 1078797 transitions. [2022-01-18 15:56:51,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 15:56:51,443 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:56:51,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:56:53,443 INFO L225 Difference]: With dead ends: 283290 [2022-01-18 15:56:53,443 INFO L226 Difference]: Without dead ends: 280266 [2022-01-18 15:56:53,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-01-18 15:56:53,443 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 211 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 15:56:53,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 464 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 15:56:53,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280266 states. [2022-01-18 15:56:59,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280266 to 193510. [2022-01-18 15:56:59,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193510 states, 193509 states have (on average 3.849350676195939) internal successors, (744884), 193509 states have internal predecessors, (744884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:57:00,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193510 states to 193510 states and 744884 transitions. [2022-01-18 15:57:00,722 INFO L78 Accepts]: Start accepts. Automaton has 193510 states and 744884 transitions. Word has length 46 [2022-01-18 15:57:00,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:57:00,722 INFO L470 AbstractCegarLoop]: Abstraction has 193510 states and 744884 transitions. [2022-01-18 15:57:00,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:57:00,723 INFO L276 IsEmpty]: Start isEmpty. Operand 193510 states and 744884 transitions. [2022-01-18 15:57:02,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:57:02,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:57:02,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:57:02,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-18 15:57:02,078 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:57:02,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:57:02,078 INFO L85 PathProgramCache]: Analyzing trace with hash 690616134, now seen corresponding path program 29 times [2022-01-18 15:57:02,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:57:02,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575528873] [2022-01-18 15:57:02,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:57:02,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:57:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:57:02,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:57:02,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:57:02,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575528873] [2022-01-18 15:57:02,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575528873] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:57:02,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:57:02,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-18 15:57:02,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217906543] [2022-01-18 15:57:02,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:57:02,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 15:57:02,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:57:02,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 15:57:02,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-18 15:57:02,138 INFO L87 Difference]: Start difference. First operand 193510 states and 744884 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:57:04,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:57:04,383 INFO L93 Difference]: Finished difference Result 270531 states and 1004554 transitions. [2022-01-18 15:57:04,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 15:57:04,384 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:57:04,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:57:06,240 INFO L225 Difference]: With dead ends: 270531 [2022-01-18 15:57:06,240 INFO L226 Difference]: Without dead ends: 262632 [2022-01-18 15:57:06,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-01-18 15:57:06,241 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 208 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:57:06,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 366 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 15:57:06,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262632 states. [2022-01-18 15:57:11,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262632 to 177887. [2022-01-18 15:57:11,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177887 states, 177886 states have (on average 3.7640623770279844) internal successors, (669574), 177886 states have internal predecessors, (669574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:57:13,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177887 states to 177887 states and 669574 transitions. [2022-01-18 15:57:13,755 INFO L78 Accepts]: Start accepts. Automaton has 177887 states and 669574 transitions. Word has length 46 [2022-01-18 15:57:13,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:57:13,755 INFO L470 AbstractCegarLoop]: Abstraction has 177887 states and 669574 transitions. [2022-01-18 15:57:13,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:57:13,755 INFO L276 IsEmpty]: Start isEmpty. Operand 177887 states and 669574 transitions. [2022-01-18 15:57:14,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:57:14,377 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:57:14,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:57:14,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-18 15:57:14,378 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:57:14,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:57:14,378 INFO L85 PathProgramCache]: Analyzing trace with hash -751832516, now seen corresponding path program 30 times [2022-01-18 15:57:14,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:57:14,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87911865] [2022-01-18 15:57:14,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:57:14,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:57:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:57:14,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:57:14,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:57:14,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87911865] [2022-01-18 15:57:14,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87911865] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:57:14,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:57:14,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:57:14,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647501945] [2022-01-18 15:57:14,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:57:14,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 15:57:14,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:57:14,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 15:57:14,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-01-18 15:57:14,437 INFO L87 Difference]: Start difference. First operand 177887 states and 669574 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:57:17,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:57:17,102 INFO L93 Difference]: Finished difference Result 252067 states and 931157 transitions. [2022-01-18 15:57:17,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 15:57:17,102 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:57:17,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:57:19,473 INFO L225 Difference]: With dead ends: 252067 [2022-01-18 15:57:19,473 INFO L226 Difference]: Without dead ends: 251851 [2022-01-18 15:57:19,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:57:19,475 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 181 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 15:57:19,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 336 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 15:57:19,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251851 