/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.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-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 21:25:26,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 21:25:26,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 21:25:26,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 21:25:26,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 21:25:26,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 21:25:26,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 21:25:26,224 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 21:25:26,260 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 21:25:26,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 21:25:26,261 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 21:25:26,261 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 21:25:26,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 21:25:26,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 21:25:26,262 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 21:25:26,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 21:25:26,262 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 21:25:26,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 21:25:26,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 21:25:26,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 21:25:26,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 21:25:26,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 21:25:26,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 21:25:26,264 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 21:25:26,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 21:25:26,264 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 21:25:26,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 21:25:26,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 21:25:26,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 21:25:26,265 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 21:25:26,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 21:25:26,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 21:25:26,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 21:25:26,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 21:25:26,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 21:25:26,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 21:25:26,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 21:25:26,266 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 21:25:26,266 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 21:25:26,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 21:25:26,266 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 21:25:26,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 21:25:26,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 21:25:26,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 21:25:26,506 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 21:25:26,507 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 21:25:26,508 INFO L432 ainManager$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 [2022-03-15 21:25:26,508 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl' [2022-03-15 21:25:26,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 21:25:26,544 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 21:25:26,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 21:25:26,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 21:25:26,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 21:25:26,555 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 15.03 09:25:26" (1/1) ... [2022-03-15 21:25:26,562 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 15.03 09:25:26" (1/1) ... [2022-03-15 21:25:26,568 INFO L137 Inliner]: procedures = 7, calls = 6, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 21:25:26,569 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 21:25:26,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 21:25:26,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 21:25:26,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 21:25:26,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:25:26" (1/1) ... [2022-03-15 21:25:26,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:25:26" (1/1) ... [2022-03-15 21:25:26,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:25:26" (1/1) ... [2022-03-15 21:25:26,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:25:26" (1/1) ... [2022-03-15 21:25:26,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:25:26" (1/1) ... [2022-03-15 21:25:26,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:25:26" (1/1) ... [2022-03-15 21:25:26,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:25:26" (1/1) ... [2022-03-15 21:25:26,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 21:25:26,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 21:25:26,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 21:25:26,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 21:25:26,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:25:26" (1/1) ... [2022-03-15 21:25:26,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 21:25:26,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:25:26,625 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) [2022-03-15 21:25:26,632 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 [2022-03-15 21:25:26,665 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-15 21:25:26,665 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 21:25:26,665 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 21:25:26,665 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-15 21:25:26,665 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 21:25:26,665 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 21:25:26,665 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 21:25:26,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 21:25:26,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 21:25:26,666 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-03-15 21:25:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-15 21:25:26,666 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-15 21:25:26,666 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2022-03-15 21:25:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-03-15 21:25:26,666 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-03-15 21:25:26,666 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2022-03-15 21:25:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-03-15 21:25:26,666 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-03-15 21:25:26,667 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2022-03-15 21:25:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-03-15 21:25:26,667 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-03-15 21:25:26,668 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 21:25:26,704 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 21:25:26,706 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 21:25:26,797 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 21:25:26,812 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 21:25:26,812 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 21:25:26,814 INFO L202 PluginConnector]: Adding new model ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 09:25:26 BoogieIcfgContainer [2022-03-15 21:25:26,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 21:25:26,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 21:25:26,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 21:25:26,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 21:25:26,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:25:26" (1/2) ... [2022-03-15 21:25:26,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34652d5d and model type ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 09:25:26, skipping insertion in model container [2022-03-15 21:25:26,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 09:25:26" (2/2) ... [2022-03-15 21:25:26,826 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-6.wvr.bpl [2022-03-15 21:25:26,830 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 21:25:26,830 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 21:25:26,830 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 21:25:26,830 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 21:25:26,912 INFO L148 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-03-15 21:25:26,971 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 21:25:26,979 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 21:25:26,979 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-03-15 21:25:26,990 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 21:25:26,999 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 54 transitions, 156 flow [2022-03-15 21:25:27,001 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 54 transitions, 156 flow [2022-03-15 21:25:27,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 54 transitions, 156 flow [2022-03-15 21:25:27,043 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2022-03-15 21:25:27,044 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-03-15 21:25:27,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 48 events. 0/48 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 120 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-03-15 21:25:27,048 INFO L116 LiptonReduction]: Number of co-enabled transitions 1110 [2022-03-15 21:25:27,164 INFO L131 LiptonReduction]: Checked pairs total: 3715 [2022-03-15 21:25:27,164 INFO L133 LiptonReduction]: Total number of compositions: 9 [2022-03-15 21:25:27,170 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 65 places, 46 transitions, 140 flow [2022-03-15 21:25:28,457 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 27345 states, 27344 states have (on average 4.828591281451141) internal successors, (132033), 27344 states have internal predecessors, (132033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:25:28,520 INFO L276 IsEmpty]: Start isEmpty. Operand has 27345 states, 27344 states have (on average 4.828591281451141) internal successors, (132033), 27344 states have internal predecessors, (132033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:25:28,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 21:25:28,796 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:25:28,797 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] [2022-03-15 21:25:28,797 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 21:25:28,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:25:28,805 INFO L85 PathProgramCache]: Analyzing trace with hash -379291513, now seen corresponding path program 1 times [2022-03-15 21:25:28,823 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:25:28,824 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261054939] [2022-03-15 21:25:28,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:25:28,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:25:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:25:29,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:25:29,222 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:25:29,222 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261054939] [2022-03-15 21:25:29,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261054939] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:25:29,223 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:25:29,223 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 21:25:29,224 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [613982217] [2022-03-15 21:25:29,225 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:25:29,253 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:25:29,365 INFO L252 McrAutomatonBuilder]: Finished intersection with 187 states and 406 transitions. [2022-03-15 21:25:29,366 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:25:30,836 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [54775#(<= (+ 3 s) t), 54774#(<= (+ 3 s) m5), 54773#(not (<= m5 s))] [2022-03-15 21:25:30,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 21:25:30,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:25:30,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 21:25:30,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-15 21:25:30,981 INFO L87 Difference]: Start difference. First operand has 27345 states, 27344 states have (on average 4.828591281451141) internal successors, (132033), 27344 states have internal predecessors, (132033), 0 states have call successors, (0), 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 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:25:32,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:25:32,581 INFO L93 Difference]: Finished difference Result 75928 states and 332054 transitions. [2022-03-15 21:25:32,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 21:25:32,583 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 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 39 [2022-03-15 21:25:32,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:25:33,605 INFO L225 Difference]: With dead ends: 75928 [2022-03-15 21:25:33,606 INFO L226 Difference]: Without dead ends: 75928 [2022-03-15 21:25:33,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 134 SyntacticMatches, 12 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-03-15 21:25:33,616 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 136 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 21:25:33,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 196 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 21:25:33,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75928 states. [2022-03-15 21:25:36,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75928 to 44292. [2022-03-15 21:25:36,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44292 states, 44291 states have (on average 4.6046826669074985) internal successors, (203946), 44291 states have internal predecessors, (203946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:25:37,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44292 states to 44292 states and 203946 transitions. [2022-03-15 21:25:37,076 INFO L78 Accepts]: Start accepts. Automaton has 44292 states and 203946 transitions. Word has length 39 [2022-03-15 21:25:37,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:25:37,077 INFO L470 AbstractCegarLoop]: Abstraction has 44292 states and 203946 transitions. [2022-03-15 21:25:37,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:25:37,078 INFO L276 IsEmpty]: Start isEmpty. Operand 44292 states and 203946 transitions. [2022-03-15 21:25:37,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 21:25:37,309 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:25:37,309 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] [2022-03-15 21:25:37,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 21:25:37,310 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 21:25:37,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:25:37,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1564698707, now seen corresponding path program 2 times [2022-03-15 21:25:37,313 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:25:37,313 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514663789] [2022-03-15 21:25:37,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:25:37,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:25:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:25:37,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:25:37,608 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:25:37,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514663789] [2022-03-15 21:25:37,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514663789] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:25:37,609 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:25:37,609 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-15 21:25:37,609 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1928031891] [2022-03-15 21:25:37,609 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:25:37,619 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:25:37,664 INFO L252 McrAutomatonBuilder]: Finished intersection with 166 states and 348 transitions. [2022-03-15 21:25:37,664 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:25:38,482 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [219308#(not (<= m6 s)), 219310#(<= (+ s 4) m6), 219309#(not (<= m6 (+ s 1))), 219311#(<= (+ s 4) t)] [2022-03-15 21:25:38,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 21:25:38,484 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:25:38,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 21:25:38,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-15 21:25:38,485 INFO L87 Difference]: Start difference. First operand 44292 states and 203946 transitions. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 11 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:25:40,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:25:40,043 INFO L93 Difference]: Finished difference Result 93151 states and 388804 transitions. [2022-03-15 21:25:40,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 21:25:40,044 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 11 states have internal predecessors, (88), 0 states have call successors, (0), 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 39 [2022-03-15 21:25:40,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:25:40,957 INFO L225 Difference]: With dead ends: 93151 [2022-03-15 21:25:40,957 INFO L226 Difference]: Without dead ends: 93151 [2022-03-15 21:25:40,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 117 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2022-03-15 21:25:40,959 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 174 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 21:25:40,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 276 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 21:25:41,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93151 states. [2022-03-15 21:25:43,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93151 to 65518. [2022-03-15 21:25:43,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65518 states, 65517 states have (on average 4.308362715020529) internal successors, (282271), 65517 states have internal predecessors, (282271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:25:44,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65518 states to 65518 states and 282271 transitions. [2022-03-15 21:25:44,480 INFO L78 Accepts]: Start accepts. Automaton has 65518 states and 282271 transitions. Word has length 39 [2022-03-15 21:25:44,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:25:44,480 INFO L470 AbstractCegarLoop]: Abstraction has 65518 states and 282271 transitions. [2022-03-15 21:25:44,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 11 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:25:44,481 INFO L276 IsEmpty]: Start isEmpty. Operand 65518 states and 282271 transitions. [2022-03-15 21:25:44,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 21:25:44,724 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:25:44,724 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] [2022-03-15 21:25:44,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 21:25:44,724 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 21:25:44,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:25:44,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1080654025, now seen corresponding path program 3 times [2022-03-15 21:25:44,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:25:44,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800335733] [2022-03-15 21:25:44,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:25:44,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:25:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:25:44,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:25:44,812 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:25:44,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800335733] [2022-03-15 21:25:44,812 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800335733] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:25:44,812 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:25:44,813 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 21:25:44,813 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1861497913] [2022-03-15 21:25:44,813 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:25:44,820 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:25:44,862 INFO L252 McrAutomatonBuilder]: Finished intersection with 159 states and 326 transitions. [2022-03-15 21:25:44,863 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:25:45,867 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [443528#(not (<= m4 s)), 443529#(<= s (+ t 1)), 443531#(<= (+ 5 s) t), 443530#(<= (+ 5 s) m4)] [2022-03-15 21:25:45,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 21:25:45,868 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:25:45,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 21:25:45,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-03-15 21:25:45,869 INFO L87 Difference]: Start difference. First operand 65518 states and 282271 transitions. Second operand has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:25:47,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:25:47,206 INFO L93 Difference]: Finished difference Result 90701 states and 361156 transitions. [2022-03-15 21:25:47,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 21:25:47,207 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 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 39 [2022-03-15 21:25:47,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:25:47,993 INFO L225 Difference]: With dead ends: 90701 [2022-03-15 21:25:47,993 INFO L226 Difference]: Without dead ends: 90701 [2022-03-15 21:25:47,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2022-03-15 21:25:47,994 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 168 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 21:25:47,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 286 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 21:25:48,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90701 states. [2022-03-15 21:25:50,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90701 to 75942. [2022-03-15 21:25:50,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75942 states, 75941 states have (on average 4.024110822875653) internal successors, (305595), 75941 states have internal predecessors, (305595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:25:51,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75942 states to 75942 states and 305595 transitions. [2022-03-15 21:25:51,177 INFO L78 Accepts]: Start accepts. Automaton has 75942 states and 305595 transitions. Word has length 39 [2022-03-15 21:25:51,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:25:51,177 INFO L470 AbstractCegarLoop]: Abstraction has 75942 states and 305595 transitions. [2022-03-15 21:25:51,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:25:51,177 INFO L276 IsEmpty]: Start isEmpty. Operand 75942 states and 305595 transitions. [2022-03-15 21:25:51,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 21:25:51,400 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:25:51,400 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] [2022-03-15 21:25:51,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 21:25:51,400 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 21:25:51,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:25:51,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1365097677, now seen corresponding path program 4 times [2022-03-15 21:25:51,401 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:25:51,402 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630114756] [2022-03-15 21:25:51,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:25:51,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:25:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:25:51,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:25:51,457 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:25:51,457 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630114756] [2022-03-15 21:25:51,457 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630114756] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:25:51,457 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:25:51,457 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 21:25:51,458 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [540951258] [2022-03-15 21:25:51,458 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:25:51,461 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:25:51,843 INFO L252 McrAutomatonBuilder]: Finished intersection with 264 states and 580 transitions. [2022-03-15 21:25:51,844 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:25:52,974 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [686137#(<= (+ 2 s) m3), 686138#(<= (+ 2 s) t)] [2022-03-15 21:25:52,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 21:25:52,974 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:25:52,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 21:25:52,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-15 21:25:52,975 INFO L87 Difference]: Start difference. First operand 75942 states and 305595 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:25:54,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:25:54,615 INFO L93 Difference]: Finished difference Result 135187 states and 481800 transitions. [2022-03-15 21:25:54,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 21:25:54,615 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 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 39 [2022-03-15 21:25:54,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:25:55,249 INFO L225 Difference]: With dead ends: 135187 [2022-03-15 21:25:55,250 INFO L226 Difference]: Without dead ends: 135187 [2022-03-15 21:25:55,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 222 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-03-15 21:25:55,251 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 94 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 21:25:55,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 114 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 21:25:55,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135187 states. [2022-03-15 21:25:58,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135187 to 91718. [2022-03-15 21:25:58,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91718 states, 91717 states have (on average 3.667989576632467) internal successors, (336417), 91717 states have internal predecessors, (336417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:25:59,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91718 states to 91718 states and 336417 transitions. [2022-03-15 21:25:59,247 INFO L78 Accepts]: Start accepts. Automaton has 91718 states and 336417 transitions. Word has length 39 [2022-03-15 21:25:59,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:25:59,247 INFO L470 AbstractCegarLoop]: Abstraction has 91718 states and 336417 transitions. [2022-03-15 21:25:59,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:25:59,248 INFO L276 IsEmpty]: Start isEmpty. Operand 91718 states and 336417 transitions. [2022-03-15 21:25:59,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 21:25:59,475 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:25:59,475 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] [2022-03-15 21:25:59,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 21:25:59,475 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 21:25:59,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:25:59,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1944671379, now seen corresponding path program 5 times [2022-03-15 21:25:59,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:25:59,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164725455] [2022-03-15 21:25:59,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:25:59,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:25:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:25:59,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:25:59,600 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:25:59,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164725455] [2022-03-15 21:25:59,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164725455] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:25:59,602 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:25:59,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 21:25:59,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1641489729] [2022-03-15 21:25:59,602 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:25:59,606 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:25:59,653 INFO L252 McrAutomatonBuilder]: Finished intersection with 273 states and 593 transitions. [2022-03-15 21:25:59,653 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:26:02,228 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 21:26:02,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 21:26:02,229 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:26:02,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 21:26:02,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-03-15 21:26:02,235 INFO L87 Difference]: Start difference. First operand 91718 states and 336417 transitions. Second operand has 6 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:03,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:26:03,511 INFO L93 Difference]: Finished difference Result 139878 states and 511364 transitions. [2022-03-15 21:26:03,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 21:26:03,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 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 39 [2022-03-15 21:26:03,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:26:04,101 INFO L225 Difference]: With dead ends: 139878 [2022-03-15 21:26:04,101 INFO L226 Difference]: Without dead ends: 92220 [2022-03-15 21:26:04,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-03-15 21:26:04,102 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 58 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:26:04,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 26 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:26:04,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92220 states. [2022-03-15 21:26:06,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92220 to 92214. [2022-03-15 21:26:06,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92214 states, 92213 states have (on average 3.51603353106395) internal successors, (324224), 92213 states have internal predecessors, (324224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:07,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92214 states to 92214 states and 324224 transitions. [2022-03-15 21:26:07,420 INFO L78 Accepts]: Start accepts. Automaton has 92214 states and 324224 transitions. Word has length 39 [2022-03-15 21:26:07,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:26:07,421 INFO L470 AbstractCegarLoop]: Abstraction has 92214 states and 324224 transitions. [2022-03-15 21:26:07,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:07,421 INFO L276 IsEmpty]: Start isEmpty. Operand 92214 states and 324224 transitions. [2022-03-15 21:26:07,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 21:26:07,662 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:26:07,662 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] [2022-03-15 21:26:07,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-15 21:26:07,662 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 21:26:07,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:26:07,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2044681757, now seen corresponding path program 6 times [2022-03-15 21:26:07,664 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:26:07,664 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94360656] [2022-03-15 21:26:07,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:26:07,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:26:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:26:07,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:26:07,737 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:26:07,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94360656] [2022-03-15 21:26:07,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94360656] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:26:07,737 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:26:07,737 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 21:26:07,737 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1894986776] [2022-03-15 21:26:07,737 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:26:07,742 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:26:07,794 INFO L252 McrAutomatonBuilder]: Finished intersection with 220 states and 473 transitions. [2022-03-15 21:26:07,794 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:26:09,204 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1329090#(<= (+ s 4) t), 1329089#(<= (+ s 4) m4)] [2022-03-15 21:26:09,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 21:26:09,205 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:26:09,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 21:26:09,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-03-15 21:26:09,205 INFO L87 Difference]: Start difference. First operand 92214 states and 324224 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:10,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:26:10,622 INFO L93 Difference]: Finished difference Result 143759 states and 480494 transitions. [2022-03-15 21:26:10,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 21:26:10,623 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 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 39 [2022-03-15 21:26:10,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:26:11,583 INFO L225 Difference]: With dead ends: 143759 [2022-03-15 21:26:11,583 INFO L226 Difference]: Without dead ends: 143183 [2022-03-15 21:26:11,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2022-03-15 21:26:11,584 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 149 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 21:26:11,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 187 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 21:26:11,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143183 states. [2022-03-15 21:26:14,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143183 to 100946. [2022-03-15 21:26:14,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100946 states, 100945 states have (on average 3.4800336817078605) internal successors, (351292), 100945 states have internal predecessors, (351292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:15,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100946 states to 100946 states and 351292 transitions. [2022-03-15 21:26:15,881 INFO L78 Accepts]: Start accepts. Automaton has 100946 states and 351292 transitions. Word has length 39 [2022-03-15 21:26:15,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:26:15,881 INFO L470 AbstractCegarLoop]: Abstraction has 100946 states and 351292 transitions. [2022-03-15 21:26:15,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:15,881 INFO L276 IsEmpty]: Start isEmpty. Operand 100946 states and 351292 transitions. [2022-03-15 21:26:16,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 21:26:16,234 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:26:16,234 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] [2022-03-15 21:26:16,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-15 21:26:16,234 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 21:26:16,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:26:16,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2046789369, now seen corresponding path program 7 times [2022-03-15 21:26:16,237 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:26:16,237 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811955922] [2022-03-15 21:26:16,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:26:16,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:26:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:26:16,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:26:16,294 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:26:16,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811955922] [2022-03-15 21:26:16,294 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811955922] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:26:16,294 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:26:16,294 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 21:26:16,294 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [934061245] [2022-03-15 21:26:16,294 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:26:16,301 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:26:16,366 INFO L252 McrAutomatonBuilder]: Finished intersection with 281 states and 634 transitions. [2022-03-15 21:26:16,366 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:26:17,903 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1674761#(<= (+ 2 s) t), 1674760#(<= (+ 2 s) m1)] [2022-03-15 21:26:17,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 21:26:17,904 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:26:17,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 21:26:17,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-15 21:26:17,908 INFO L87 Difference]: Start difference. First operand 100946 states and 351292 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:18,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:26:18,919 INFO L93 Difference]: Finished difference Result 93776 states and 279079 transitions. [2022-03-15 21:26:18,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 21:26:18,920 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-15 21:26:18,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:26:19,309 INFO L225 Difference]: With dead ends: 93776 [2022-03-15 21:26:19,309 INFO L226 Difference]: Without dead ends: 92108 [2022-03-15 21:26:19,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 239 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-03-15 21:26:19,316 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 88 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 21:26:19,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 89 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 21:26:19,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92108 states. [2022-03-15 21:26:21,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92108 to 68347. [2022-03-15 21:26:21,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68347 states, 68346 states have (on average 3.0627981154712787) internal successors, (209330), 68346 states have internal predecessors, (209330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:21,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68347 states to 68347 states and 209330 transitions. [2022-03-15 21:26:21,640 INFO L78 Accepts]: Start accepts. Automaton has 68347 states and 209330 transitions. Word has length 39 [2022-03-15 21:26:21,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:26:21,640 INFO L470 AbstractCegarLoop]: Abstraction has 68347 states and 209330 transitions. [2022-03-15 21:26:21,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:21,640 INFO L276 IsEmpty]: Start isEmpty. Operand 68347 states and 209330 transitions. [2022-03-15 21:26:21,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 21:26:21,800 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:26:21,800 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] [2022-03-15 21:26:21,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-15 21:26:21,801 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 21:26:21,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:26:21,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1922072055, now seen corresponding path program 8 times [2022-03-15 21:26:21,802 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:26:21,802 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877520020] [2022-03-15 21:26:21,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:26:21,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:26:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:26:21,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:26:21,870 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:26:21,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877520020] [2022-03-15 21:26:21,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877520020] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:26:21,870 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:26:21,870 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-15 21:26:21,870 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [377417978] [2022-03-15 21:26:21,870 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:26:21,873 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:26:21,915 INFO L252 McrAutomatonBuilder]: Finished intersection with 261 states and 567 transitions. [2022-03-15 21:26:21,915 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:26:22,998 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1905246#(<= (+ 3 s) m4), 1905247#(<= (+ 3 s) t)] [2022-03-15 21:26:22,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 21:26:22,999 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:26:22,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 21:26:22,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-15 21:26:23,000 INFO L87 Difference]: Start difference. First operand 68347 states and 209330 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:24,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:26:24,158 INFO L93 Difference]: Finished difference Result 89504 states and 250394 transitions. [2022-03-15 21:26:24,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 21:26:24,158 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 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 39 [2022-03-15 21:26:24,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:26:24,416 INFO L225 Difference]: With dead ends: 89504 [2022-03-15 21:26:24,417 INFO L226 Difference]: Without dead ends: 87638 [2022-03-15 21:26:24,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-03-15 21:26:24,417 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 131 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 21:26:24,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 209 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 21:26:24,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87638 states. [2022-03-15 21:26:26,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87638 to 59879. [2022-03-15 21:26:26,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59879 states, 59878 states have (on average 2.9332977053341796) internal successors, (175640), 59878 states have internal predecessors, (175640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:26,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59879 states to 59879 states and 175640 transitions. [2022-03-15 21:26:26,471 INFO L78 Accepts]: Start accepts. Automaton has 59879 states and 175640 transitions. Word has length 39 [2022-03-15 21:26:26,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:26:26,471 INFO L470 AbstractCegarLoop]: Abstraction has 59879 states and 175640 transitions. [2022-03-15 21:26:26,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:26,472 INFO L276 IsEmpty]: Start isEmpty. Operand 59879 states and 175640 transitions. [2022-03-15 21:26:26,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 21:26:26,596 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:26:26,596 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] [2022-03-15 21:26:26,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-15 21:26:26,597 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 21:26:26,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:26:26,597 INFO L85 PathProgramCache]: Analyzing trace with hash 374133093, now seen corresponding path program 9 times [2022-03-15 21:26:26,598 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:26:26,598 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973477452] [2022-03-15 21:26:26,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:26:26,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:26:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:26:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:26:26,687 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:26:26,687 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973477452] [2022-03-15 21:26:26,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973477452] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:26:26,687 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:26:26,687 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-15 21:26:26,687 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2107115439] [2022-03-15 21:26:26,687 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:26:26,690 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:26:26,711 INFO L252 McrAutomatonBuilder]: Finished intersection with 134 states and 242 transitions. [2022-03-15 21:26:26,711 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:26:27,167 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [2114534#(<= (+ 5 s) m4), 2114535#(<= (+ 5 s) t)] [2022-03-15 21:26:27,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 21:26:27,168 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:26:27,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 21:26:27,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-03-15 21:26:27,169 INFO L87 Difference]: Start difference. First operand 59879 states and 175640 transitions. Second operand has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 13 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:28,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:26:28,495 INFO L93 Difference]: Finished difference Result 76128 states and 215634 transitions. [2022-03-15 21:26:28,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 21:26:28,504 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 13 states have internal predecessors, (109), 0 states have call successors, (0), 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 39 [2022-03-15 21:26:28,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:26:28,744 INFO L225 Difference]: With dead ends: 76128 [2022-03-15 21:26:28,744 INFO L226 Difference]: Without dead ends: 75771 [2022-03-15 21:26:28,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=536, Unknown=0, NotChecked=0, Total=812 [2022-03-15 21:26:28,745 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 253 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 21:26:28,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 310 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 21:26:28,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75771 states. [2022-03-15 21:26:30,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75771 to 60848. [2022-03-15 21:26:30,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60848 states, 60847 states have (on average 2.889526188637073) internal successors, (175819), 60847 states have internal predecessors, (175819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:30,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60848 states to 60848 states and 175819 transitions. [2022-03-15 21:26:30,418 INFO L78 Accepts]: Start accepts. Automaton has 60848 states and 175819 transitions. Word has length 39 [2022-03-15 21:26:30,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:26:30,418 INFO L470 AbstractCegarLoop]: Abstraction has 60848 states and 175819 transitions. [2022-03-15 21:26:30,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 13 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:30,418 INFO L276 IsEmpty]: Start isEmpty. Operand 60848 states and 175819 transitions. [2022-03-15 21:26:30,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 21:26:30,842 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:26:30,842 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] [2022-03-15 21:26:30,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-15 21:26:30,842 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 21:26:30,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:26:30,842 INFO L85 PathProgramCache]: Analyzing trace with hash 2137324373, now seen corresponding path program 10 times [2022-03-15 21:26:30,865 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:26:30,865 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926245029] [2022-03-15 21:26:30,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:26:30,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:26:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:26:30,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:26:30,960 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:26:30,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926245029] [2022-03-15 21:26:30,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926245029] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:26:30,960 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:26:30,960 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-15 21:26:30,960 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2014772201] [2022-03-15 21:26:30,961 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:26:30,964 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:26:30,985 INFO L252 McrAutomatonBuilder]: Finished intersection with 149 states and 275 transitions. [2022-03-15 21:26:30,985 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:26:31,518 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [2312400#(<= (+ s 4) m1), 2312401#(<= (+ s 4) t)] [2022-03-15 21:26:31,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 21:26:31,518 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:26:31,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 21:26:31,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-15 21:26:31,519 INFO L87 Difference]: Start difference. First operand 60848 states and 175819 transitions. Second operand has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:32,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:26:32,681 INFO L93 Difference]: Finished difference Result 88857 states and 238046 transitions. [2022-03-15 21:26:32,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 21:26:32,681 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 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 39 [2022-03-15 21:26:32,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:26:32,904 INFO L225 Difference]: With dead ends: 88857 [2022-03-15 21:26:32,905 INFO L226 Difference]: Without dead ends: 75404 [2022-03-15 21:26:32,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2022-03-15 21:26:32,905 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 172 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 21:26:32,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 203 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 21:26:33,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75404 states. [2022-03-15 21:26:34,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75404 to 54173. [2022-03-15 21:26:34,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54173 states, 54172 states have (on average 2.7908329026065126) internal successors, (151185), 54172 states have internal predecessors, (151185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:34,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54173 states to 54173 states and 151185 transitions. [2022-03-15 21:26:34,464 INFO L78 Accepts]: Start accepts. Automaton has 54173 states and 151185 transitions. Word has length 39 [2022-03-15 21:26:34,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:26:34,464 INFO L470 AbstractCegarLoop]: Abstraction has 54173 states and 151185 transitions. [2022-03-15 21:26:34,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:34,464 INFO L276 IsEmpty]: Start isEmpty. Operand 54173 states and 151185 transitions. [2022-03-15 21:26:34,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 21:26:34,575 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:26:34,575 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] [2022-03-15 21:26:34,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-15 21:26:34,575 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 21:26:34,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:26:34,575 INFO L85 PathProgramCache]: Analyzing trace with hash -681079787, now seen corresponding path program 11 times [2022-03-15 21:26:34,586 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:26:34,586 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678690181] [2022-03-15 21:26:34,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:26:34,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:26:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:26:34,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:26:34,695 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:26:34,695 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678690181] [2022-03-15 21:26:34,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678690181] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:26:34,696 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:26:34,696 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-15 21:26:34,696 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1402682071] [2022-03-15 21:26:34,696 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:26:34,700 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:26:34,724 INFO L252 McrAutomatonBuilder]: Finished intersection with 124 states and 216 transitions. [2022-03-15 21:26:34,724 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:26:35,125 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [2509637#(<= (+ 5 s) m5), 2509638#(<= (+ 5 s) t)] [2022-03-15 21:26:35,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 21:26:35,126 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:26:35,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 21:26:35,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-03-15 21:26:35,127 INFO L87 Difference]: Start difference. First operand 54173 states and 151185 transitions. Second operand has 14 states, 14 states have (on average 7.714285714285714) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:36,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:26:36,322 INFO L93 Difference]: Finished difference Result 71961 states and 192107 transitions. [2022-03-15 21:26:36,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 21:26:36,323 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.714285714285714) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-15 21:26:36,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:26:36,510 INFO L225 Difference]: With dead ends: 71961 [2022-03-15 21:26:36,510 INFO L226 Difference]: Without dead ends: 67715 [2022-03-15 21:26:36,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=276, Invalid=536, Unknown=0, NotChecked=0, Total=812 [2022-03-15 21:26:36,511 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 228 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 21:26:36,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 385 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 21:26:36,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67715 states. [2022-03-15 21:26:37,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67715 to 50278. [2022-03-15 21:26:37,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50278 states, 50277 states have (on average 2.756310042365296) internal successors, (138579), 50277 states have internal predecessors, (138579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:37,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50278 states to 50278 states and 138579 transitions. [2022-03-15 21:26:37,897 INFO L78 Accepts]: Start accepts. Automaton has 50278 states and 138579 transitions. Word has length 39 [2022-03-15 21:26:37,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:26:37,898 INFO L470 AbstractCegarLoop]: Abstraction has 50278 states and 138579 transitions. [2022-03-15 21:26:37,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.714285714285714) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:37,898 INFO L276 IsEmpty]: Start isEmpty. Operand 50278 states and 138579 transitions. [2022-03-15 21:26:37,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 21:26:37,999 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:26:37,999 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] [2022-03-15 21:26:37,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-15 21:26:37,999 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 21:26:38,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:26:38,000 INFO L85 PathProgramCache]: Analyzing trace with hash -154743643, now seen corresponding path program 12 times [2022-03-15 21:26:38,000 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:26:38,000 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317806948] [2022-03-15 21:26:38,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:26:38,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:26:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:26:38,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:26:38,074 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:26:38,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317806948] [2022-03-15 21:26:38,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317806948] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:26:38,074 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:26:38,075 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-15 21:26:38,075 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1082998808] [2022-03-15 21:26:38,075 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:26:38,078 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:26:38,093 INFO L252 McrAutomatonBuilder]: Finished intersection with 110 states and 182 transitions. [2022-03-15 21:26:38,094 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:26:38,421 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [2682199#(<= (+ 5 s) t), 2682196#(<= (+ s 4) m3), 2682197#(<= (+ s 4) t), 2682198#(<= (+ 5 s) m3)] [2022-03-15 21:26:38,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 21:26:38,421 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:26:38,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 21:26:38,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-03-15 21:26:38,422 INFO L87 Difference]: Start difference. First operand 50278 states and 138579 transitions. Second operand has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 13 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:39,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:26:39,538 INFO L93 Difference]: Finished difference Result 68539 states and 170797 transitions. [2022-03-15 21:26:39,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 21:26:39,538 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 13 states have internal predecessors, (106), 0 states have call successors, (0), 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 39 [2022-03-15 21:26:39,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:26:39,687 INFO L225 Difference]: With dead ends: 68539 [2022-03-15 21:26:39,687 INFO L226 Difference]: Without dead ends: 59945 [2022-03-15 21:26:39,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=536, Unknown=0, NotChecked=0, Total=812 [2022-03-15 21:26:39,688 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 253 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 21:26:39,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 338 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 21:26:39,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59945 states. [2022-03-15 21:26:40,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59945 to 41400. [2022-03-15 21:26:40,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41400 states, 41399 states have (on average 2.608758665668253) internal successors, (108000), 41399 states have internal predecessors, (108000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:40,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41400 states to 41400 states and 108000 transitions. [2022-03-15 21:26:40,670 INFO L78 Accepts]: Start accepts. Automaton has 41400 states and 108000 transitions. Word has length 39 [2022-03-15 21:26:40,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:26:40,670 INFO L470 AbstractCegarLoop]: Abstraction has 41400 states and 108000 transitions. [2022-03-15 21:26:40,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 13 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:40,670 INFO L276 IsEmpty]: Start isEmpty. Operand 41400 states and 108000 transitions. [2022-03-15 21:26:40,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 21:26:40,743 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:26:40,743 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] [2022-03-15 21:26:40,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-15 21:26:40,743 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 21:26:40,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:26:40,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1453745827, now seen corresponding path program 13 times [2022-03-15 21:26:40,744 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:26:40,744 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752111096] [2022-03-15 21:26:40,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:26:40,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:26:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:26:40,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:26:40,828 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:26:40,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752111096] [2022-03-15 21:26:40,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752111096] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:26:40,828 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:26:40,828 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-15 21:26:40,828 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2043806733] [2022-03-15 21:26:40,828 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:26:40,832 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:26:41,067 INFO L252 McrAutomatonBuilder]: Finished intersection with 133 states and 240 transitions. [2022-03-15 21:26:41,067 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:26:41,520 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [2833581#(<= (+ 5 s) m1), 2833582#(<= s t)] [2022-03-15 21:26:41,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 21:26:41,521 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:26:41,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 21:26:41,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-03-15 21:26:41,521 INFO L87 Difference]: Start difference. First operand 41400 states and 108000 transitions. Second operand has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:42,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:26:42,405 INFO L93 Difference]: Finished difference Result 53817 states and 132289 transitions. [2022-03-15 21:26:42,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 21:26:42,405 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 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 39 [2022-03-15 21:26:42,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:26:42,511 INFO L225 Difference]: With dead ends: 53817 [2022-03-15 21:26:42,512 INFO L226 Difference]: Without dead ends: 45885 [2022-03-15 21:26:42,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=276, Invalid=536, Unknown=0, NotChecked=0, Total=812 [2022-03-15 21:26:42,512 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 195 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 21:26:42,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 348 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1359 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 21:26:42,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45885 states. [2022-03-15 21:26:43,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45885 to 36579. [2022-03-15 21:26:43,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36579 states, 36578 states have (on average 2.6107496309256932) internal successors, (95496), 36578 states have internal predecessors, (95496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:43,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36579 states to 36579 states and 95496 transitions. [2022-03-15 21:26:43,556 INFO L78 Accepts]: Start accepts. Automaton has 36579 states and 95496 transitions. Word has length 39 [2022-03-15 21:26:43,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:26:43,556 INFO L470 AbstractCegarLoop]: Abstraction has 36579 states and 95496 transitions. [2022-03-15 21:26:43,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:43,556 INFO L276 IsEmpty]: Start isEmpty. Operand 36579 states and 95496 transitions. [2022-03-15 21:26:43,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 21:26:43,626 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:26:43,626 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] [2022-03-15 21:26:43,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-15 21:26:43,626 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 21:26:43,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:26:43,627 INFO L85 PathProgramCache]: Analyzing trace with hash -455878033, now seen corresponding path program 14 times [2022-03-15 21:26:43,627 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:26:43,627 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349529937] [2022-03-15 21:26:43,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:26:43,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:26:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:26:43,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:26:43,715 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:26:43,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349529937] [2022-03-15 21:26:43,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349529937] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:26:43,715 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:26:43,716 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-15 21:26:43,716 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [660472287] [2022-03-15 21:26:43,716 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:26:43,720 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:26:43,751 INFO L252 McrAutomatonBuilder]: Finished intersection with 162 states and 319 transitions. [2022-03-15 21:26:43,751 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:26:44,331 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [2960601#(<= (+ 5 s) m6), 2960600#(<= s t)] [2022-03-15 21:26:44,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 21:26:44,331 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:26:44,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 21:26:44,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-03-15 21:26:44,331 INFO L87 Difference]: Start difference. First operand 36579 states and 95496 transitions. Second operand has 14 states, 14 states have (on average 7.928571428571429) internal successors, (111), 13 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:45,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:26:45,181 INFO L93 Difference]: Finished difference Result 47562 states and 117450 transitions. [2022-03-15 21:26:45,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 21:26:45,181 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.928571428571429) internal successors, (111), 13 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-15 21:26:45,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:26:45,456 INFO L225 Difference]: With dead ends: 47562 [2022-03-15 21:26:45,456 INFO L226 Difference]: Without dead ends: 44997 [2022-03-15 21:26:45,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=276, Invalid=536, Unknown=0, NotChecked=0, Total=812 [2022-03-15 21:26:45,457 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 204 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 21:26:45,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 424 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1399 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 21:26:45,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44997 states. [2022-03-15 21:26:45,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44997 to 31588. [2022-03-15 21:26:45,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31588 states, 31587 states have (on average 2.6007534745306615) internal successors, (82150), 31587 states have internal predecessors, (82150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:46,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31588 states to 31588 states and 82150 transitions. [2022-03-15 21:26:46,217 INFO L78 Accepts]: Start accepts. Automaton has 31588 states and 82150 transitions. Word has length 39 [2022-03-15 21:26:46,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:26:46,217 INFO L470 AbstractCegarLoop]: Abstraction has 31588 states and 82150 transitions. [2022-03-15 21:26:46,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.928571428571429) internal successors, (111), 13 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:46,217 INFO L276 IsEmpty]: Start isEmpty. Operand 31588 states and 82150 transitions. [2022-03-15 21:26:46,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 21:26:46,270 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:26:46,270 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] [2022-03-15 21:26:46,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-15 21:26:46,271 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 21:26:46,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:26:46,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1987519331, now seen corresponding path program 15 times [2022-03-15 21:26:46,272 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:26:46,272 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229718757] [2022-03-15 21:26:46,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:26:46,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:26:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:26:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:26:46,312 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:26:46,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229718757] [2022-03-15 21:26:46,313 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229718757] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:26:46,313 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:26:46,313 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 21:26:46,313 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1904958004] [2022-03-15 21:26:46,313 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:26:46,316 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:26:46,366 INFO L252 McrAutomatonBuilder]: Finished intersection with 310 states and 711 transitions. [2022-03-15 21:26:46,366 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:26:47,418 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3071375#(<= s t)] [2022-03-15 21:26:47,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 21:26:47,419 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:26:47,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 21:26:47,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-15 21:26:47,420 INFO L87 Difference]: Start difference. First operand 31588 states and 82150 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:47,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:26:47,796 INFO L93 Difference]: Finished difference Result 37404 states and 87150 transitions. [2022-03-15 21:26:47,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 21:26:47,796 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-15 21:26:47,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:26:47,866 INFO L225 Difference]: With dead ends: 37404 [2022-03-15 21:26:47,867 INFO L226 Difference]: Without dead ends: 34787 [2022-03-15 21:26:47,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 268 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-03-15 21:26:47,867 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 51 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:26:47,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 52 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:26:47,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34787 states. [2022-03-15 21:26:48,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34787 to 18687. [2022-03-15 21:26:48,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18687 states, 18686 states have (on average 2.374397944985551) internal successors, (44368), 18686 states have internal predecessors, (44368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:48,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18687 states to 18687 states and 44368 transitions. [2022-03-15 21:26:48,247 INFO L78 Accepts]: Start accepts. Automaton has 18687 states and 44368 transitions. Word has length 39 [2022-03-15 21:26:48,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:26:48,248 INFO L470 AbstractCegarLoop]: Abstraction has 18687 states and 44368 transitions. [2022-03-15 21:26:48,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:48,248 INFO L276 IsEmpty]: Start isEmpty. Operand 18687 states and 44368 transitions. [2022-03-15 21:26:48,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 21:26:48,273 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:26:48,273 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] [2022-03-15 21:26:48,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-15 21:26:48,273 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 21:26:48,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:26:48,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1325846797, now seen corresponding path program 16 times [2022-03-15 21:26:48,274 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:26:48,274 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069462107] [2022-03-15 21:26:48,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:26:48,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:26:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:26:48,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:26:48,315 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:26:48,315 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069462107] [2022-03-15 21:26:48,315 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069462107] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:26:48,316 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:26:48,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 21:26:48,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1068354630] [2022-03-15 21:26:48,316 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:26:48,320 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:26:48,371 INFO L252 McrAutomatonBuilder]: Finished intersection with 251 states and 546 transitions. [2022-03-15 21:26:48,371 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:26:49,290 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3146163#(<= s t)] [2022-03-15 21:26:49,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 21:26:49,291 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:26:49,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 21:26:49,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-15 21:26:49,291 INFO L87 Difference]: Start difference. First operand 18687 states and 44368 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:49,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:26:49,530 INFO L93 Difference]: Finished difference Result 17350 states and 34608 transitions. [2022-03-15 21:26:49,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 21:26:49,530 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 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 39 [2022-03-15 21:26:49,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:26:49,552 INFO L225 Difference]: With dead ends: 17350 [2022-03-15 21:26:49,552 INFO L226 Difference]: Without dead ends: 12560 [2022-03-15 21:26:49,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-03-15 21:26:49,553 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 85 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 21:26:49,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 99 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 21:26:49,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12560 states. [2022-03-15 21:26:49,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12560 to 7439. [2022-03-15 21:26:49,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7439 states, 7438 states have (on average 2.0758268351707447) internal successors, (15440), 7438 states have internal predecessors, (15440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:49,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7439 states to 7439 states and 15440 transitions. [2022-03-15 21:26:49,691 INFO L78 Accepts]: Start accepts. Automaton has 7439 states and 15440 transitions. Word has length 39 [2022-03-15 21:26:49,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:26:49,691 INFO L470 AbstractCegarLoop]: Abstraction has 7439 states and 15440 transitions. [2022-03-15 21:26:49,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:49,691 INFO L276 IsEmpty]: Start isEmpty. Operand 7439 states and 15440 transitions. [2022-03-15 21:26:49,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 21:26:49,701 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:26:49,701 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] [2022-03-15 21:26:49,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-15 21:26:49,701 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 21:26:49,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:26:49,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1923589675, now seen corresponding path program 17 times [2022-03-15 21:26:49,702 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:26:49,702 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659946717] [2022-03-15 21:26:49,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:26:49,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:26:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:26:49,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:26:49,764 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:26:49,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659946717] [2022-03-15 21:26:49,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659946717] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:26:49,765 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:26:49,765 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-15 21:26:49,765 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1978194962] [2022-03-15 21:26:49,765 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:26:49,769 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:26:49,789 INFO L252 McrAutomatonBuilder]: Finished intersection with 114 states and 193 transitions. [2022-03-15 21:26:49,789 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:26:50,078 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3178408#(<= s t)] [2022-03-15 21:26:50,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 21:26:50,078 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:26:50,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 21:26:50,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-03-15 21:26:50,079 INFO L87 Difference]: Start difference. First operand 7439 states and 15440 transitions. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:50,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:26:50,466 INFO L93 Difference]: Finished difference Result 8432 states and 15652 transitions. [2022-03-15 21:26:50,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 21:26:50,467 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 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 39 [2022-03-15 21:26:50,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:26:50,475 INFO L225 Difference]: With dead ends: 8432 [2022-03-15 21:26:50,476 INFO L226 Difference]: Without dead ends: 6767 [2022-03-15 21:26:50,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2022-03-15 21:26:50,476 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 141 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 21:26:50,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 165 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 21:26:50,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6767 states. [2022-03-15 21:26:50,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6767 to 4082. [2022-03-15 21:26:50,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4082 states, 4081 states have (on average 2.031364861553541) internal successors, (8290), 4081 states have internal predecessors, (8290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:50,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4082 states to 4082 states and 8290 transitions. [2022-03-15 21:26:50,534 INFO L78 Accepts]: Start accepts. Automaton has 4082 states and 8290 transitions. Word has length 39 [2022-03-15 21:26:50,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:26:50,535 INFO L470 AbstractCegarLoop]: Abstraction has 4082 states and 8290 transitions. [2022-03-15 21:26:50,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:50,535 INFO L276 IsEmpty]: Start isEmpty. Operand 4082 states and 8290 transitions. [2022-03-15 21:26:50,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 21:26:50,539 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:26:50,539 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] [2022-03-15 21:26:50,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-15 21:26:50,539 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 21:26:50,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:26:50,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2075698709, now seen corresponding path program 18 times [2022-03-15 21:26:50,540 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:26:50,541 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723904657] [2022-03-15 21:26:50,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:26:50,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:26:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:26:50,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:26:50,607 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:26:50,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723904657] [2022-03-15 21:26:50,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723904657] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:26:50,607 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:26:50,608 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-15 21:26:50,608 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1362552981] [2022-03-15 21:26:50,608 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:26:50,612 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:26:50,633 INFO L252 McrAutomatonBuilder]: Finished intersection with 122 states and 209 transitions. [2022-03-15 21:26:50,633 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:26:50,949 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3195028#(<= s t)] [2022-03-15 21:26:50,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 21:26:50,950 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:26:50,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 21:26:50,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-15 21:26:50,950 INFO L87 Difference]: Start difference. First operand 4082 states and 8290 transitions. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:51,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:26:51,303 INFO L93 Difference]: Finished difference Result 4086 states and 7362 transitions. [2022-03-15 21:26:51,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 21:26:51,303 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 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 39 [2022-03-15 21:26:51,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:26:51,305 INFO L225 Difference]: With dead ends: 4086 [2022-03-15 21:26:51,305 INFO L226 Difference]: Without dead ends: 799 [2022-03-15 21:26:51,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2022-03-15 21:26:51,305 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 117 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 21:26:51,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 166 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 21:26:51,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-03-15 21:26:51,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 667. [2022-03-15 21:26:51,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 666 states have (on average 1.7177177177177176) internal successors, (1144), 666 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:51,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1144 transitions. [2022-03-15 21:26:51,312 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1144 transitions. Word has length 39 [2022-03-15 21:26:51,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:26:51,312 INFO L470 AbstractCegarLoop]: Abstraction has 667 states and 1144 transitions. [2022-03-15 21:26:51,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:51,312 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1144 transitions. [2022-03-15 21:26:51,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 21:26:51,313 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:26:51,313 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] [2022-03-15 21:26:51,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-15 21:26:51,313 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-15 21:26:51,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:26:51,313 INFO L85 PathProgramCache]: Analyzing trace with hash 2122937103, now seen corresponding path program 19 times [2022-03-15 21:26:51,314 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:26:51,314 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792927728] [2022-03-15 21:26:51,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:26:51,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:26:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:26:51,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:26:51,393 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:26:51,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792927728] [2022-03-15 21:26:51,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792927728] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:26:51,393 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:26:51,393 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-15 21:26:51,393 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [969709005] [2022-03-15 21:26:51,393 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:26:51,396 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:26:51,412 INFO L252 McrAutomatonBuilder]: Finished intersection with 106 states and 174 transitions. [2022-03-15 21:26:51,412 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:26:51,684 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3200482#(<= s t)] [2022-03-15 21:26:51,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 21:26:51,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:26:51,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 21:26:51,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-03-15 21:26:51,685 INFO L87 Difference]: Start difference. First operand 667 states and 1144 transitions. Second operand has 14 states, 14 states have (on average 7.5) internal successors, (105), 13 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:51,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:26:51,950 INFO L93 Difference]: Finished difference Result 773 states and 1244 transitions. [2022-03-15 21:26:51,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 21:26:51,950 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 13 states have internal predecessors, (105), 0 states have call successors, (0), 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 39 [2022-03-15 21:26:51,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:26:51,950 INFO L225 Difference]: With dead ends: 773 [2022-03-15 21:26:51,950 INFO L226 Difference]: Without dead ends: 0 [2022-03-15 21:26:51,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2022-03-15 21:26:51,951 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 88 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 21:26:51,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 195 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 21:26:51,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-15 21:26:51,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-15 21:26:51,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:51,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-15 21:26:51,951 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2022-03-15 21:26:51,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:26:51,952 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-15 21:26:51,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 13 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:26:51,952 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-15 21:26:51,952 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-15 21:26:51,954 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (6 of 7 remaining) [2022-03-15 21:26:51,955 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (5 of 7 remaining) [2022-03-15 21:26:51,955 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (4 of 7 remaining) [2022-03-15 21:26:51,955 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (3 of 7 remaining) [2022-03-15 21:26:51,955 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION (2 of 7 remaining) [2022-03-15 21:26:51,956 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATION (1 of 7 remaining) [2022-03-15 21:26:51,956 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5INUSE_VIOLATION (0 of 7 remaining) [2022-03-15 21:26:51,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-15 21:26:51,958 INFO L732 BasicCegarLoop]: Path program histogram: [19] [2022-03-15 21:26:51,960 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 21:26:51,960 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 21:26:51,962 INFO L202 PluginConnector]: Adding new model ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 09:26:51 BasicIcfg [2022-03-15 21:26:51,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 21:26:51,963 INFO L158 Benchmark]: Toolchain (without parser) took 85419.08ms. Allocated memory was 185.6MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 143.6MB in the beginning and 4.3GB in the end (delta: -4.1GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. [2022-03-15 21:26:51,963 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.11ms. Allocated memory is still 185.6MB. Free memory is still 144.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 21:26:51,963 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.55ms. Allocated memory is still 185.6MB. Free memory was 143.6MB in the beginning and 142.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 21:26:51,963 INFO L158 Benchmark]: Boogie Preprocessor took 18.66ms. Allocated memory is still 185.6MB. Free memory was 142.1MB in the beginning and 141.0MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 21:26:51,963 INFO L158 Benchmark]: RCFGBuilder took 225.24ms. Allocated memory is still 185.6MB. Free memory was 141.0MB in the beginning and 130.4MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-15 21:26:51,964 INFO L158 Benchmark]: TraceAbstraction took 85146.27ms. Allocated memory was 185.6MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 129.9MB in the beginning and 4.3GB in the end (delta: -4.1GB). Peak memory consumption was 3.6GB. Max. memory is 8.0GB. [2022-03-15 21:26:51,965 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 0.11ms. Allocated memory is still 185.6MB. Free memory is still 144.8MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.55ms. Allocated memory is still 185.6MB. Free memory was 143.6MB in the beginning and 142.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.66ms. Allocated memory is still 185.6MB. Free memory was 142.1MB in the beginning and 141.0MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 225.24ms. Allocated memory is still 185.6MB. Free memory was 141.0MB in the beginning and 130.4MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 85146.27ms. Allocated memory was 185.6MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 129.9MB in the beginning and 4.3GB in the end (delta: -4.1GB). Peak memory consumption was 3.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.2s, 73 PlacesBefore, 65 PlacesAfterwards, 54 TransitionsBefore, 46 TransitionsAfterwards, 1110 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 9 TotalNumberOfCompositions, 3715 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 875, positive: 751, positive conditional: 0, positive unconditional: 751, negative: 124, negative conditional: 0, negative unconditional: 124, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 327, positive: 295, positive conditional: 0, positive unconditional: 295, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 875, positive: 456, positive conditional: 0, positive unconditional: 456, negative: 92, negative conditional: 0, negative unconditional: 92, unknown: 327, unknown conditional: 0, unknown unconditional: 327] , Statistics on independence cache: Total cache size (in pairs): 144, Positive cache size: 122, Positive conditional cache size: 0, Positive unconditional cache size: 122, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22 - 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 - PositiveResult [Line: 110]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 13 procedures, 98 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 85.0s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 19, EmptinessCheckTime: 3.0s, AutomataDifference: 26.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2785 SdHoareTripleChecker+Valid, 7.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2785 mSDsluCounter, 4068 SdHoareTripleChecker+Invalid, 5.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6731 mSDsCounter, 1515 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15123 IncrementalHoareTripleChecker+Invalid, 16638 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1515 mSolverCounterUnsat, 792 mSDtfsCounter, 15123 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3093 GetRequests, 2731 SyntacticMatches, 34 SemanticMatches, 328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1401 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100946occurred in iteration=6, InterpolantAutomatonStates: 300, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 34.1s AutomataMinimizationTime, 19 MinimizatonAttempts, 330149 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 741 NumberOfCodeBlocks, 741 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 722 ConstructedInterpolants, 0 QuantifiedInterpolants, 2346 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-15 21:26:51,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...