states. [2022-01-18 15:57:25,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251851 to 177835. [2022-01-18 15:57:25,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177835 states, 177834 states have (on average 3.7627337854403544) internal successors, (669142), 177834 states have internal predecessors, (669142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:57:26,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177835 states to 177835 states and 669142 transitions. [2022-01-18 15:57:26,756 INFO L78 Accepts]: Start accepts. Automaton has 177835 states and 669142 transitions. Word has length 46 [2022-01-18 15:57:26,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:57:26,756 INFO L470 AbstractCegarLoop]: Abstraction has 177835 states and 669142 transitions. [2022-01-18 15:57:26,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:57:26,756 INFO L276 IsEmpty]: Start isEmpty. Operand 177835 states and 669142 transitions. [2022-01-18 15:57:27,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:57:27,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:57:27,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:57:27,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-18 15:57:27,182 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:57:27,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:57:27,182 INFO L85 PathProgramCache]: Analyzing trace with hash 2000978492, now seen corresponding path program 31 times [2022-01-18 15:57:27,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:57:27,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296054060] [2022-01-18 15:57:27,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:57:27,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:57:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:57:27,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:57:27,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:57:27,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296054060] [2022-01-18 15:57:27,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296054060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:57:27,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:57:27,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-18 15:57:27,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743358816] [2022-01-18 15:57:27,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:57:27,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 15:57:27,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:57:27,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 15:57:27,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-18 15:57:27,244 INFO L87 Difference]: Start difference. First operand 177835 states and 669142 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:57:30,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:57:30,141 INFO L93 Difference]: Finished difference Result 256522 states and 945678 transitions. [2022-01-18 15:57:30,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 15:57:30,141 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:57:30,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:57:31,291 INFO L225 Difference]: With dead ends: 256522 [2022-01-18 15:57:31,291 INFO L226 Difference]: Without dead ends: 255610 [2022-01-18 15:57:31,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2022-01-18 15:57:31,292 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 223 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 15:57:31,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 384 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 15:57:31,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255610 states. [2022-01-18 15:57:36,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255610 to 176590. [2022-01-18 15:57:37,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176590 states, 176589 states have (on average 3.7559021230087946) internal successors, (663251), 176589 states have internal predecessors, (663251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:57:37,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176590 states to 176590 states and 663251 transitions. [2022-01-18 15:57:37,958 INFO L78 Accepts]: Start accepts. Automaton has 176590 states and 663251 transitions. Word has length 46 [2022-01-18 15:57:37,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:57:37,958 INFO L470 AbstractCegarLoop]: Abstraction has 176590 states and 663251 transitions. [2022-01-18 15:57:37,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:57:37,958 INFO L276 IsEmpty]: Start isEmpty. Operand 176590 states and 663251 transitions. [2022-01-18 15:57:39,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:57:39,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:57:39,191 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:57:39,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-18 15:57:39,192 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:57:39,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:57:39,192 INFO L85 PathProgramCache]: Analyzing trace with hash -165717444, now seen corresponding path program 32 times [2022-01-18 15:57:39,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:57:39,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527780235] [2022-01-18 15:57:39,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:57:39,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:57:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:57:39,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:57:39,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:57:39,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527780235] [2022-01-18 15:57:39,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527780235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:57:39,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:57:39,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-18 15:57:39,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619875742] [2022-01-18 15:57:39,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:57:39,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 15:57:39,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:57:39,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 15:57:39,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:57:39,273 INFO L87 Difference]: Start difference. First operand 176590 states and 663251 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:57:41,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:57:41,377 INFO L93 Difference]: Finished difference Result 245303 states and 906317 transitions. [2022-01-18 15:57:41,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 15:57:41,377 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:57:41,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:57:42,404 INFO L225 Difference]: With dead ends: 245303 [2022-01-18 15:57:42,404 INFO L226 Difference]: Without dead ends: 243275 [2022-01-18 15:57:42,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2022-01-18 15:57:42,405 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 251 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:57:42,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 440 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 15:57:43,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243275 states. [2022-01-18 15:57:48,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243275 to 175768. [2022-01-18 15:57:48,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175768 states, 175767 states have (on average 3.7492646514988595) internal successors, (658997), 175767 states have internal predecessors, (658997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:57:48,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175768 states to 175768 states and 658997 transitions. [2022-01-18 15:57:48,931 INFO L78 Accepts]: Start accepts. Automaton has 175768 states and 658997 transitions. Word has length 46 [2022-01-18 15:57:48,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:57:48,932 INFO L470 AbstractCegarLoop]: Abstraction has 175768 states and 658997 transitions. [2022-01-18 15:57:48,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:57:48,932 INFO L276 IsEmpty]: Start isEmpty. Operand 175768 states and 658997 transitions. [2022-01-18 15:57:50,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:57:50,173 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:57:50,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:57:50,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-18 15:57:50,174 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:57:50,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:57:50,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1585157342, now seen corresponding path program 33 times [2022-01-18 15:57:50,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:57:50,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255933725] [2022-01-18 15:57:50,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:57:50,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:57:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:57:50,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:57:50,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:57:50,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255933725] [2022-01-18 15:57:50,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255933725] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:57:50,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:57:50,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-18 15:57:50,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599183337] [2022-01-18 15:57:50,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:57:50,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 15:57:50,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:57:50,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 15:57:50,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:57:50,240 INFO L87 Difference]: Start difference. First operand 175768 states and 658997 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:57:52,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:57:52,579 INFO L93 Difference]: Finished difference Result 247402 states and 911757 transitions. [2022-01-18 15:57:52,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 15:57:52,580 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:57:52,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:57:54,272 INFO L225 Difference]: With dead ends: 247402 [2022-01-18 15:57:54,272 INFO L226 Difference]: Without dead ends: 245974 [2022-01-18 15:57:54,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2022-01-18 15:57:54,273 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 300 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 15:57:54,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 585 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 15:57:54,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245974 states. [2022-01-18 15:58:00,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245974 to 183527. [2022-01-18 15:58:01,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183527 states, 183526 states have (on average 3.722627856543487) internal successors, (683199), 183526 states have internal predecessors, (683199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:58:01,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183527 states to 183527 states and 683199 transitions. [2022-01-18 15:58:01,984 INFO L78 Accepts]: Start accepts. Automaton has 183527 states and 683199 transitions. Word has length 46 [2022-01-18 15:58:01,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:58:01,984 INFO L470 AbstractCegarLoop]: Abstraction has 183527 states and 683199 transitions. [2022-01-18 15:58:01,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:58:01,985 INFO L276 IsEmpty]: Start isEmpty. Operand 183527 states and 683199 transitions. [2022-01-18 15:58:03,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:58:03,271 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:58:03,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:58:03,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-18 15:58:03,271 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:58:03,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:58:03,272 INFO L85 PathProgramCache]: Analyzing trace with hash 521148508, now seen corresponding path program 34 times [2022-01-18 15:58:03,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:58:03,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311746263] [2022-01-18 15:58:03,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:58:03,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:58:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:58:03,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:58:03,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:58:03,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311746263] [2022-01-18 15:58:03,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311746263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:58:03,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:58:03,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:58:03,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76642073] [2022-01-18 15:58:03,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:58:03,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 15:58:03,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:58:03,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 15:58:03,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-01-18 15:58:03,321 INFO L87 Difference]: Start difference. First operand 183527 states and 683199 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:58:05,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:58:05,392 INFO L93 Difference]: Finished difference Result 261534 states and 955866 transitions. [2022-01-18 15:58:05,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 15:58:05,392 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 15:58:05,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:58:07,121 INFO L225 Difference]: With dead ends: 261534 [2022-01-18 15:58:07,121 INFO L226 Difference]: Without dead ends: 261070 [2022-01-18 15:58:07,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:58:07,122 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 193 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:58:07,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 322 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 15:58:07,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261070 states. [2022-01-18 15:58:12,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261070 to 183479. [2022-01-18 15:58:12,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183479 states, 183478 states have (on average 3.7196775635226023) internal successors, (682479), 183478 states have internal predecessors, (682479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:58:14,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183479 states to 183479 states and 682479 transitions. [2022-01-18 15:58:14,049 INFO L78 Accepts]: Start accepts. Automaton has 183479 states and 682479 transitions. Word has length 46 [2022-01-18 15:58:14,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:58:14,049 INFO L470 AbstractCegarLoop]: Abstraction has 183479 states and 682479 transitions. [2022-01-18 15:58:14,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:58:14,049 INFO L276 IsEmpty]: Start isEmpty. Operand 183479 states and 682479 transitions. [2022-01-18 15:58:14,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 15:58:14,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:58:14,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:58:14,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-18 15:58:14,498 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-18 15:58:14,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:58:14,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1843043236, now seen corresponding path program 35 times [2022-01-18 15:58:14,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:58:14,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479714198] [2022-01-18 15:58:14,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:58:14,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:58:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:58:14,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:58:14,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:58:14,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479714198] [2022-01-18 15:58:14,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479714198] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:58:14,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:58:14,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-18 15:58:14,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653673965] [2022-01-18 15:58:14,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:58:14,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 15:58:14,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:58:14,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 15:58:14,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-18 15:58:14,555 INFO L87 Difference]: Start difference. First operand 183479 states and 682479 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-01-18 15:58:16,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 15:58:16,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2022-01-18 15:58:16,180 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 181 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:58:16,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 397 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 15:58:16,181 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (6 of 7 remaining) [2022-01-18 15:58:16,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-18 15:58:16,182 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (183479states) and FLOYD_HOARE automaton (currently 13 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (172493 states constructed, input type IntersectNwa). [2022-01-18 15:58:16,183 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (5 of 7 remaining) [2022-01-18 15:58:16,184 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (4 of 7 remaining) [2022-01-18 15:58:16,184 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (3 of 7 remaining) [2022-01-18 15:58:16,184 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION (2 of 7 remaining) [2022-01-18 15:58:16,184 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4INUSE_VIOLATION (1 of 7 remaining) [2022-01-18 15:58:16,185 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5INUSE_VIOLATION (0 of 7 remaining) [2022-01-18 15:58:16,186 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 15:58:16,187 INFO L732 BasicCegarLoop]: Path program histogram: [35] [2022-01-18 15:58:16,191 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 15:58:16,191 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 15:58:16,193 INFO L202 PluginConnector]: Adding new model ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 03:58:16 BasicIcfg [2022-01-18 15:58:16,193 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 15:58:16,193 INFO L158 Benchmark]: Toolchain (without parser) took 546674.48ms. Allocated memory was 356.5MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 318.8MB in the beginning and 11.5GB in the end (delta: -11.2GB). Peak memory consumption was 4.9GB. Max. memory is 16.0GB. [2022-01-18 15:58:16,193 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 356.5MB. Free memory is still 319.9MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 15:58:16,193 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.65ms. Allocated memory is still 356.5MB. Free memory was 318.7MB in the beginning and 317.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 15:58:16,193 INFO L158 Benchmark]: Boogie Preprocessor took 10.74ms. Allocated memory is still 356.5MB. Free memory was 317.2MB in the beginning and 316.3MB in the end (delta: 891.9kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 15:58:16,194 INFO L158 Benchmark]: RCFGBuilder took 248.71ms. Allocated memory is still 356.5MB. Free memory was 316.2MB in the beginning and 305.4MB in the end (delta: 10.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-18 15:58:16,194 INFO L158 Benchmark]: TraceAbstraction took 546380.33ms. Allocated memory was 356.5MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 305.0MB in the beginning and 11.5GB in the end (delta: -11.2GB). Peak memory consumption was 4.9GB. Max. memory is 16.0GB. [2022-01-18 15:58:16,195 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12ms. Allocated memory is still 356.5MB. Free memory is still 319.9MB. There was no memory consumed. Max. memory is 16.0GB. * Boogie Procedure Inliner took 25.65ms. Allocated memory is still 356.5MB. Free memory was 318.7MB in the beginning and 317.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 10.74ms. Allocated memory is still 356.5MB. Free memory was 317.2MB in the beginning and 316.3MB in the end (delta: 891.9kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 248.71ms. Allocated memory is still 356.5MB. Free memory was 316.2MB in the beginning and 305.4MB in the end (delta: 10.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 546380.33ms. Allocated memory was 356.5MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 305.0MB in the beginning and 11.5GB in the end (delta: -11.2GB). Peak memory consumption was 4.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (183479states) and FLOYD_HOARE automaton (currently 13 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (172493 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (183479states) and FLOYD_HOARE automaton (currently 13 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (172493 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (183479states) and FLOYD_HOARE automaton (currently 13 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (172493 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (183479states) and FLOYD_HOARE automaton (currently 13 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (172493 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (183479states) and FLOYD_HOARE automaton (currently 13 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (172493 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (183479states) and FLOYD_HOARE automaton (currently 13 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (172493 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (183479states) and FLOYD_HOARE automaton (currently 13 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (172493 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 13 procedures, 98 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 546.2s, OverallIterations: 35, TraceHistogramMax: 1, PathProgramHistogramMax: 35, EmptinessCheckTime: 34.1s, AutomataDifference: 195.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5704 SdHoareTripleChecker+Valid, 11.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5704 mSDsluCounter, 9578 SdHoareTripleChecker+Invalid, 8.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12232 mSDsCounter, 2245 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18637 IncrementalHoareTripleChecker+Invalid, 20882 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2245 mSolverCounterUnsat, 2186 mSDtfsCounter, 18637 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 466 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230772occurred in iteration=12, InterpolantAutomatonStates: 325, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 311.4s AutomataMinimizationTime, 34 MinimizatonAttempts, 3330151 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 1610 NumberOfCodeBlocks, 1610 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 1575 ConstructedInterpolants, 0 QuantifiedInterpolants, 5055 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 35 InterpolantComputations, 35 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown