/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/clever.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 04:01:52,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 04:01:52,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 04:01:52,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 04:01:52,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 04:01:52,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 04:01:52,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 04:01:52,605 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-01-18 04:01:52,625 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 04:01:52,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 04:01:52,626 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 04:01:52,626 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 04:01:52,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 04:01:52,627 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 04:01:52,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 04:01:52,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 04:01:52,627 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 04:01:52,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 04:01:52,628 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 04:01:52,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 04:01:52,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 04:01:52,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 04:01:52,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 04:01:52,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 04:01:52,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 04:01:52,628 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 04:01:52,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 04:01:52,629 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 04:01:52,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 04:01:52,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 04:01:52,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 04:01:52,629 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 04:01:52,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 04:01:52,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 04:01:52,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 04:01:52,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 04:01:52,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 04:01:52,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 04:01:52,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 04:01:52,630 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 04:01:52,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 04:01:52,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 04:01:52,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 04:01:52,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 04:01:52,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 04:01:52,848 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 04:01:52,849 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 04:01:52,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/clever.wvr.bpl [2022-01-18 04:01:52,850 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/clever.wvr.bpl' [2022-01-18 04:01:52,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 04:01:52,883 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 04:01:52,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 04:01:52,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 04:01:52,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 04:01:52,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:01:52" (1/1) ... [2022-01-18 04:01:52,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:01:52" (1/1) ... [2022-01-18 04:01:52,902 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 04:01:52,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 04:01:52,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 04:01:52,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 04:01:52,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 04:01:52,910 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:01:52" (1/1) ... [2022-01-18 04:01:52,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:01:52" (1/1) ... [2022-01-18 04:01:52,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:01:52" (1/1) ... [2022-01-18 04:01:52,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:01:52" (1/1) ... [2022-01-18 04:01:52,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:01:52" (1/1) ... [2022-01-18 04:01:52,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:01:52" (1/1) ... [2022-01-18 04:01:52,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:01:52" (1/1) ... [2022-01-18 04:01:52,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 04:01:52,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 04:01:52,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 04:01:52,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 04:01:52,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:01:52" (1/1) ... [2022-01-18 04:01:52,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 04:01:52,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:01:52,945 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 04:01:52,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 04:01:52,972 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-18 04:01:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 04:01:52,972 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 04:01:52,972 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-18 04:01:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 04:01:52,972 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 04:01:52,972 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 04:01:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 04:01:52,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 04:01:52,973 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 04:01:53,006 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 04:01:53,007 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 04:01:53,125 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 04:01:53,129 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 04:01:53,130 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 04:01:53,131 INFO L202 PluginConnector]: Adding new model clever.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 04:01:53 BoogieIcfgContainer [2022-01-18 04:01:53,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 04:01:53,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 04:01:53,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 04:01:53,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 04:01:53,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:01:52" (1/2) ... [2022-01-18 04:01:53,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a48a38 and model type clever.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 04:01:53, skipping insertion in model container [2022-01-18 04:01:53,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 04:01:53" (2/2) ... [2022-01-18 04:01:53,173 INFO L111 eAbstractionObserver]: Analyzing ICFG clever.wvr.bpl [2022-01-18 04:01:53,176 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 04:01:53,176 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 04:01:53,177 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 04:01:53,177 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 04:01:53,197 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 04:01:53,259 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 04:01:53,272 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 04:01:53,272 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 04:01:53,279 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 26 transitions, 68 flow [2022-01-18 04:01:53,306 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 59 states, 58 states have (on average 2.0344827586206895) internal successors, (118), 58 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:53,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 58 states have (on average 2.0344827586206895) internal successors, (118), 58 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:53,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-18 04:01:53,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:01:53,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:01:53,314 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:01:53,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:01:53,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1644387332, now seen corresponding path program 1 times [2022-01-18 04:01:53,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:01:53,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155607674] [2022-01-18 04:01:53,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:01:53,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:01:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:01:53,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:01:53,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:01:53,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155607674] [2022-01-18 04:01:53,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155607674] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 04:01:53,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 04:01:53,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 04:01:53,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043556920] [2022-01-18 04:01:53,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:01:53,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 04:01:53,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:01:53,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 04:01:53,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 04:01:53,483 INFO L87 Difference]: Start difference. First operand has 59 states, 58 states have (on average 2.0344827586206895) internal successors, (118), 58 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:53,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:01:53,528 INFO L93 Difference]: Finished difference Result 99 states and 202 transitions. [2022-01-18 04:01:53,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 04:01:53,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-01-18 04:01:53,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:01:53,537 INFO L225 Difference]: With dead ends: 99 [2022-01-18 04:01:53,537 INFO L226 Difference]: Without dead ends: 92 [2022-01-18 04:01:53,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 04:01:53,541 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:01:53,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 29 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:01:53,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-01-18 04:01:53,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 80. [2022-01-18 04:01:53,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.0759493670886076) internal successors, (164), 79 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:53,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 164 transitions. [2022-01-18 04:01:53,589 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 164 transitions. Word has length 12 [2022-01-18 04:01:53,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:01:53,590 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 164 transitions. [2022-01-18 04:01:53,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:53,591 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 164 transitions. [2022-01-18 04:01:53,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 04:01:53,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:01:53,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:01:53,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 04:01:53,603 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:01:53,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:01:53,612 INFO L85 PathProgramCache]: Analyzing trace with hash 27040755, now seen corresponding path program 1 times [2022-01-18 04:01:53,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:01:53,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625361222] [2022-01-18 04:01:53,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:01:53,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:01:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:01:53,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:01:53,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:01:53,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625361222] [2022-01-18 04:01:53,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625361222] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:01:53,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782904065] [2022-01-18 04:01:53,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:01:53,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:01:53,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:01:53,724 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:01:53,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 04:01:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:01:53,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-18 04:01:53,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:01:53,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:01:53,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:01:53,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:01:53,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782904065] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:01:53,901 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:01:53,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 6 [2022-01-18 04:01:53,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735075418] [2022-01-18 04:01:53,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:01:53,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 04:01:53,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:01:53,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 04:01:53,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:01:53,903 INFO L87 Difference]: Start difference. First operand 80 states and 164 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:54,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:01:54,007 INFO L93 Difference]: Finished difference Result 189 states and 379 transitions. [2022-01-18 04:01:54,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 04:01:54,008 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-18 04:01:54,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:01:54,011 INFO L225 Difference]: With dead ends: 189 [2022-01-18 04:01:54,011 INFO L226 Difference]: Without dead ends: 189 [2022-01-18 04:01:54,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-01-18 04:01:54,013 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 72 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:01:54,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 59 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:01:54,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-01-18 04:01:54,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 101. [2022-01-18 04:01:54,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 2.13) internal successors, (213), 100 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:54,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 213 transitions. [2022-01-18 04:01:54,022 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 213 transitions. Word has length 15 [2022-01-18 04:01:54,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:01:54,023 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 213 transitions. [2022-01-18 04:01:54,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:54,023 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 213 transitions. [2022-01-18 04:01:54,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 04:01:54,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:01:54,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:01:54,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-18 04:01:54,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:01:54,229 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:01:54,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:01:54,230 INFO L85 PathProgramCache]: Analyzing trace with hash 704095387, now seen corresponding path program 2 times [2022-01-18 04:01:54,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:01:54,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384322582] [2022-01-18 04:01:54,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:01:54,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:01:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:01:54,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:01:54,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:01:54,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384322582] [2022-01-18 04:01:54,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384322582] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 04:01:54,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 04:01:54,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 04:01:54,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349028202] [2022-01-18 04:01:54,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:01:54,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 04:01:54,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:01:54,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 04:01:54,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 04:01:54,267 INFO L87 Difference]: Start difference. First operand 101 states and 213 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:54,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:01:54,314 INFO L93 Difference]: Finished difference Result 120 states and 245 transitions. [2022-01-18 04:01:54,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 04:01:54,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2022-01-18 04:01:54,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:01:54,316 INFO L225 Difference]: With dead ends: 120 [2022-01-18 04:01:54,316 INFO L226 Difference]: Without dead ends: 113 [2022-01-18 04:01:54,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 04:01:54,319 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 31 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:01:54,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 42 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:01:54,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-01-18 04:01:54,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 101. [2022-01-18 04:01:54,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 2.1) internal successors, (210), 100 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:54,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 210 transitions. [2022-01-18 04:01:54,336 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 210 transitions. Word has length 15 [2022-01-18 04:01:54,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:01:54,337 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 210 transitions. [2022-01-18 04:01:54,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:54,337 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 210 transitions. [2022-01-18 04:01:54,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 04:01:54,338 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:01:54,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:01:54,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 04:01:54,338 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:01:54,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:01:54,339 INFO L85 PathProgramCache]: Analyzing trace with hash -583322209, now seen corresponding path program 1 times [2022-01-18 04:01:54,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:01:54,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850906569] [2022-01-18 04:01:54,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:01:54,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:01:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:01:54,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:01:54,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:01:54,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850906569] [2022-01-18 04:01:54,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850906569] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:01:54,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102736059] [2022-01-18 04:01:54,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:01:54,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:01:54,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:01:54,595 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:01:54,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 04:01:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:01:54,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:01:54,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:01:54,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:01:54,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:01:54,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:01:54,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102736059] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:01:54,863 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:01:54,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2022-01-18 04:01:54,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522507814] [2022-01-18 04:01:54,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:01:54,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 04:01:54,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:01:54,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 04:01:54,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:01:54,865 INFO L87 Difference]: Start difference. First operand 101 states and 210 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:55,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:01:55,151 INFO L93 Difference]: Finished difference Result 372 states and 784 transitions. [2022-01-18 04:01:55,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 04:01:55,152 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 04:01:55,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:01:55,153 INFO L225 Difference]: With dead ends: 372 [2022-01-18 04:01:55,153 INFO L226 Difference]: Without dead ends: 328 [2022-01-18 04:01:55,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2022-01-18 04:01:55,154 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 173 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:01:55,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 202 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:01:55,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-01-18 04:01:55,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 162. [2022-01-18 04:01:55,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.3229813664596275) internal successors, (374), 161 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:55,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 374 transitions. [2022-01-18 04:01:55,162 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 374 transitions. Word has length 19 [2022-01-18 04:01:55,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:01:55,162 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 374 transitions. [2022-01-18 04:01:55,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:55,162 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 374 transitions. [2022-01-18 04:01:55,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 04:01:55,163 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:01:55,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:01:55,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 04:01:55,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-18 04:01:55,375 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:01:55,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:01:55,376 INFO L85 PathProgramCache]: Analyzing trace with hash 304723312, now seen corresponding path program 1 times [2022-01-18 04:01:55,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:01:55,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011695514] [2022-01-18 04:01:55,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:01:55,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:01:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:01:55,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:01:55,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:01:55,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011695514] [2022-01-18 04:01:55,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011695514] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 04:01:55,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 04:01:55,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 04:01:55,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001442463] [2022-01-18 04:01:55,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:01:55,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 04:01:55,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:01:55,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 04:01:55,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 04:01:55,424 INFO L87 Difference]: Start difference. First operand 162 states and 374 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:55,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:01:55,447 INFO L93 Difference]: Finished difference Result 187 states and 429 transitions. [2022-01-18 04:01:55,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 04:01:55,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 04:01:55,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:01:55,448 INFO L225 Difference]: With dead ends: 187 [2022-01-18 04:01:55,448 INFO L226 Difference]: Without dead ends: 187 [2022-01-18 04:01:55,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 04:01:55,449 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 29 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:01:55,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 39 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:01:55,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-01-18 04:01:55,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 162. [2022-01-18 04:01:55,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.329192546583851) internal successors, (375), 161 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:55,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 375 transitions. [2022-01-18 04:01:55,472 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 375 transitions. Word has length 19 [2022-01-18 04:01:55,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:01:55,472 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 375 transitions. [2022-01-18 04:01:55,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:55,472 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 375 transitions. [2022-01-18 04:01:55,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-18 04:01:55,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:01:55,475 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] [2022-01-18 04:01:55,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 04:01:55,475 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:01:55,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:01:55,476 INFO L85 PathProgramCache]: Analyzing trace with hash -560508981, now seen corresponding path program 1 times [2022-01-18 04:01:55,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:01:55,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212769077] [2022-01-18 04:01:55,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:01:55,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:01:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:01:55,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:01:55,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:01:55,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212769077] [2022-01-18 04:01:55,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212769077] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:01:55,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851890779] [2022-01-18 04:01:55,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:01:55,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:01:55,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:01:55,647 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:01:55,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 04:01:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:01:55,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 04:01:55,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:01:55,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:01:55,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:01:56,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:01:56,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851890779] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:01:56,038 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:01:56,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 19 [2022-01-18 04:01:56,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117951855] [2022-01-18 04:01:56,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:01:56,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 04:01:56,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:01:56,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 04:01:56,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-01-18 04:01:56,040 INFO L87 Difference]: Start difference. First operand 162 states and 375 transitions. Second operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:56,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:01:56,922 INFO L93 Difference]: Finished difference Result 689 states and 1490 transitions. [2022-01-18 04:01:56,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 04:01:56,923 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-18 04:01:56,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:01:56,925 INFO L225 Difference]: With dead ends: 689 [2022-01-18 04:01:56,926 INFO L226 Difference]: Without dead ends: 675 [2022-01-18 04:01:56,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=319, Invalid=1573, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 04:01:56,927 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 295 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:01:56,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 592 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:01:56,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2022-01-18 04:01:56,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 352. [2022-01-18 04:01:56,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 2.393162393162393) internal successors, (840), 351 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:56,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 840 transitions. [2022-01-18 04:01:56,961 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 840 transitions. Word has length 22 [2022-01-18 04:01:56,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:01:56,962 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 840 transitions. [2022-01-18 04:01:56,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:56,962 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 840 transitions. [2022-01-18 04:01:56,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-18 04:01:56,963 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:01:56,963 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] [2022-01-18 04:01:56,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 04:01:57,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:01:57,179 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:01:57,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:01:57,180 INFO L85 PathProgramCache]: Analyzing trace with hash 700260299, now seen corresponding path program 2 times [2022-01-18 04:01:57,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:01:57,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591751095] [2022-01-18 04:01:57,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:01:57,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:01:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:01:57,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:01:57,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:01:57,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591751095] [2022-01-18 04:01:57,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591751095] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:01:57,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373067163] [2022-01-18 04:01:57,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:01:57,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:01:57,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:01:57,318 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:01:57,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 04:01:57,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:01:57,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:01:57,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 04:01:57,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:01:57,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:01:57,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:01:57,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:01:57,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373067163] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:01:57,653 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:01:57,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 19 [2022-01-18 04:01:57,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208340726] [2022-01-18 04:01:57,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:01:57,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 04:01:57,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:01:57,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 04:01:57,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2022-01-18 04:01:57,655 INFO L87 Difference]: Start difference. First operand 352 states and 840 transitions. Second operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:58,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:01:58,427 INFO L93 Difference]: Finished difference Result 1141 states and 2511 transitions. [2022-01-18 04:01:58,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 04:01:58,427 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-18 04:01:58,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:01:58,433 INFO L225 Difference]: With dead ends: 1141 [2022-01-18 04:01:58,433 INFO L226 Difference]: Without dead ends: 1113 [2022-01-18 04:01:58,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=292, Invalid=1514, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 04:01:58,434 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 322 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:01:58,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 498 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:01:58,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2022-01-18 04:01:58,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 625. [2022-01-18 04:01:58,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.4166666666666665) internal successors, (1508), 624 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:58,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1508 transitions. [2022-01-18 04:01:58,454 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1508 transitions. Word has length 22 [2022-01-18 04:01:58,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:01:58,455 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1508 transitions. [2022-01-18 04:01:58,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:58,456 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1508 transitions. [2022-01-18 04:01:58,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-18 04:01:58,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:01:58,460 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] [2022-01-18 04:01:58,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 04:01:58,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:01:58,679 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:01:58,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:01:58,679 INFO L85 PathProgramCache]: Analyzing trace with hash 380237771, now seen corresponding path program 3 times [2022-01-18 04:01:58,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:01:58,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086097800] [2022-01-18 04:01:58,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:01:58,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:01:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:01:58,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:01:58,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:01:58,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086097800] [2022-01-18 04:01:58,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086097800] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:01:58,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455786215] [2022-01-18 04:01:58,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:01:58,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:01:58,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:01:58,818 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:01:58,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 04:01:58,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 04:01:58,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:01:58,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 04:01:58,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:01:59,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:01:59,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:01:59,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:01:59,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455786215] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:01:59,145 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:01:59,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2022-01-18 04:01:59,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133386785] [2022-01-18 04:01:59,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:01:59,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 04:01:59,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:01:59,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 04:01:59,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-01-18 04:01:59,146 INFO L87 Difference]: Start difference. First operand 625 states and 1508 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:59,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:01:59,630 INFO L93 Difference]: Finished difference Result 1215 states and 2790 transitions. [2022-01-18 04:01:59,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 04:01:59,630 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-18 04:01:59,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:01:59,634 INFO L225 Difference]: With dead ends: 1215 [2022-01-18 04:01:59,634 INFO L226 Difference]: Without dead ends: 1194 [2022-01-18 04:01:59,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=762, Unknown=0, NotChecked=0, Total=930 [2022-01-18 04:01:59,635 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 189 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:01:59,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 560 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:01:59,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2022-01-18 04:01:59,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 862. [2022-01-18 04:01:59,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 2.464576074332172) internal successors, (2122), 861 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:59,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 2122 transitions. [2022-01-18 04:01:59,655 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 2122 transitions. Word has length 22 [2022-01-18 04:01:59,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:01:59,655 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 2122 transitions. [2022-01-18 04:01:59,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:01:59,655 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 2122 transitions. [2022-01-18 04:01:59,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-18 04:01:59,656 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:01:59,656 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] [2022-01-18 04:01:59,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 04:01:59,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:01:59,872 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:01:59,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:01:59,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1627974969, now seen corresponding path program 4 times [2022-01-18 04:01:59,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:01:59,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991170347] [2022-01-18 04:01:59,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:01:59,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:01:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:01:59,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:01:59,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:01:59,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991170347] [2022-01-18 04:01:59,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991170347] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:01:59,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509116098] [2022-01-18 04:01:59,997 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:01:59,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:01:59,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:01:59,999 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:00,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 04:02:00,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:02:00,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:02:00,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 04:02:00,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:00,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:00,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:00,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:00,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509116098] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:00,340 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:00,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 19 [2022-01-18 04:02:00,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955740427] [2022-01-18 04:02:00,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:00,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 04:02:00,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:00,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 04:02:00,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2022-01-18 04:02:00,341 INFO L87 Difference]: Start difference. First operand 862 states and 2122 transitions. Second operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:00,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:00,714 INFO L93 Difference]: Finished difference Result 1178 states and 2781 transitions. [2022-01-18 04:02:00,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 04:02:00,714 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-18 04:02:00,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:00,719 INFO L225 Difference]: With dead ends: 1178 [2022-01-18 04:02:00,719 INFO L226 Difference]: Without dead ends: 1157 [2022-01-18 04:02:00,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2022-01-18 04:02:00,720 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 151 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:00,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 517 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:02:00,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2022-01-18 04:02:00,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 922. [2022-01-18 04:02:00,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 921 states have (on average 2.478827361563518) internal successors, (2283), 921 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:00,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 2283 transitions. [2022-01-18 04:02:00,745 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 2283 transitions. Word has length 22 [2022-01-18 04:02:00,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:00,745 INFO L470 AbstractCegarLoop]: Abstraction has 922 states and 2283 transitions. [2022-01-18 04:02:00,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:00,745 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 2283 transitions. [2022-01-18 04:02:00,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:02:00,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:00,747 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:00,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 04:02:00,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:00,963 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:00,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:00,964 INFO L85 PathProgramCache]: Analyzing trace with hash -361604473, now seen corresponding path program 2 times [2022-01-18 04:02:00,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:00,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806309506] [2022-01-18 04:02:00,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:00,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:01,006 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:02:01,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:01,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806309506] [2022-01-18 04:02:01,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806309506] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:01,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728857003] [2022-01-18 04:02:01,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:02:01,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:01,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:01,022 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:01,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 04:02:01,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:02:01,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:02:01,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 04:02:01,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:01,086 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:02:01,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:01,134 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:02:01,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728857003] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:01,135 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:01,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2022-01-18 04:02:01,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524045354] [2022-01-18 04:02:01,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:01,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:02:01,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:01,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:02:01,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:02:01,137 INFO L87 Difference]: Start difference. First operand 922 states and 2283 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:01,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:01,265 INFO L93 Difference]: Finished difference Result 3353 states and 8090 transitions. [2022-01-18 04:02:01,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 04:02:01,265 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2022-01-18 04:02:01,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:01,277 INFO L225 Difference]: With dead ends: 3353 [2022-01-18 04:02:01,277 INFO L226 Difference]: Without dead ends: 3353 [2022-01-18 04:02:01,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:02:01,278 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 136 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:01,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 192 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:02:01,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3353 states. [2022-01-18 04:02:01,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3353 to 2738. [2022-01-18 04:02:01,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2738 states, 2737 states have (on average 2.5637559371574716) internal successors, (7017), 2737 states have internal predecessors, (7017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:01,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2738 states to 2738 states and 7017 transitions. [2022-01-18 04:02:01,348 INFO L78 Accepts]: Start accepts. Automaton has 2738 states and 7017 transitions. Word has length 25 [2022-01-18 04:02:01,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:01,348 INFO L470 AbstractCegarLoop]: Abstraction has 2738 states and 7017 transitions. [2022-01-18 04:02:01,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:01,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2738 states and 7017 transitions. [2022-01-18 04:02:01,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:02:01,353 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:01,353 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:01,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 04:02:01,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:01,567 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:01,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:01,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1307585132, now seen corresponding path program 5 times [2022-01-18 04:02:01,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:01,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834153127] [2022-01-18 04:02:01,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:01,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:01,598 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:01,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:01,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834153127] [2022-01-18 04:02:01,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834153127] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:01,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805732414] [2022-01-18 04:02:01,598 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:02:01,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:01,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:01,599 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:01,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 04:02:01,653 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:02:01,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:02:01,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:02:01,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:01,685 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:02:01,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:02:01,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805732414] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:01,721 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:01,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-01-18 04:02:01,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635880057] [2022-01-18 04:02:01,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:01,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 04:02:01,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:01,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 04:02:01,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-18 04:02:01,723 INFO L87 Difference]: Start difference. First operand 2738 states and 7017 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:01,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:01,797 INFO L93 Difference]: Finished difference Result 4288 states and 10732 transitions. [2022-01-18 04:02:01,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 04:02:01,797 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 25 [2022-01-18 04:02:01,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:01,814 INFO L225 Difference]: With dead ends: 4288 [2022-01-18 04:02:01,814 INFO L226 Difference]: Without dead ends: 4285 [2022-01-18 04:02:01,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:02:01,815 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 63 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:01,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 91 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:02:01,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4285 states. [2022-01-18 04:02:01,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4285 to 3233. [2022-01-18 04:02:01,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3233 states, 3232 states have (on average 2.5693069306930694) internal successors, (8304), 3232 states have internal predecessors, (8304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:01,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3233 states to 3233 states and 8304 transitions. [2022-01-18 04:02:01,932 INFO L78 Accepts]: Start accepts. Automaton has 3233 states and 8304 transitions. Word has length 25 [2022-01-18 04:02:01,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:01,932 INFO L470 AbstractCegarLoop]: Abstraction has 3233 states and 8304 transitions. [2022-01-18 04:02:01,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:01,933 INFO L276 IsEmpty]: Start isEmpty. Operand 3233 states and 8304 transitions. [2022-01-18 04:02:01,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:02:01,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:01,936 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:01,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 04:02:02,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-18 04:02:02,148 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:02,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:02,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1500532664, now seen corresponding path program 6 times [2022-01-18 04:02:02,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:02,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706668208] [2022-01-18 04:02:02,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:02,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:02,179 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:02,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:02,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706668208] [2022-01-18 04:02:02,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706668208] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:02,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051119847] [2022-01-18 04:02:02,179 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:02:02,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:02,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:02,194 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:02,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 04:02:02,218 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 04:02:02,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:02:02,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:02:02,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:02,267 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:02:02,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:02,310 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:02:02,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051119847] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:02,311 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:02,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-01-18 04:02:02,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362743602] [2022-01-18 04:02:02,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:02,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 04:02:02,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:02,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 04:02:02,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-18 04:02:02,312 INFO L87 Difference]: Start difference. First operand 3233 states and 8304 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:02,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:02,391 INFO L93 Difference]: Finished difference Result 5574 states and 14046 transitions. [2022-01-18 04:02:02,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 04:02:02,391 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 25 [2022-01-18 04:02:02,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:02,432 INFO L225 Difference]: With dead ends: 5574 [2022-01-18 04:02:02,432 INFO L226 Difference]: Without dead ends: 5568 [2022-01-18 04:02:02,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:02:02,433 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 89 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:02,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 75 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:02:02,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5568 states. [2022-01-18 04:02:02,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5568 to 3783. [2022-01-18 04:02:02,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3783 states, 3782 states have (on average 2.581702802749868) internal successors, (9764), 3782 states have internal predecessors, (9764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:02,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3783 states to 3783 states and 9764 transitions. [2022-01-18 04:02:02,527 INFO L78 Accepts]: Start accepts. Automaton has 3783 states and 9764 transitions. Word has length 25 [2022-01-18 04:02:02,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:02,528 INFO L470 AbstractCegarLoop]: Abstraction has 3783 states and 9764 transitions. [2022-01-18 04:02:02,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:02,528 INFO L276 IsEmpty]: Start isEmpty. Operand 3783 states and 9764 transitions. [2022-01-18 04:02:02,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:02:02,533 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:02,533 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:02,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 04:02:02,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:02,746 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:02,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:02,747 INFO L85 PathProgramCache]: Analyzing trace with hash -137039792, now seen corresponding path program 7 times [2022-01-18 04:02:02,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:02,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828479464] [2022-01-18 04:02:02,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:02,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:02,769 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:02,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:02,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828479464] [2022-01-18 04:02:02,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828479464] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:02,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924499500] [2022-01-18 04:02:02,770 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:02:02,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:02,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:02,771 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:02,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 04:02:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:02,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:02:02,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:02,833 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:02,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:02,873 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:02,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924499500] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:02,873 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:02,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-01-18 04:02:02,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896340364] [2022-01-18 04:02:02,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:02,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 04:02:02,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:02,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 04:02:02,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:02:02,874 INFO L87 Difference]: Start difference. First operand 3783 states and 9764 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:02,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:02,957 INFO L93 Difference]: Finished difference Result 5553 states and 13996 transitions. [2022-01-18 04:02:02,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 04:02:02,957 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 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 25 [2022-01-18 04:02:02,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:02,972 INFO L225 Difference]: With dead ends: 5553 [2022-01-18 04:02:02,972 INFO L226 Difference]: Without dead ends: 5533 [2022-01-18 04:02:02,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:02:02,974 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 115 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:02,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 83 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:02:02,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5533 states. [2022-01-18 04:02:03,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5533 to 4298. [2022-01-18 04:02:03,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4298 states, 4297 states have (on average 2.5778450081452178) internal successors, (11077), 4297 states have internal predecessors, (11077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:03,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4298 states to 4298 states and 11077 transitions. [2022-01-18 04:02:03,099 INFO L78 Accepts]: Start accepts. Automaton has 4298 states and 11077 transitions. Word has length 25 [2022-01-18 04:02:03,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:03,100 INFO L470 AbstractCegarLoop]: Abstraction has 4298 states and 11077 transitions. [2022-01-18 04:02:03,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:03,100 INFO L276 IsEmpty]: Start isEmpty. Operand 4298 states and 11077 transitions. [2022-01-18 04:02:03,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:02:03,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:03,106 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:03,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 04:02:03,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-18 04:02:03,332 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:03,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:03,332 INFO L85 PathProgramCache]: Analyzing trace with hash 552150559, now seen corresponding path program 8 times [2022-01-18 04:02:03,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:03,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300516130] [2022-01-18 04:02:03,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:03,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:03,532 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:02:03,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:03,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300516130] [2022-01-18 04:02:03,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300516130] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:03,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829122343] [2022-01-18 04:02:03,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:02:03,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:03,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:03,536 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:03,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 04:02:03,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:02:03,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:02:03,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 04:02:03,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:03,802 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:03,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:04,048 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:04,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829122343] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:04,049 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:04,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 24 [2022-01-18 04:02:04,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824237909] [2022-01-18 04:02:04,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:04,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 04:02:04,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:04,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 04:02:04,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2022-01-18 04:02:04,051 INFO L87 Difference]: Start difference. First operand 4298 states and 11077 transitions. Second operand has 25 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:05,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:05,127 INFO L93 Difference]: Finished difference Result 7346 states and 18226 transitions. [2022-01-18 04:02:05,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 04:02:05,127 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 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 25 [2022-01-18 04:02:05,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:05,142 INFO L225 Difference]: With dead ends: 7346 [2022-01-18 04:02:05,142 INFO L226 Difference]: Without dead ends: 7310 [2022-01-18 04:02:05,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=362, Invalid=2500, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 04:02:05,143 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 345 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:05,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 1074 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:02:05,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7310 states. [2022-01-18 04:02:05,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7310 to 5686. [2022-01-18 04:02:05,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5686 states, 5685 states have (on average 2.573262972735268) internal successors, (14629), 5685 states have internal predecessors, (14629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:05,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5686 states to 5686 states and 14629 transitions. [2022-01-18 04:02:05,290 INFO L78 Accepts]: Start accepts. Automaton has 5686 states and 14629 transitions. Word has length 25 [2022-01-18 04:02:05,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:05,290 INFO L470 AbstractCegarLoop]: Abstraction has 5686 states and 14629 transitions. [2022-01-18 04:02:05,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:05,290 INFO L276 IsEmpty]: Start isEmpty. Operand 5686 states and 14629 transitions. [2022-01-18 04:02:05,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:02:05,296 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:05,296 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:05,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 04:02:05,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-18 04:02:05,512 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:05,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:05,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1395198643, now seen corresponding path program 9 times [2022-01-18 04:02:05,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:05,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119488600] [2022-01-18 04:02:05,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:05,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:05,691 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:02:05,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:05,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119488600] [2022-01-18 04:02:05,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119488600] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:05,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897484608] [2022-01-18 04:02:05,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:02:05,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:05,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:05,693 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:05,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 04:02:05,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 04:02:05,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:02:05,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 04:02:05,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:05,983 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:05,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:06,181 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:02:06,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897484608] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:06,181 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:06,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 24 [2022-01-18 04:02:06,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375560049] [2022-01-18 04:02:06,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:06,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 04:02:06,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:06,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 04:02:06,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2022-01-18 04:02:06,182 INFO L87 Difference]: Start difference. First operand 5686 states and 14629 transitions. Second operand has 25 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:06,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:06,983 INFO L93 Difference]: Finished difference Result 7858 states and 19776 transitions. [2022-01-18 04:02:06,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 04:02:06,983 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 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 25 [2022-01-18 04:02:06,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:06,999 INFO L225 Difference]: With dead ends: 7858 [2022-01-18 04:02:06,999 INFO L226 Difference]: Without dead ends: 7822 [2022-01-18 04:02:07,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=278, Invalid=1702, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 04:02:07,000 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 308 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:07,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 959 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:02:07,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7822 states. [2022-01-18 04:02:07,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7822 to 6908. [2022-01-18 04:02:07,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6908 states, 6907 states have (on average 2.578398725930216) internal successors, (17809), 6907 states have internal predecessors, (17809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:07,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6908 states to 6908 states and 17809 transitions. [2022-01-18 04:02:07,120 INFO L78 Accepts]: Start accepts. Automaton has 6908 states and 17809 transitions. Word has length 25 [2022-01-18 04:02:07,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:07,120 INFO L470 AbstractCegarLoop]: Abstraction has 6908 states and 17809 transitions. [2022-01-18 04:02:07,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:07,121 INFO L276 IsEmpty]: Start isEmpty. Operand 6908 states and 17809 transitions. [2022-01-18 04:02:07,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:02:07,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:07,129 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:07,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 04:02:07,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-18 04:02:07,356 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:07,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:07,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1207140103, now seen corresponding path program 10 times [2022-01-18 04:02:07,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:07,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816425276] [2022-01-18 04:02:07,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:07,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:07,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:02:07,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:07,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816425276] [2022-01-18 04:02:07,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816425276] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:07,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741780082] [2022-01-18 04:02:07,508 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:02:07,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:07,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:07,509 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:07,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 04:02:07,526 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:02:07,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:02:07,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 04:02:07,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:07,736 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:07,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:07,989 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:07,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741780082] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:07,989 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:07,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2022-01-18 04:02:07,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035123925] [2022-01-18 04:02:07,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:07,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 04:02:07,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:07,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 04:02:07,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-01-18 04:02:07,991 INFO L87 Difference]: Start difference. First operand 6908 states and 17809 transitions. Second operand has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:09,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:09,428 INFO L93 Difference]: Finished difference Result 12698 states and 31660 transitions. [2022-01-18 04:02:09,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 04:02:09,429 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 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 25 [2022-01-18 04:02:09,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:09,458 INFO L225 Difference]: With dead ends: 12698 [2022-01-18 04:02:09,459 INFO L226 Difference]: Without dead ends: 12662 [2022-01-18 04:02:09,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=484, Invalid=3422, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 04:02:09,460 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 323 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:09,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 1740 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:02:09,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12662 states. [2022-01-18 04:02:09,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12662 to 10282. [2022-01-18 04:02:09,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10282 states, 10281 states have (on average 2.5722206011088415) internal successors, (26445), 10281 states have internal predecessors, (26445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:09,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10282 states to 10282 states and 26445 transitions. [2022-01-18 04:02:09,693 INFO L78 Accepts]: Start accepts. Automaton has 10282 states and 26445 transitions. Word has length 25 [2022-01-18 04:02:09,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:09,693 INFO L470 AbstractCegarLoop]: Abstraction has 10282 states and 26445 transitions. [2022-01-18 04:02:09,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:09,693 INFO L276 IsEmpty]: Start isEmpty. Operand 10282 states and 26445 transitions. [2022-01-18 04:02:09,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 04:02:09,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:09,701 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:09,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 04:02:09,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-18 04:02:09,917 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:09,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:09,918 INFO L85 PathProgramCache]: Analyzing trace with hash 563330891, now seen corresponding path program 11 times [2022-01-18 04:02:09,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:09,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995931717] [2022-01-18 04:02:09,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:09,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:10,071 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:10,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:10,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995931717] [2022-01-18 04:02:10,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995931717] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:10,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62138176] [2022-01-18 04:02:10,071 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:02:10,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:10,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:10,072 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:10,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 04:02:10,091 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 04:02:10,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:02:10,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 04:02:10,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:10,329 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:10,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:10,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62138176] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:10,673 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:10,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 30 [2022-01-18 04:02:10,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622838225] [2022-01-18 04:02:10,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:10,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 04:02:10,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:10,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 04:02:10,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=801, Unknown=0, NotChecked=0, Total=930 [2022-01-18 04:02:10,674 INFO L87 Difference]: Start difference. First operand 10282 states and 26445 transitions. Second operand has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:15,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:15,159 INFO L93 Difference]: Finished difference Result 19095 states and 47762 transitions. [2022-01-18 04:02:15,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-01-18 04:02:15,166 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 04:02:15,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:15,203 INFO L225 Difference]: With dead ends: 19095 [2022-01-18 04:02:15,203 INFO L226 Difference]: Without dead ends: 19030 [2022-01-18 04:02:15,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5970 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2059, Invalid=15497, Unknown=0, NotChecked=0, Total=17556 [2022-01-18 04:02:15,206 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 1016 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 2100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:15,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1016 Valid, 1995 Invalid, 2100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 04:02:15,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19030 states. [2022-01-18 04:02:15,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19030 to 16042. [2022-01-18 04:02:15,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16042 states, 16041 states have (on average 2.5694158718284394) internal successors, (41216), 16041 states have internal predecessors, (41216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:15,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16042 states to 16042 states and 41216 transitions. [2022-01-18 04:02:15,515 INFO L78 Accepts]: Start accepts. Automaton has 16042 states and 41216 transitions. Word has length 28 [2022-01-18 04:02:15,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:15,515 INFO L470 AbstractCegarLoop]: Abstraction has 16042 states and 41216 transitions. [2022-01-18 04:02:15,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:15,515 INFO L276 IsEmpty]: Start isEmpty. Operand 16042 states and 41216 transitions. [2022-01-18 04:02:15,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 04:02:15,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:15,529 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:15,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 04:02:15,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:15,739 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:15,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:15,740 INFO L85 PathProgramCache]: Analyzing trace with hash 384948611, now seen corresponding path program 12 times [2022-01-18 04:02:15,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:15,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886135270] [2022-01-18 04:02:15,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:15,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:15,904 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:15,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:15,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886135270] [2022-01-18 04:02:15,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886135270] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:15,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541547389] [2022-01-18 04:02:15,905 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:02:15,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:15,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:15,906 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:15,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 04:02:15,927 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 04:02:15,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:02:15,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 04:02:15,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:16,165 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:16,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:16,527 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:16,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541547389] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:16,527 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:16,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 30 [2022-01-18 04:02:16,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230676072] [2022-01-18 04:02:16,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:16,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 04:02:16,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:16,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 04:02:16,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2022-01-18 04:02:16,529 INFO L87 Difference]: Start difference. First operand 16042 states and 41216 transitions. Second operand has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:20,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:20,358 INFO L93 Difference]: Finished difference Result 33116 states and 82977 transitions. [2022-01-18 04:02:20,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-01-18 04:02:20,359 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 04:02:20,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:20,427 INFO L225 Difference]: With dead ends: 33116 [2022-01-18 04:02:20,428 INFO L226 Difference]: Without dead ends: 33054 [2022-01-18 04:02:20,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4789 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1755, Invalid=12765, Unknown=0, NotChecked=0, Total=14520 [2022-01-18 04:02:20,431 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 907 mSDsluCounter, 2435 mSDsCounter, 0 mSdLazyCounter, 1969 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 2173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:20,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 2290 Invalid, 2173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1969 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 04:02:20,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33054 states. [2022-01-18 04:02:20,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33054 to 28120. [2022-01-18 04:02:20,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28120 states, 28119 states have (on average 2.5689391514634234) internal successors, (72236), 28119 states have internal predecessors, (72236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:21,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28120 states to 28120 states and 72236 transitions. [2022-01-18 04:02:21,150 INFO L78 Accepts]: Start accepts. Automaton has 28120 states and 72236 transitions. Word has length 28 [2022-01-18 04:02:21,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:21,150 INFO L470 AbstractCegarLoop]: Abstraction has 28120 states and 72236 transitions. [2022-01-18 04:02:21,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:21,150 INFO L276 IsEmpty]: Start isEmpty. Operand 28120 states and 72236 transitions. [2022-01-18 04:02:21,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 04:02:21,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:21,172 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:21,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-18 04:02:21,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-18 04:02:21,401 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:21,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:21,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1131111861, now seen corresponding path program 13 times [2022-01-18 04:02:21,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:21,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642791210] [2022-01-18 04:02:21,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:21,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:21,574 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:21,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:21,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642791210] [2022-01-18 04:02:21,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642791210] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:21,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869526609] [2022-01-18 04:02:21,574 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:02:21,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:21,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:21,576 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:21,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 04:02:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:21,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 04:02:21,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:21,861 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:21,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 04:02:22,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869526609] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:22,092 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:22,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 8] total 27 [2022-01-18 04:02:22,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513865210] [2022-01-18 04:02:22,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:22,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 04:02:22,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:22,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 04:02:22,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2022-01-18 04:02:22,094 INFO L87 Difference]: Start difference. First operand 28120 states and 72236 transitions. Second operand has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 27 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:23,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:23,978 INFO L93 Difference]: Finished difference Result 32737 states and 83118 transitions. [2022-01-18 04:02:23,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 04:02:23,979 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 27 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 04:02:23,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:24,043 INFO L225 Difference]: With dead ends: 32737 [2022-01-18 04:02:24,043 INFO L226 Difference]: Without dead ends: 32688 [2022-01-18 04:02:24,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1605 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=661, Invalid=5345, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 04:02:24,045 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 442 mSDsluCounter, 2229 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:24,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 1891 Invalid, 1876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:02:24,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32688 states. [2022-01-18 04:02:24,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32688 to 30427. [2022-01-18 04:02:24,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30427 states, 30426 states have (on average 2.5686583842766058) internal successors, (78154), 30426 states have internal predecessors, (78154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:24,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30427 states to 30427 states and 78154 transitions. [2022-01-18 04:02:24,721 INFO L78 Accepts]: Start accepts. Automaton has 30427 states and 78154 transitions. Word has length 28 [2022-01-18 04:02:24,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:24,721 INFO L470 AbstractCegarLoop]: Abstraction has 30427 states and 78154 transitions. [2022-01-18 04:02:24,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 27 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:24,721 INFO L276 IsEmpty]: Start isEmpty. Operand 30427 states and 78154 transitions. [2022-01-18 04:02:24,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 04:02:24,744 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:24,744 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:24,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 04:02:24,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:24,959 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:24,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:24,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1451134389, now seen corresponding path program 14 times [2022-01-18 04:02:24,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:24,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720686706] [2022-01-18 04:02:24,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:24,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:25,138 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:25,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:25,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720686706] [2022-01-18 04:02:25,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720686706] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:25,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286138962] [2022-01-18 04:02:25,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:02:25,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:25,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:25,140 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:25,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 04:02:25,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:02:25,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:02:25,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 04:02:25,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:25,431 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:02:25,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:25,719 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-18 04:02:25,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286138962] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:25,719 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:25,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 8] total 26 [2022-01-18 04:02:25,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774969121] [2022-01-18 04:02:25,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:25,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 04:02:25,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:25,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 04:02:25,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2022-01-18 04:02:25,720 INFO L87 Difference]: Start difference. First operand 30427 states and 78154 transitions. Second operand has 27 states, 27 states have (on average 2.074074074074074) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:27,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:27,125 INFO L93 Difference]: Finished difference Result 34892 states and 88413 transitions. [2022-01-18 04:02:27,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 04:02:27,128 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.074074074074074) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 04:02:27,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:27,201 INFO L225 Difference]: With dead ends: 34892 [2022-01-18 04:02:27,201 INFO L226 Difference]: Without dead ends: 34822 [2022-01-18 04:02:27,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1133 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=503, Invalid=3919, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 04:02:27,203 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 435 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:27,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 1435 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:02:27,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34822 states. [2022-01-18 04:02:27,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34822 to 31263. [2022-01-18 04:02:27,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31263 states, 31262 states have (on average 2.5682297997568933) internal successors, (80288), 31262 states have internal predecessors, (80288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:27,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31263 states to 31263 states and 80288 transitions. [2022-01-18 04:02:27,827 INFO L78 Accepts]: Start accepts. Automaton has 31263 states and 80288 transitions. Word has length 28 [2022-01-18 04:02:27,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:27,827 INFO L470 AbstractCegarLoop]: Abstraction has 31263 states and 80288 transitions. [2022-01-18 04:02:27,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.074074074074074) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:27,827 INFO L276 IsEmpty]: Start isEmpty. Operand 31263 states and 80288 transitions. [2022-01-18 04:02:27,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 04:02:27,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:27,844 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:27,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-18 04:02:28,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:28,044 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:28,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:28,045 INFO L85 PathProgramCache]: Analyzing trace with hash 835620167, now seen corresponding path program 15 times [2022-01-18 04:02:28,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:28,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641936166] [2022-01-18 04:02:28,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:28,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:28,213 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:28,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:28,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641936166] [2022-01-18 04:02:28,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641936166] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:28,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512146713] [2022-01-18 04:02:28,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:02:28,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:28,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:28,224 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:28,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 04:02:28,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 04:02:28,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:02:28,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 04:02:28,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:28,467 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:28,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:28,669 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 04:02:28,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512146713] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:28,670 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:28,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 8] total 27 [2022-01-18 04:02:28,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798997903] [2022-01-18 04:02:28,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:28,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 04:02:28,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:28,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 04:02:28,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2022-01-18 04:02:28,671 INFO L87 Difference]: Start difference. First operand 31263 states and 80288 transitions. Second operand has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 27 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:29,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:29,848 INFO L93 Difference]: Finished difference Result 37680 states and 95652 transitions. [2022-01-18 04:02:29,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 04:02:29,848 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 27 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 04:02:29,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:29,931 INFO L225 Difference]: With dead ends: 37680 [2022-01-18 04:02:29,932 INFO L226 Difference]: Without dead ends: 37644 [2022-01-18 04:02:29,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=330, Invalid=2532, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 04:02:29,932 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 341 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:29,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 1256 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:02:29,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37644 states. [2022-01-18 04:02:30,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37644 to 34762. [2022-01-18 04:02:30,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34762 states, 34761 states have (on average 2.574925922729496) internal successors, (89507), 34761 states have internal predecessors, (89507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:30,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34762 states to 34762 states and 89507 transitions. [2022-01-18 04:02:30,675 INFO L78 Accepts]: Start accepts. Automaton has 34762 states and 89507 transitions. Word has length 28 [2022-01-18 04:02:30,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:30,675 INFO L470 AbstractCegarLoop]: Abstraction has 34762 states and 89507 transitions. [2022-01-18 04:02:30,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 27 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:30,676 INFO L276 IsEmpty]: Start isEmpty. Operand 34762 states and 89507 transitions. [2022-01-18 04:02:30,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:02:30,696 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:30,696 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:30,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-01-18 04:02:30,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:30,912 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:30,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:30,912 INFO L85 PathProgramCache]: Analyzing trace with hash -807763788, now seen corresponding path program 16 times [2022-01-18 04:02:30,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:30,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655796145] [2022-01-18 04:02:30,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:30,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:30,956 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:02:30,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:30,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655796145] [2022-01-18 04:02:30,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655796145] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:30,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643032580] [2022-01-18 04:02:30,957 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:02:30,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:30,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:30,958 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:30,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 04:02:30,978 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:02:30,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:02:30,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 04:02:30,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:02:31,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:02:31,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643032580] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:31,059 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:31,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 10 [2022-01-18 04:02:31,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711113091] [2022-01-18 04:02:31,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:31,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:02:31,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:31,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:02:31,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:02:31,060 INFO L87 Difference]: Start difference. First operand 34762 states and 89507 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:31,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:31,270 INFO L93 Difference]: Finished difference Result 26614 states and 65956 transitions. [2022-01-18 04:02:31,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 04:02:31,271 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:02:31,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:31,341 INFO L225 Difference]: With dead ends: 26614 [2022-01-18 04:02:31,341 INFO L226 Difference]: Without dead ends: 26614 [2022-01-18 04:02:31,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:02:31,342 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 106 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:31,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 175 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:02:31,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26614 states. [2022-01-18 04:02:31,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26614 to 23391. [2022-01-18 04:02:31,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23391 states, 23390 states have (on average 2.534972210346302) internal successors, (59293), 23390 states have internal predecessors, (59293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:31,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23391 states to 23391 states and 59293 transitions. [2022-01-18 04:02:31,988 INFO L78 Accepts]: Start accepts. Automaton has 23391 states and 59293 transitions. Word has length 29 [2022-01-18 04:02:31,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:31,988 INFO L470 AbstractCegarLoop]: Abstraction has 23391 states and 59293 transitions. [2022-01-18 04:02:31,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:31,988 INFO L276 IsEmpty]: Start isEmpty. Operand 23391 states and 59293 transitions. [2022-01-18 04:02:32,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:02:32,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:32,001 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:32,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-01-18 04:02:32,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:32,207 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:32,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:32,207 INFO L85 PathProgramCache]: Analyzing trace with hash -183781140, now seen corresponding path program 17 times [2022-01-18 04:02:32,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:32,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412036403] [2022-01-18 04:02:32,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:32,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:32,251 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:02:32,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:32,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412036403] [2022-01-18 04:02:32,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412036403] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:32,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983285698] [2022-01-18 04:02:32,252 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:02:32,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:32,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:32,253 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:32,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 04:02:32,271 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:02:32,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:02:32,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 04:02:32,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:32,312 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:02:32,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:32,346 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:02:32,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983285698] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:32,346 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:32,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-01-18 04:02:32,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651520678] [2022-01-18 04:02:32,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:32,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 04:02:32,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:32,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 04:02:32,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-18 04:02:32,347 INFO L87 Difference]: Start difference. First operand 23391 states and 59293 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:32,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:32,467 INFO L93 Difference]: Finished difference Result 19626 states and 48862 transitions. [2022-01-18 04:02:32,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 04:02:32,467 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:02:32,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:32,501 INFO L225 Difference]: With dead ends: 19626 [2022-01-18 04:02:32,501 INFO L226 Difference]: Without dead ends: 19088 [2022-01-18 04:02:32,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:02:32,502 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 97 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:32,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 100 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:02:32,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19088 states. [2022-01-18 04:02:32,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19088 to 18247. [2022-01-18 04:02:32,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18247 states, 18246 states have (on average 2.5042749095692205) internal successors, (45693), 18246 states have internal predecessors, (45693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:32,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18247 states to 18247 states and 45693 transitions. [2022-01-18 04:02:32,855 INFO L78 Accepts]: Start accepts. Automaton has 18247 states and 45693 transitions. Word has length 29 [2022-01-18 04:02:32,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:32,855 INFO L470 AbstractCegarLoop]: Abstraction has 18247 states and 45693 transitions. [2022-01-18 04:02:32,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:32,855 INFO L276 IsEmpty]: Start isEmpty. Operand 18247 states and 45693 transitions. [2022-01-18 04:02:32,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:02:32,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:32,863 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:32,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-01-18 04:02:33,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-01-18 04:02:33,064 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:33,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:33,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1939288821, now seen corresponding path program 3 times [2022-01-18 04:02:33,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:33,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466970127] [2022-01-18 04:02:33,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:33,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:33,090 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:02:33,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:33,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466970127] [2022-01-18 04:02:33,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466970127] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:33,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257373887] [2022-01-18 04:02:33,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:02:33,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:33,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:33,092 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:33,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 04:02:33,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:02:33,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:02:33,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:02:33,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:33,157 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:33,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:33,211 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:33,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257373887] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:33,212 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:33,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-18 04:02:33,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252672055] [2022-01-18 04:02:33,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:33,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 04:02:33,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:33,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 04:02:33,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:02:33,213 INFO L87 Difference]: Start difference. First operand 18247 states and 45693 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:33,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:33,348 INFO L93 Difference]: Finished difference Result 23138 states and 57057 transitions. [2022-01-18 04:02:33,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 04:02:33,349 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:02:33,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:33,391 INFO L225 Difference]: With dead ends: 23138 [2022-01-18 04:02:33,391 INFO L226 Difference]: Without dead ends: 23135 [2022-01-18 04:02:33,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:02:33,392 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 63 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:33,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 149 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:02:33,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23135 states. [2022-01-18 04:02:33,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23135 to 19973. [2022-01-18 04:02:33,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19973 states, 19972 states have (on average 2.5174243941518126) internal successors, (50278), 19972 states have internal predecessors, (50278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:33,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19973 states to 19973 states and 50278 transitions. [2022-01-18 04:02:33,852 INFO L78 Accepts]: Start accepts. Automaton has 19973 states and 50278 transitions. Word has length 29 [2022-01-18 04:02:33,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:33,852 INFO L470 AbstractCegarLoop]: Abstraction has 19973 states and 50278 transitions. [2022-01-18 04:02:33,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:33,852 INFO L276 IsEmpty]: Start isEmpty. Operand 19973 states and 50278 transitions. [2022-01-18 04:02:33,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:02:33,861 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:33,861 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:33,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-18 04:02:34,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-01-18 04:02:34,064 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:34,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:34,064 INFO L85 PathProgramCache]: Analyzing trace with hash -976130165, now seen corresponding path program 4 times [2022-01-18 04:02:34,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:34,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760943205] [2022-01-18 04:02:34,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:34,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:34,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:34,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760943205] [2022-01-18 04:02:34,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760943205] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:34,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915150360] [2022-01-18 04:02:34,092 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:02:34,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:34,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:34,093 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:34,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 04:02:34,111 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:02:34,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:02:34,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:02:34,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:02:34,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:34,190 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:02:34,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915150360] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:34,190 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:34,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-18 04:02:34,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387544337] [2022-01-18 04:02:34,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:34,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 04:02:34,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:34,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 04:02:34,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:02:34,191 INFO L87 Difference]: Start difference. First operand 19973 states and 50278 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:34,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:34,354 INFO L93 Difference]: Finished difference Result 30211 states and 74727 transitions. [2022-01-18 04:02:34,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 04:02:34,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:02:34,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:34,523 INFO L225 Difference]: With dead ends: 30211 [2022-01-18 04:02:34,523 INFO L226 Difference]: Without dead ends: 30205 [2022-01-18 04:02:34,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:02:34,523 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 119 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:34,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 108 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:02:34,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30205 states. [2022-01-18 04:02:34,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30205 to 21738. [2022-01-18 04:02:34,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21738 states, 21737 states have (on average 2.5046234530984037) internal successors, (54443), 21737 states have internal predecessors, (54443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:34,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21738 states to 21738 states and 54443 transitions. [2022-01-18 04:02:34,967 INFO L78 Accepts]: Start accepts. Automaton has 21738 states and 54443 transitions. Word has length 29 [2022-01-18 04:02:34,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:34,967 INFO L470 AbstractCegarLoop]: Abstraction has 21738 states and 54443 transitions. [2022-01-18 04:02:34,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:34,967 INFO L276 IsEmpty]: Start isEmpty. Operand 21738 states and 54443 transitions. [2022-01-18 04:02:34,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:02:34,974 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:34,974 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:34,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-18 04:02:35,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:35,175 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:35,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:35,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1681264675, now seen corresponding path program 5 times [2022-01-18 04:02:35,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:35,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005837604] [2022-01-18 04:02:35,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:35,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:35,205 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:02:35,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:35,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005837604] [2022-01-18 04:02:35,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005837604] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:35,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809178590] [2022-01-18 04:02:35,206 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:02:35,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:35,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:35,207 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:35,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 04:02:35,225 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:02:35,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:02:35,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:02:35,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:35,269 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:35,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:35,309 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:35,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809178590] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:35,310 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:35,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2022-01-18 04:02:35,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899073070] [2022-01-18 04:02:35,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:35,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:02:35,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:35,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:02:35,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:02:35,311 INFO L87 Difference]: Start difference. First operand 21738 states and 54443 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:35,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:35,475 INFO L93 Difference]: Finished difference Result 27079 states and 66694 transitions. [2022-01-18 04:02:35,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 04:02:35,476 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:02:35,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:35,535 INFO L225 Difference]: With dead ends: 27079 [2022-01-18 04:02:35,536 INFO L226 Difference]: Without dead ends: 27067 [2022-01-18 04:02:35,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:02:35,536 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 123 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:35,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 120 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:02:35,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27067 states. [2022-01-18 04:02:35,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27067 to 22680. [2022-01-18 04:02:35,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22680 states, 22679 states have (on average 2.5144847656422242) internal successors, (57026), 22679 states have internal predecessors, (57026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:35,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22680 states to 22680 states and 57026 transitions. [2022-01-18 04:02:35,996 INFO L78 Accepts]: Start accepts. Automaton has 22680 states and 57026 transitions. Word has length 29 [2022-01-18 04:02:35,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:35,996 INFO L470 AbstractCegarLoop]: Abstraction has 22680 states and 57026 transitions. [2022-01-18 04:02:35,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:35,996 INFO L276 IsEmpty]: Start isEmpty. Operand 22680 states and 57026 transitions. [2022-01-18 04:02:36,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:02:36,005 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:36,005 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:36,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-18 04:02:36,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:36,212 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:36,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:36,212 INFO L85 PathProgramCache]: Analyzing trace with hash -587660293, now seen corresponding path program 18 times [2022-01-18 04:02:36,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:36,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297407064] [2022-01-18 04:02:36,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:36,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:36,235 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:02:36,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:36,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297407064] [2022-01-18 04:02:36,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297407064] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:36,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226226713] [2022-01-18 04:02:36,236 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:02:36,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:36,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:36,237 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:36,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 04:02:36,255 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:02:36,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:02:36,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:02:36,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:02:36,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:36,328 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:02:36,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226226713] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:36,328 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:36,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-01-18 04:02:36,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605660746] [2022-01-18 04:02:36,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:36,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 04:02:36,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:36,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 04:02:36,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:02:36,329 INFO L87 Difference]: Start difference. First operand 22680 states and 57026 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:36,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:36,460 INFO L93 Difference]: Finished difference Result 28120 states and 70004 transitions. [2022-01-18 04:02:36,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 04:02:36,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:02:36,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:36,512 INFO L225 Difference]: With dead ends: 28120 [2022-01-18 04:02:36,512 INFO L226 Difference]: Without dead ends: 27988 [2022-01-18 04:02:36,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:02:36,512 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 75 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:36,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 102 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:02:36,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27988 states. [2022-01-18 04:02:36,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27988 to 27218. [2022-01-18 04:02:36,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27218 states, 27217 states have (on average 2.5050152478230516) internal successors, (68179), 27217 states have internal predecessors, (68179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:37,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27218 states to 27218 states and 68179 transitions. [2022-01-18 04:02:37,052 INFO L78 Accepts]: Start accepts. Automaton has 27218 states and 68179 transitions. Word has length 29 [2022-01-18 04:02:37,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:37,053 INFO L470 AbstractCegarLoop]: Abstraction has 27218 states and 68179 transitions. [2022-01-18 04:02:37,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:37,053 INFO L276 IsEmpty]: Start isEmpty. Operand 27218 states and 68179 transitions. [2022-01-18 04:02:37,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:02:37,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:37,061 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:37,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-18 04:02:37,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-01-18 04:02:37,275 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:37,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:37,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1682739263, now seen corresponding path program 19 times [2022-01-18 04:02:37,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:37,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645651810] [2022-01-18 04:02:37,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:37,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:37,297 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:02:37,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:37,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645651810] [2022-01-18 04:02:37,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645651810] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:37,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426040884] [2022-01-18 04:02:37,297 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:02:37,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:37,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:37,298 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:37,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 04:02:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:37,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:02:37,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:37,359 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:02:37,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:02:37,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426040884] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:37,399 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:37,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-01-18 04:02:37,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732431520] [2022-01-18 04:02:37,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:37,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 04:02:37,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:37,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 04:02:37,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-18 04:02:37,400 INFO L87 Difference]: Start difference. First operand 27218 states and 68179 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:37,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:37,543 INFO L93 Difference]: Finished difference Result 27540 states and 68054 transitions. [2022-01-18 04:02:37,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 04:02:37,544 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:02:37,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:37,602 INFO L225 Difference]: With dead ends: 27540 [2022-01-18 04:02:37,602 INFO L226 Difference]: Without dead ends: 27537 [2022-01-18 04:02:37,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-18 04:02:37,603 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 80 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:37,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 82 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:02:37,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27537 states. [2022-01-18 04:02:38,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27537 to 27194. [2022-01-18 04:02:38,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27194 states, 27193 states have (on average 2.4762254992093555) internal successors, (67336), 27193 states have internal predecessors, (67336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:38,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27194 states to 27194 states and 67336 transitions. [2022-01-18 04:02:38,217 INFO L78 Accepts]: Start accepts. Automaton has 27194 states and 67336 transitions. Word has length 29 [2022-01-18 04:02:38,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:38,218 INFO L470 AbstractCegarLoop]: Abstraction has 27194 states and 67336 transitions. [2022-01-18 04:02:38,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:38,218 INFO L276 IsEmpty]: Start isEmpty. Operand 27194 states and 67336 transitions. [2022-01-18 04:02:38,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:02:38,226 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:38,226 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:38,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-01-18 04:02:38,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-18 04:02:38,427 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:38,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:38,427 INFO L85 PathProgramCache]: Analyzing trace with hash -712336569, now seen corresponding path program 20 times [2022-01-18 04:02:38,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:38,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069515846] [2022-01-18 04:02:38,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:38,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:38,449 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:02:38,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:38,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069515846] [2022-01-18 04:02:38,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069515846] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:38,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121941056] [2022-01-18 04:02:38,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:02:38,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:38,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:38,451 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:38,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 04:02:38,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:02:38,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:02:38,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:02:38,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:38,508 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:02:38,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:38,558 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:02:38,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121941056] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:38,558 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:38,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-01-18 04:02:38,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846368655] [2022-01-18 04:02:38,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:38,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 04:02:38,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:38,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 04:02:38,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-18 04:02:38,561 INFO L87 Difference]: Start difference. First operand 27194 states and 67336 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:38,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:38,875 INFO L93 Difference]: Finished difference Result 31849 states and 78450 transitions. [2022-01-18 04:02:38,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 04:02:38,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:02:38,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:38,961 INFO L225 Difference]: With dead ends: 31849 [2022-01-18 04:02:38,962 INFO L226 Difference]: Without dead ends: 31837 [2022-01-18 04:02:38,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:02:38,962 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 50 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:38,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 97 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:02:38,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31837 states. [2022-01-18 04:02:39,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31837 to 31644. [2022-01-18 04:02:39,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31644 states, 31643 states have (on average 2.4666118888853776) internal successors, (78051), 31643 states have internal predecessors, (78051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:39,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31644 states to 31644 states and 78051 transitions. [2022-01-18 04:02:39,611 INFO L78 Accepts]: Start accepts. Automaton has 31644 states and 78051 transitions. Word has length 29 [2022-01-18 04:02:39,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:39,611 INFO L470 AbstractCegarLoop]: Abstraction has 31644 states and 78051 transitions. [2022-01-18 04:02:39,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:39,611 INFO L276 IsEmpty]: Start isEmpty. Operand 31644 states and 78051 transitions. [2022-01-18 04:02:39,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:02:39,621 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:39,621 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:39,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-01-18 04:02:39,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-18 04:02:39,822 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:39,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:39,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1117704309, now seen corresponding path program 21 times [2022-01-18 04:02:39,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:39,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272553197] [2022-01-18 04:02:39,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:39,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:39,842 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:02:39,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:39,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272553197] [2022-01-18 04:02:39,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272553197] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:39,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880315107] [2022-01-18 04:02:39,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:02:39,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:39,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:39,844 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:39,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 04:02:39,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:02:39,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:02:39,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:02:39,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:39,903 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:02:39,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:39,945 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:02:39,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880315107] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:39,946 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:39,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-01-18 04:02:39,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951127943] [2022-01-18 04:02:39,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:39,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 04:02:39,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:39,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 04:02:39,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-18 04:02:39,947 INFO L87 Difference]: Start difference. First operand 31644 states and 78051 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:40,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:40,134 INFO L93 Difference]: Finished difference Result 32521 states and 79874 transitions. [2022-01-18 04:02:40,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 04:02:40,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:02:40,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:40,212 INFO L225 Difference]: With dead ends: 32521 [2022-01-18 04:02:40,213 INFO L226 Difference]: Without dead ends: 32518 [2022-01-18 04:02:40,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-18 04:02:40,213 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 61 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:40,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 78 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:02:40,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32518 states. [2022-01-18 04:02:40,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32518 to 32276. [2022-01-18 04:02:40,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32276 states, 32275 states have (on average 2.4610069713400464) internal successors, (79429), 32275 states have internal predecessors, (79429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:40,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32276 states to 32276 states and 79429 transitions. [2022-01-18 04:02:40,947 INFO L78 Accepts]: Start accepts. Automaton has 32276 states and 79429 transitions. Word has length 29 [2022-01-18 04:02:40,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:40,947 INFO L470 AbstractCegarLoop]: Abstraction has 32276 states and 79429 transitions. [2022-01-18 04:02:40,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:40,947 INFO L276 IsEmpty]: Start isEmpty. Operand 32276 states and 79429 transitions. [2022-01-18 04:02:40,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:02:40,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:40,958 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:40,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-01-18 04:02:41,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:41,158 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:41,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:41,159 INFO L85 PathProgramCache]: Analyzing trace with hash -652390267, now seen corresponding path program 22 times [2022-01-18 04:02:41,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:41,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202292384] [2022-01-18 04:02:41,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:41,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:41,180 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:02:41,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:41,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202292384] [2022-01-18 04:02:41,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202292384] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:41,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497707879] [2022-01-18 04:02:41,181 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:02:41,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:41,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:41,182 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:41,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 04:02:41,201 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:02:41,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:02:41,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:02:41,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:02:41,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:41,287 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:02:41,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497707879] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:41,287 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:41,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-01-18 04:02:41,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743790843] [2022-01-18 04:02:41,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:41,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 04:02:41,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:41,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 04:02:41,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:02:41,288 INFO L87 Difference]: Start difference. First operand 32276 states and 79429 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:41,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:41,478 INFO L93 Difference]: Finished difference Result 32461 states and 78954 transitions. [2022-01-18 04:02:41,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 04:02:41,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:02:41,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:41,546 INFO L225 Difference]: With dead ends: 32461 [2022-01-18 04:02:41,547 INFO L226 Difference]: Without dead ends: 32458 [2022-01-18 04:02:41,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:02:41,547 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 63 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:41,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 103 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:02:41,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32458 states. [2022-01-18 04:02:42,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32458 to 31677. [2022-01-18 04:02:42,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31677 states, 31676 states have (on average 2.4392600075767144) internal successors, (77266), 31676 states have internal predecessors, (77266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:42,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31677 states to 31677 states and 77266 transitions. [2022-01-18 04:02:42,177 INFO L78 Accepts]: Start accepts. Automaton has 31677 states and 77266 transitions. Word has length 29 [2022-01-18 04:02:42,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:42,177 INFO L470 AbstractCegarLoop]: Abstraction has 31677 states and 77266 transitions. [2022-01-18 04:02:42,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:42,178 INFO L276 IsEmpty]: Start isEmpty. Operand 31677 states and 77266 transitions. [2022-01-18 04:02:42,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 04:02:42,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:42,189 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:42,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-01-18 04:02:42,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:42,391 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:42,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:42,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1949861535, now seen corresponding path program 23 times [2022-01-18 04:02:42,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:42,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439138118] [2022-01-18 04:02:42,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:42,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:42,557 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:02:42,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:42,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439138118] [2022-01-18 04:02:42,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439138118] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:42,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498434873] [2022-01-18 04:02:42,557 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:02:42,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:42,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:42,558 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:42,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 04:02:42,577 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 04:02:42,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:02:42,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 04:02:42,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:42,856 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:42,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:43,311 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:43,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498434873] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:43,312 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:43,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 33 [2022-01-18 04:02:43,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206988493] [2022-01-18 04:02:43,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:43,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 04:02:43,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:43,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 04:02:43,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 04:02:43,313 INFO L87 Difference]: Start difference. First operand 31677 states and 77266 transitions. Second operand has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 33 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:48,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:48,281 INFO L93 Difference]: Finished difference Result 58198 states and 139350 transitions. [2022-01-18 04:02:48,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-01-18 04:02:48,281 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 33 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-01-18 04:02:48,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:48,426 INFO L225 Difference]: With dead ends: 58198 [2022-01-18 04:02:48,426 INFO L226 Difference]: Without dead ends: 58059 [2022-01-18 04:02:48,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6410 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2189, Invalid=18117, Unknown=0, NotChecked=0, Total=20306 [2022-01-18 04:02:48,428 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 589 mSDsluCounter, 4159 mSDsCounter, 0 mSdLazyCounter, 3058 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 3939 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 3058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:48,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [589 Valid, 3939 Invalid, 3216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 3058 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 04:02:48,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58059 states. [2022-01-18 04:02:49,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58059 to 49360. [2022-01-18 04:02:49,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49360 states, 49359 states have (on average 2.4268117263315707) internal successors, (119785), 49359 states have internal predecessors, (119785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:49,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49360 states to 49360 states and 119785 transitions. [2022-01-18 04:02:49,500 INFO L78 Accepts]: Start accepts. Automaton has 49360 states and 119785 transitions. Word has length 31 [2022-01-18 04:02:49,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:49,500 INFO L470 AbstractCegarLoop]: Abstraction has 49360 states and 119785 transitions. [2022-01-18 04:02:49,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 33 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:49,500 INFO L276 IsEmpty]: Start isEmpty. Operand 49360 states and 119785 transitions. [2022-01-18 04:02:49,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 04:02:49,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:49,514 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:49,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-01-18 04:02:49,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:49,715 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:49,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:49,715 INFO L85 PathProgramCache]: Analyzing trace with hash 364490902, now seen corresponding path program 24 times [2022-01-18 04:02:49,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:49,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942739641] [2022-01-18 04:02:49,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:49,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:49,878 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:02:49,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:49,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942739641] [2022-01-18 04:02:49,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942739641] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:49,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363815099] [2022-01-18 04:02:49,879 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:02:49,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:49,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:49,880 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:49,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 04:02:49,898 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:02:49,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:02:49,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 04:02:49,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:50,111 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:50,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:50,362 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:50,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363815099] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:50,362 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:50,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2022-01-18 04:02:50,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288451432] [2022-01-18 04:02:50,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:50,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 04:02:50,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:50,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 04:02:50,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2022-01-18 04:02:50,363 INFO L87 Difference]: Start difference. First operand 49360 states and 119785 transitions. Second operand has 24 states, 24 states have (on average 2.625) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:51,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:51,466 INFO L93 Difference]: Finished difference Result 56844 states and 136543 transitions. [2022-01-18 04:02:51,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 04:02:51,467 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.625) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 04:02:51,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:51,727 INFO L225 Difference]: With dead ends: 56844 [2022-01-18 04:02:51,727 INFO L226 Difference]: Without dead ends: 56827 [2022-01-18 04:02:51,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=350, Invalid=2302, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 04:02:51,728 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 346 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:51,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 949 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:02:51,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56827 states. [2022-01-18 04:02:52,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56827 to 50980. [2022-01-18 04:02:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50980 states, 50979 states have (on average 2.429882892955923) internal successors, (123873), 50979 states have internal predecessors, (123873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:52,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50980 states to 50980 states and 123873 transitions. [2022-01-18 04:02:52,786 INFO L78 Accepts]: Start accepts. Automaton has 50980 states and 123873 transitions. Word has length 32 [2022-01-18 04:02:52,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:52,786 INFO L470 AbstractCegarLoop]: Abstraction has 50980 states and 123873 transitions. [2022-01-18 04:02:52,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.625) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:52,786 INFO L276 IsEmpty]: Start isEmpty. Operand 50980 states and 123873 transitions. [2022-01-18 04:02:52,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 04:02:52,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:52,800 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:52,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-01-18 04:02:53,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-01-18 04:02:53,001 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:53,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:53,001 INFO L85 PathProgramCache]: Analyzing trace with hash -870392482, now seen corresponding path program 25 times [2022-01-18 04:02:53,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:53,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418780567] [2022-01-18 04:02:53,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:53,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:53,130 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:02:53,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:53,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418780567] [2022-01-18 04:02:53,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418780567] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:53,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370611442] [2022-01-18 04:02:53,130 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:02:53,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:53,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:53,131 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:53,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-18 04:02:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:53,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 04:02:53,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:53,365 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:53,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:53,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370611442] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:53,624 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:53,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2022-01-18 04:02:53,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107174875] [2022-01-18 04:02:53,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:53,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 04:02:53,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:53,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 04:02:53,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2022-01-18 04:02:53,624 INFO L87 Difference]: Start difference. First operand 50980 states and 123873 transitions. Second operand has 24 states, 24 states have (on average 2.625) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:54,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:54,718 INFO L93 Difference]: Finished difference Result 54768 states and 132232 transitions. [2022-01-18 04:02:54,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 04:02:54,719 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.625) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 04:02:54,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:54,850 INFO L225 Difference]: With dead ends: 54768 [2022-01-18 04:02:54,851 INFO L226 Difference]: Without dead ends: 54751 [2022-01-18 04:02:54,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=282, Invalid=1698, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 04:02:54,851 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 265 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:54,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 699 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:02:54,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54751 states. [2022-01-18 04:02:55,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54751 to 51314. [2022-01-18 04:02:55,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51314 states, 51313 states have (on average 2.42998850193908) internal successors, (124690), 51313 states have internal predecessors, (124690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:55,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51314 states to 51314 states and 124690 transitions. [2022-01-18 04:02:55,814 INFO L78 Accepts]: Start accepts. Automaton has 51314 states and 124690 transitions. Word has length 32 [2022-01-18 04:02:55,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:55,814 INFO L470 AbstractCegarLoop]: Abstraction has 51314 states and 124690 transitions. [2022-01-18 04:02:55,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.625) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:55,814 INFO L276 IsEmpty]: Start isEmpty. Operand 51314 states and 124690 transitions. [2022-01-18 04:02:55,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 04:02:55,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:55,833 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:55,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-01-18 04:02:56,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:56,034 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:56,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:56,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1401588830, now seen corresponding path program 26 times [2022-01-18 04:02:56,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:56,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236215503] [2022-01-18 04:02:56,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:56,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:56,164 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:02:56,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:56,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236215503] [2022-01-18 04:02:56,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236215503] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:56,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388996576] [2022-01-18 04:02:56,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:02:56,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:56,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:56,165 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:56,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-18 04:02:56,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:02:56,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:02:56,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 04:02:56,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:56,404 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:02:56,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:02:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:02:56,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388996576] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:02:56,614 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:02:56,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2022-01-18 04:02:56,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50523199] [2022-01-18 04:02:56,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:02:56,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 04:02:56,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:02:56,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 04:02:56,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2022-01-18 04:02:56,615 INFO L87 Difference]: Start difference. First operand 51314 states and 124690 transitions. Second operand has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:57,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:02:57,970 INFO L93 Difference]: Finished difference Result 64967 states and 156641 transitions. [2022-01-18 04:02:57,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 04:02:57,971 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 04:02:57,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:02:58,117 INFO L225 Difference]: With dead ends: 64967 [2022-01-18 04:02:58,117 INFO L226 Difference]: Without dead ends: 64904 [2022-01-18 04:02:58,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=308, Invalid=2044, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 04:02:58,117 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 277 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:02:58,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 1076 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:02:58,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64904 states. [2022-01-18 04:02:59,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64904 to 57619. [2022-01-18 04:02:59,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57619 states, 57618 states have (on average 2.4426220972612724) internal successors, (140739), 57618 states have internal predecessors, (140739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:59,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57619 states to 57619 states and 140739 transitions. [2022-01-18 04:02:59,308 INFO L78 Accepts]: Start accepts. Automaton has 57619 states and 140739 transitions. Word has length 32 [2022-01-18 04:02:59,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:02:59,309 INFO L470 AbstractCegarLoop]: Abstraction has 57619 states and 140739 transitions. [2022-01-18 04:02:59,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:02:59,309 INFO L276 IsEmpty]: Start isEmpty. Operand 57619 states and 140739 transitions. [2022-01-18 04:02:59,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 04:02:59,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:02:59,326 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:02:59,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-01-18 04:02:59,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:59,526 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:02:59,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:02:59,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1434729592, now seen corresponding path program 27 times [2022-01-18 04:02:59,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:02:59,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826001148] [2022-01-18 04:02:59,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:02:59,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:02:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:02:59,655 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:02:59,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:02:59,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826001148] [2022-01-18 04:02:59,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826001148] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:02:59,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659870996] [2022-01-18 04:02:59,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:02:59,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:02:59,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:02:59,657 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:02:59,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-18 04:02:59,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 04:02:59,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:02:59,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 04:02:59,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:02:59,915 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:02:59,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:03:00,445 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:03:00,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659870996] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:03:00,445 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:03:00,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 27 [2022-01-18 04:03:00,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246660292] [2022-01-18 04:03:00,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:03:00,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 04:03:00,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:03:00,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 04:03:00,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2022-01-18 04:03:00,446 INFO L87 Difference]: Start difference. First operand 57619 states and 140739 transitions. Second operand has 28 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 27 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) [2022-01-18 04:03:02,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:03:02,950 INFO L93 Difference]: Finished difference Result 72626 states and 176105 transitions. [2022-01-18 04:03:02,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-18 04:03:02,951 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 27 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 32 [2022-01-18 04:03:02,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:03:03,303 INFO L225 Difference]: With dead ends: 72626 [2022-01-18 04:03:03,304 INFO L226 Difference]: Without dead ends: 72563 [2022-01-18 04:03:03,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1582 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=915, Invalid=5405, Unknown=0, NotChecked=0, Total=6320 [2022-01-18 04:03:03,304 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 540 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 1803 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 2006 SdHoareTripleChecker+Invalid, 1944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 04:03:03,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [540 Valid, 2006 Invalid, 1944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1803 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 04:03:03,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72563 states. [2022-01-18 04:03:04,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72563 to 64327. [2022-01-18 04:03:04,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64327 states, 64326 states have (on average 2.448683269595498) internal successors, (157514), 64326 states have internal predecessors, (157514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:04,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64327 states to 64327 states and 157514 transitions. [2022-01-18 04:03:04,574 INFO L78 Accepts]: Start accepts. Automaton has 64327 states and 157514 transitions. Word has length 32 [2022-01-18 04:03:04,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:03:04,574 INFO L470 AbstractCegarLoop]: Abstraction has 64327 states and 157514 transitions. [2022-01-18 04:03:04,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 27 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) [2022-01-18 04:03:04,575 INFO L276 IsEmpty]: Start isEmpty. Operand 64327 states and 157514 transitions. [2022-01-18 04:03:04,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 04:03:04,596 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:03:04,596 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:03:04,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-01-18 04:03:04,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-01-18 04:03:04,797 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:03:04,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:03:04,797 INFO L85 PathProgramCache]: Analyzing trace with hash 837251720, now seen corresponding path program 28 times [2022-01-18 04:03:04,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:03:04,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766072353] [2022-01-18 04:03:04,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:03:04,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:03:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:03:04,933 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:03:04,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:03:04,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766072353] [2022-01-18 04:03:04,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766072353] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:03:04,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193245630] [2022-01-18 04:03:04,933 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:03:04,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:03:04,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:03:04,934 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:03:04,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-18 04:03:04,957 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:03:04,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:03:04,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 04:03:04,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:03:05,195 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:03:05,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:03:05,452 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:03:05,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193245630] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:03:05,452 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:03:05,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2022-01-18 04:03:05,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428730989] [2022-01-18 04:03:05,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:03:05,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 04:03:05,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:03:05,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 04:03:05,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-01-18 04:03:05,453 INFO L87 Difference]: Start difference. First operand 64327 states and 157514 transitions. Second operand has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:06,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:03:06,630 INFO L93 Difference]: Finished difference Result 83954 states and 203391 transitions. [2022-01-18 04:03:06,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 04:03:06,630 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 04:03:06,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:03:06,844 INFO L225 Difference]: With dead ends: 83954 [2022-01-18 04:03:06,844 INFO L226 Difference]: Without dead ends: 83893 [2022-01-18 04:03:06,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=237, Invalid=1485, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 04:03:06,844 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 246 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:03:06,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 879 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:03:06,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83893 states. [2022-01-18 04:03:08,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83893 to 73827. [2022-01-18 04:03:08,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73827 states, 73826 states have (on average 2.455435754341289) internal successors, (181275), 73826 states have internal predecessors, (181275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:08,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73827 states to 73827 states and 181275 transitions. [2022-01-18 04:03:08,630 INFO L78 Accepts]: Start accepts. Automaton has 73827 states and 181275 transitions. Word has length 32 [2022-01-18 04:03:08,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:03:08,630 INFO L470 AbstractCegarLoop]: Abstraction has 73827 states and 181275 transitions. [2022-01-18 04:03:08,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:08,630 INFO L276 IsEmpty]: Start isEmpty. Operand 73827 states and 181275 transitions. [2022-01-18 04:03:08,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 04:03:08,654 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:03:08,654 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:03:08,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-01-18 04:03:08,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-01-18 04:03:08,855 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:03:08,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:03:08,856 INFO L85 PathProgramCache]: Analyzing trace with hash -609168994, now seen corresponding path program 29 times [2022-01-18 04:03:08,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:03:08,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223149369] [2022-01-18 04:03:08,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:03:08,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:03:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:03:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:03:08,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:03:08,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223149369] [2022-01-18 04:03:08,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223149369] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:03:08,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111638494] [2022-01-18 04:03:08,992 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:03:08,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:03:08,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:03:08,993 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:03:08,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-18 04:03:09,014 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 04:03:09,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:03:09,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 04:03:09,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:03:09,261 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:03:09,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:03:09,498 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:03:09,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111638494] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:03:09,499 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:03:09,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2022-01-18 04:03:09,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437913917] [2022-01-18 04:03:09,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:03:09,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 04:03:09,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:03:09,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 04:03:09,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2022-01-18 04:03:09,500 INFO L87 Difference]: Start difference. First operand 73827 states and 181275 transitions. Second operand has 24 states, 24 states have (on average 2.625) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:11,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:03:11,196 INFO L93 Difference]: Finished difference Result 79410 states and 194385 transitions. [2022-01-18 04:03:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 04:03:11,197 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.625) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 04:03:11,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:03:11,377 INFO L225 Difference]: With dead ends: 79410 [2022-01-18 04:03:11,377 INFO L226 Difference]: Without dead ends: 79376 [2022-01-18 04:03:11,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=379, Invalid=2591, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 04:03:11,378 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 266 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:03:11,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 962 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:03:11,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79376 states. [2022-01-18 04:03:12,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79376 to 76802. [2022-01-18 04:03:12,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76802 states, 76801 states have (on average 2.4606059816929466) internal successors, (188977), 76801 states have internal predecessors, (188977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:13,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76802 states to 76802 states and 188977 transitions. [2022-01-18 04:03:13,018 INFO L78 Accepts]: Start accepts. Automaton has 76802 states and 188977 transitions. Word has length 32 [2022-01-18 04:03:13,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:03:13,018 INFO L470 AbstractCegarLoop]: Abstraction has 76802 states and 188977 transitions. [2022-01-18 04:03:13,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.625) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:13,018 INFO L276 IsEmpty]: Start isEmpty. Operand 76802 states and 188977 transitions. [2022-01-18 04:03:13,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 04:03:13,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:03:13,040 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:03:13,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-01-18 04:03:13,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-01-18 04:03:13,241 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:03:13,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:03:13,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1086215526, now seen corresponding path program 30 times [2022-01-18 04:03:13,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:03:13,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391331310] [2022-01-18 04:03:13,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:03:13,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:03:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:03:13,364 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:03:13,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:03:13,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391331310] [2022-01-18 04:03:13,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391331310] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:03:13,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270627916] [2022-01-18 04:03:13,364 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:03:13,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:03:13,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:03:13,365 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:03:13,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-18 04:03:13,385 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 04:03:13,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:03:13,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 04:03:13,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:03:13,609 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:03:13,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:03:13,811 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:03:13,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270627916] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:03:13,811 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:03:13,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2022-01-18 04:03:13,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202293808] [2022-01-18 04:03:13,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:03:13,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 04:03:13,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:03:13,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 04:03:13,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2022-01-18 04:03:13,812 INFO L87 Difference]: Start difference. First operand 76802 states and 188977 transitions. Second operand has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:15,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:03:15,054 INFO L93 Difference]: Finished difference Result 81543 states and 199903 transitions. [2022-01-18 04:03:15,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 04:03:15,055 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 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 32 [2022-01-18 04:03:15,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:03:15,235 INFO L225 Difference]: With dead ends: 81543 [2022-01-18 04:03:15,235 INFO L226 Difference]: Without dead ends: 81497 [2022-01-18 04:03:15,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=300, Invalid=1770, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 04:03:15,236 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 242 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:03:15,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 566 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:03:15,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81497 states. [2022-01-18 04:03:16,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81497 to 79939. [2022-01-18 04:03:16,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79939 states, 79938 states have (on average 2.4604318346718705) internal successors, (196682), 79938 states have internal predecessors, (196682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:17,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79939 states to 79939 states and 196682 transitions. [2022-01-18 04:03:17,183 INFO L78 Accepts]: Start accepts. Automaton has 79939 states and 196682 transitions. Word has length 32 [2022-01-18 04:03:17,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:03:17,184 INFO L470 AbstractCegarLoop]: Abstraction has 79939 states and 196682 transitions. [2022-01-18 04:03:17,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:17,184 INFO L276 IsEmpty]: Start isEmpty. Operand 79939 states and 196682 transitions. [2022-01-18 04:03:17,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 04:03:17,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:03:17,208 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:03:17,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-01-18 04:03:17,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-18 04:03:17,411 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:03:17,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:03:17,412 INFO L85 PathProgramCache]: Analyzing trace with hash 505632738, now seen corresponding path program 31 times [2022-01-18 04:03:17,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:03:17,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440547524] [2022-01-18 04:03:17,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:03:17,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:03:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:03:17,541 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:03:17,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:03:17,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440547524] [2022-01-18 04:03:17,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440547524] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:03:17,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173258422] [2022-01-18 04:03:17,541 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:03:17,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:03:17,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:03:17,542 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:03:17,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-18 04:03:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:03:17,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 04:03:17,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:03:17,765 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:03:17,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:03:17,944 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:03:17,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173258422] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:03:17,945 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:03:17,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 21 [2022-01-18 04:03:17,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527272166] [2022-01-18 04:03:17,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:03:17,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 04:03:17,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:03:17,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 04:03:17,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2022-01-18 04:03:17,945 INFO L87 Difference]: Start difference. First operand 79939 states and 196682 transitions. Second operand has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 21 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:18,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:03:18,709 INFO L93 Difference]: Finished difference Result 92793 states and 226902 transitions. [2022-01-18 04:03:18,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 04:03:18,709 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 21 states have internal predecessors, (54), 0 states have call successors, (0), 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 32 [2022-01-18 04:03:18,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:03:19,222 INFO L225 Difference]: With dead ends: 92793 [2022-01-18 04:03:19,222 INFO L226 Difference]: Without dead ends: 92750 [2022-01-18 04:03:19,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2022-01-18 04:03:19,223 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 212 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:03:19,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 720 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:03:19,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92750 states. [2022-01-18 04:03:20,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92750 to 84575. [2022-01-18 04:03:20,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84575 states, 84574 states have (on average 2.4647527608957835) internal successors, (208454), 84574 states have internal predecessors, (208454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:21,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84575 states to 84575 states and 208454 transitions. [2022-01-18 04:03:21,342 INFO L78 Accepts]: Start accepts. Automaton has 84575 states and 208454 transitions. Word has length 32 [2022-01-18 04:03:21,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:03:21,343 INFO L470 AbstractCegarLoop]: Abstraction has 84575 states and 208454 transitions. [2022-01-18 04:03:21,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 21 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:21,343 INFO L276 IsEmpty]: Start isEmpty. Operand 84575 states and 208454 transitions. [2022-01-18 04:03:21,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 04:03:21,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:03:21,370 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:03:21,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-01-18 04:03:21,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-01-18 04:03:21,571 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:03:21,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:03:21,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1012014960, now seen corresponding path program 32 times [2022-01-18 04:03:21,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:03:21,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341066699] [2022-01-18 04:03:21,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:03:21,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:03:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:03:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:03:21,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:03:21,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341066699] [2022-01-18 04:03:21,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341066699] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:03:21,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863804515] [2022-01-18 04:03:21,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:03:21,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:03:21,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:03:21,692 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:03:21,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-18 04:03:21,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:03:21,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:03:21,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 04:03:21,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:03:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:03:21,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:03:22,105 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:03:22,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863804515] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:03:22,106 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:03:22,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 21 [2022-01-18 04:03:22,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170552695] [2022-01-18 04:03:22,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:03:22,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 04:03:22,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:03:22,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 04:03:22,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2022-01-18 04:03:22,106 INFO L87 Difference]: Start difference. First operand 84575 states and 208454 transitions. Second operand has 22 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 21 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:22,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:03:22,890 INFO L93 Difference]: Finished difference Result 95832 states and 234336 transitions. [2022-01-18 04:03:22,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 04:03:22,890 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 21 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 04:03:22,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:03:23,170 INFO L225 Difference]: With dead ends: 95832 [2022-01-18 04:03:23,170 INFO L226 Difference]: Without dead ends: 95790 [2022-01-18 04:03:23,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=951, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 04:03:23,171 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 227 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:03:23,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 750 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:03:23,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95790 states. [2022-01-18 04:03:25,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95790 to 88530. [2022-01-18 04:03:25,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88530 states, 88529 states have (on average 2.4685809169876536) internal successors, (218541), 88529 states have internal predecessors, (218541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:25,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88530 states to 88530 states and 218541 transitions. [2022-01-18 04:03:25,355 INFO L78 Accepts]: Start accepts. Automaton has 88530 states and 218541 transitions. Word has length 32 [2022-01-18 04:03:25,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:03:25,355 INFO L470 AbstractCegarLoop]: Abstraction has 88530 states and 218541 transitions. [2022-01-18 04:03:25,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 21 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:25,355 INFO L276 IsEmpty]: Start isEmpty. Operand 88530 states and 218541 transitions. [2022-01-18 04:03:25,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 04:03:25,384 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:03:25,384 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:03:25,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-01-18 04:03:25,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-01-18 04:03:25,585 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:03:25,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:03:25,585 INFO L85 PathProgramCache]: Analyzing trace with hash 371496324, now seen corresponding path program 33 times [2022-01-18 04:03:25,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:03:25,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540763180] [2022-01-18 04:03:25,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:03:25,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:03:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:03:25,710 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:03:25,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:03:25,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540763180] [2022-01-18 04:03:25,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540763180] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:03:25,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668135527] [2022-01-18 04:03:25,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:03:25,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:03:25,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:03:25,712 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:03:25,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-18 04:03:25,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 04:03:25,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:03:25,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 04:03:25,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:03:26,285 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:03:26,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:03:26,548 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:03:26,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668135527] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:03:26,549 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:03:26,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 24 [2022-01-18 04:03:26,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406768699] [2022-01-18 04:03:26,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:03:26,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 04:03:26,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:03:26,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 04:03:26,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-01-18 04:03:26,550 INFO L87 Difference]: Start difference. First operand 88530 states and 218541 transitions. Second operand has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:28,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:03:28,454 INFO L93 Difference]: Finished difference Result 120751 states and 294981 transitions. [2022-01-18 04:03:28,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 04:03:28,454 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 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 32 [2022-01-18 04:03:28,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:03:28,813 INFO L225 Difference]: With dead ends: 120751 [2022-01-18 04:03:28,813 INFO L226 Difference]: Without dead ends: 120710 [2022-01-18 04:03:28,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=480, Invalid=3060, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 04:03:28,814 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 334 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:03:28,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 1644 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:03:28,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120710 states. [2022-01-18 04:03:30,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120710 to 106952. [2022-01-18 04:03:31,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106952 states, 106951 states have (on average 2.4723003992482537) internal successors, (264415), 106951 states have internal predecessors, (264415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:31,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106952 states to 106952 states and 264415 transitions. [2022-01-18 04:03:31,650 INFO L78 Accepts]: Start accepts. Automaton has 106952 states and 264415 transitions. Word has length 32 [2022-01-18 04:03:31,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:03:31,650 INFO L470 AbstractCegarLoop]: Abstraction has 106952 states and 264415 transitions. [2022-01-18 04:03:31,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:31,651 INFO L276 IsEmpty]: Start isEmpty. Operand 106952 states and 264415 transitions. [2022-01-18 04:03:31,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 04:03:31,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:03:31,687 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:03:31,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-01-18 04:03:31,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-01-18 04:03:31,903 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:03:31,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:03:31,903 INFO L85 PathProgramCache]: Analyzing trace with hash -191983202, now seen corresponding path program 34 times [2022-01-18 04:03:31,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:03:31,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973228184] [2022-01-18 04:03:31,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:03:31,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:03:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:03:32,038 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:03:32,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:03:32,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973228184] [2022-01-18 04:03:32,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973228184] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:03:32,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121614178] [2022-01-18 04:03:32,039 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:03:32,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:03:32,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:03:32,040 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:03:32,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-18 04:03:32,059 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:03:32,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:03:32,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 04:03:32,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:03:32,324 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:03:32,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:03:32,570 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:03:32,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121614178] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:03:32,570 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:03:32,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2022-01-18 04:03:32,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148843966] [2022-01-18 04:03:32,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:03:32,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 04:03:32,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:03:32,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 04:03:32,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2022-01-18 04:03:32,571 INFO L87 Difference]: Start difference. First operand 106952 states and 264415 transitions. Second operand has 24 states, 24 states have (on average 2.625) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:33,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:03:33,502 INFO L93 Difference]: Finished difference Result 113095 states and 278331 transitions. [2022-01-18 04:03:33,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 04:03:33,503 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.625) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 04:03:33,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:03:34,160 INFO L225 Difference]: With dead ends: 113095 [2022-01-18 04:03:34,160 INFO L226 Difference]: Without dead ends: 113078 [2022-01-18 04:03:34,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=1007, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 04:03:34,161 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 133 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:03:34,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 592 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:03:34,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113078 states. [2022-01-18 04:03:36,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113078 to 107349. [2022-01-18 04:03:36,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107349 states, 107348 states have (on average 2.472146663188881) internal successors, (265380), 107348 states have internal predecessors, (265380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:36,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107349 states to 107349 states and 265380 transitions. [2022-01-18 04:03:36,783 INFO L78 Accepts]: Start accepts. Automaton has 107349 states and 265380 transitions. Word has length 32 [2022-01-18 04:03:36,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:03:36,783 INFO L470 AbstractCegarLoop]: Abstraction has 107349 states and 265380 transitions. [2022-01-18 04:03:36,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.625) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:36,783 INFO L276 IsEmpty]: Start isEmpty. Operand 107349 states and 265380 transitions. [2022-01-18 04:03:36,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 04:03:36,817 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:03:36,818 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:03:36,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-01-18 04:03:37,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-01-18 04:03:37,018 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:03:37,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:03:37,019 INFO L85 PathProgramCache]: Analyzing trace with hash -445666353, now seen corresponding path program 6 times [2022-01-18 04:03:37,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:03:37,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006439770] [2022-01-18 04:03:37,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:03:37,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:03:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:03:37,098 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:03:37,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:03:37,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006439770] [2022-01-18 04:03:37,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006439770] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:03:37,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701615523] [2022-01-18 04:03:37,098 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:03:37,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:03:37,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:03:37,099 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:03:37,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-18 04:03:37,120 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 04:03:37,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:03:37,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 04:03:37,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:03:37,279 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:03:37,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:03:37,397 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:03:37,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701615523] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:03:37,398 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:03:37,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2022-01-18 04:03:37,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104927198] [2022-01-18 04:03:37,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:03:37,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 04:03:37,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:03:37,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 04:03:37,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2022-01-18 04:03:37,398 INFO L87 Difference]: Start difference. First operand 107349 states and 265380 transitions. Second operand has 19 states, 19 states have (on average 4.052631578947368) internal successors, (77), 18 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:38,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:03:38,153 INFO L93 Difference]: Finished difference Result 114109 states and 280340 transitions. [2022-01-18 04:03:38,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 04:03:38,154 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.052631578947368) internal successors, (77), 18 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-01-18 04:03:38,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:03:38,436 INFO L225 Difference]: With dead ends: 114109 [2022-01-18 04:03:38,436 INFO L226 Difference]: Without dead ends: 112943 [2022-01-18 04:03:38,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=261, Invalid=731, Unknown=0, NotChecked=0, Total=992 [2022-01-18 04:03:38,437 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 280 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:03:38,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 645 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:03:38,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112943 states. [2022-01-18 04:03:40,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112943 to 107149. [2022-01-18 04:03:40,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107149 states, 107148 states have (on average 2.4727946391906523) internal successors, (264955), 107148 states have internal predecessors, (264955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:41,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107149 states to 107149 states and 264955 transitions. [2022-01-18 04:03:41,167 INFO L78 Accepts]: Start accepts. Automaton has 107149 states and 264955 transitions. Word has length 33 [2022-01-18 04:03:41,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:03:41,167 INFO L470 AbstractCegarLoop]: Abstraction has 107149 states and 264955 transitions. [2022-01-18 04:03:41,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.052631578947368) internal successors, (77), 18 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:41,167 INFO L276 IsEmpty]: Start isEmpty. Operand 107149 states and 264955 transitions. [2022-01-18 04:03:41,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 04:03:41,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:03:41,553 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:03:41,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-01-18 04:03:41,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:03:41,769 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:03:41,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:03:41,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2052471971, now seen corresponding path program 35 times [2022-01-18 04:03:41,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:03:41,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594749628] [2022-01-18 04:03:41,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:03:41,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:03:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:03:41,961 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-18 04:03:41,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:03:41,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594749628] [2022-01-18 04:03:41,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594749628] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:03:41,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427658831] [2022-01-18 04:03:41,962 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:03:41,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:03:41,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:03:41,963 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:03:41,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-18 04:03:41,996 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 04:03:41,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:03:41,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 04:03:41,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:03:42,339 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:03:42,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:03:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:03:42,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427658831] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:03:42,737 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:03:42,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 37 [2022-01-18 04:03:42,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10954791] [2022-01-18 04:03:42,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:03:42,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 04:03:42,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:03:42,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 04:03:42,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1251, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 04:03:42,738 INFO L87 Difference]: Start difference. First operand 107149 states and 264955 transitions. Second operand has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 37 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:50,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:03:50,561 INFO L93 Difference]: Finished difference Result 164170 states and 399330 transitions. [2022-01-18 04:03:50,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2022-01-18 04:03:50,561 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 37 states have internal predecessors, (77), 0 states have call successors, (0), 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 34 [2022-01-18 04:03:50,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:03:51,208 INFO L225 Difference]: With dead ends: 164170 [2022-01-18 04:03:51,208 INFO L226 Difference]: Without dead ends: 164008 [2022-01-18 04:03:51,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11486 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=3507, Invalid=30533, Unknown=0, NotChecked=0, Total=34040 [2022-01-18 04:03:51,210 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 815 mSDsluCounter, 5499 mSDsCounter, 0 mSdLazyCounter, 4062 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 5244 SdHoareTripleChecker+Invalid, 4297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 4062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:03:51,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [815 Valid, 5244 Invalid, 4297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 4062 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 04:03:51,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164008 states. [2022-01-18 04:03:53,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164008 to 145288. [2022-01-18 04:03:53,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145288 states, 145287 states have (on average 2.463902482672228) internal successors, (357973), 145287 states have internal predecessors, (357973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:54,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145288 states to 145288 states and 357973 transitions. [2022-01-18 04:03:54,787 INFO L78 Accepts]: Start accepts. Automaton has 145288 states and 357973 transitions. Word has length 34 [2022-01-18 04:03:54,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:03:54,787 INFO L470 AbstractCegarLoop]: Abstraction has 145288 states and 357973 transitions. [2022-01-18 04:03:54,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 37 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:54,787 INFO L276 IsEmpty]: Start isEmpty. Operand 145288 states and 357973 transitions. [2022-01-18 04:03:54,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 04:03:54,858 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:03:54,858 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:03:54,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-01-18 04:03:55,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:03:55,074 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:03:55,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:03:55,075 INFO L85 PathProgramCache]: Analyzing trace with hash 176267436, now seen corresponding path program 36 times [2022-01-18 04:03:55,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:03:55,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707340462] [2022-01-18 04:03:55,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:03:55,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:03:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:03:55,116 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:03:55,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:03:55,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707340462] [2022-01-18 04:03:55,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707340462] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:03:55,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038215755] [2022-01-18 04:03:55,116 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:03:55,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:03:55,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:03:55,120 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:03:55,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-18 04:03:55,147 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 04:03:55,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:03:55,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 04:03:55,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:03:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:03:55,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:03:55,263 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:03:55,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038215755] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:03:55,263 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:03:55,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2022-01-18 04:03:55,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935942940] [2022-01-18 04:03:55,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:03:55,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:03:55,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:03:55,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:03:55,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:03:55,264 INFO L87 Difference]: Start difference. First operand 145288 states and 357973 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:55,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:03:55,782 INFO L93 Difference]: Finished difference Result 103418 states and 247086 transitions. [2022-01-18 04:03:55,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 04:03:55,782 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 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 35 [2022-01-18 04:03:55,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:03:56,058 INFO L225 Difference]: With dead ends: 103418 [2022-01-18 04:03:56,058 INFO L226 Difference]: Without dead ends: 103418 [2022-01-18 04:03:56,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2022-01-18 04:03:56,058 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 122 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:03:56,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 316 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:03:56,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103418 states. [2022-01-18 04:03:57,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103418 to 71860. [2022-01-18 04:03:58,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71860 states, 71859 states have (on average 2.410581833869105) internal successors, (173222), 71859 states have internal predecessors, (173222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:58,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71860 states to 71860 states and 173222 transitions. [2022-01-18 04:03:58,215 INFO L78 Accepts]: Start accepts. Automaton has 71860 states and 173222 transitions. Word has length 35 [2022-01-18 04:03:58,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:03:58,215 INFO L470 AbstractCegarLoop]: Abstraction has 71860 states and 173222 transitions. [2022-01-18 04:03:58,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:58,215 INFO L276 IsEmpty]: Start isEmpty. Operand 71860 states and 173222 transitions. [2022-01-18 04:03:58,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 04:03:58,246 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:03:58,246 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:03:58,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-01-18 04:03:58,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-01-18 04:03:58,447 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:03:58,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:03:58,448 INFO L85 PathProgramCache]: Analyzing trace with hash 624876916, now seen corresponding path program 37 times [2022-01-18 04:03:58,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:03:58,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924638965] [2022-01-18 04:03:58,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:03:58,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:03:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:03:58,485 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:03:58,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:03:58,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924638965] [2022-01-18 04:03:58,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924638965] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:03:58,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507528198] [2022-01-18 04:03:58,486 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:03:58,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:03:58,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:03:58,487 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:03:58,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-18 04:03:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:03:58,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 04:03:58,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:03:58,578 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:03:58,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:03:58,614 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:03:58,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507528198] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:03:58,614 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:03:58,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2022-01-18 04:03:58,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588697502] [2022-01-18 04:03:58,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:03:58,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:03:58,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:03:58,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:03:58,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:03:58,615 INFO L87 Difference]: Start difference. First operand 71860 states and 173222 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:03:58,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:03:58,913 INFO L93 Difference]: Finished difference Result 65581 states and 153600 transitions. [2022-01-18 04:03:58,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 04:03:58,913 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 0 states have call successors, (0), 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 35 [2022-01-18 04:03:58,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:03:59,035 INFO L225 Difference]: With dead ends: 65581 [2022-01-18 04:03:59,035 INFO L226 Difference]: Without dead ends: 65511 [2022-01-18 04:03:59,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2022-01-18 04:03:59,036 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 213 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:03:59,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 204 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:03:59,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65511 states. [2022-01-18 04:04:00,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65511 to 57103. [2022-01-18 04:04:00,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57103 states, 57102 states have (on average 2.3572904626808167) internal successors, (134606), 57102 states have internal predecessors, (134606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:00,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57103 states to 57103 states and 134606 transitions. [2022-01-18 04:04:00,274 INFO L78 Accepts]: Start accepts. Automaton has 57103 states and 134606 transitions. Word has length 35 [2022-01-18 04:04:00,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:04:00,274 INFO L470 AbstractCegarLoop]: Abstraction has 57103 states and 134606 transitions. [2022-01-18 04:04:00,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:00,274 INFO L276 IsEmpty]: Start isEmpty. Operand 57103 states and 134606 transitions. [2022-01-18 04:04:00,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 04:04:00,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:04:00,295 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:04:00,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-01-18 04:04:00,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-01-18 04:04:00,496 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:04:00,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:04:00,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1359790695, now seen corresponding path program 38 times [2022-01-18 04:04:00,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:04:00,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131858993] [2022-01-18 04:04:00,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:04:00,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:04:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:04:00,518 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:04:00,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:04:00,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131858993] [2022-01-18 04:04:00,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131858993] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:04:00,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324184265] [2022-01-18 04:04:00,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:04:00,519 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:04:00,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:04:00,520 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:04:00,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-01-18 04:04:00,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:04:00,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:04:00,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:04:00,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:04:00,587 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:04:00,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:04:00,633 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:04:00,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324184265] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:04:00,634 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:04:00,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-18 04:04:00,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145245418] [2022-01-18 04:04:00,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:04:00,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 04:04:00,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:04:00,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 04:04:00,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:04:00,634 INFO L87 Difference]: Start difference. First operand 57103 states and 134606 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:00,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:04:00,940 INFO L93 Difference]: Finished difference Result 67716 states and 158828 transitions. [2022-01-18 04:04:00,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 04:04:00,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-01-18 04:04:00,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:04:01,082 INFO L225 Difference]: With dead ends: 67716 [2022-01-18 04:04:01,082 INFO L226 Difference]: Without dead ends: 67716 [2022-01-18 04:04:01,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:04:01,083 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 115 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:04:01,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 78 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:04:01,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67716 states. [2022-01-18 04:04:02,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67716 to 66000. [2022-01-18 04:04:02,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66000 states, 65999 states have (on average 2.363353990211973) internal successors, (155979), 65999 states have internal predecessors, (155979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:02,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66000 states to 66000 states and 155979 transitions. [2022-01-18 04:04:02,738 INFO L78 Accepts]: Start accepts. Automaton has 66000 states and 155979 transitions. Word has length 35 [2022-01-18 04:04:02,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:04:02,738 INFO L470 AbstractCegarLoop]: Abstraction has 66000 states and 155979 transitions. [2022-01-18 04:04:02,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:02,738 INFO L276 IsEmpty]: Start isEmpty. Operand 66000 states and 155979 transitions. [2022-01-18 04:04:02,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 04:04:02,759 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:04:02,759 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:04:02,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-01-18 04:04:02,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-01-18 04:04:02,959 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:04:02,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:04:02,960 INFO L85 PathProgramCache]: Analyzing trace with hash -682736063, now seen corresponding path program 39 times [2022-01-18 04:04:02,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:04:02,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539920883] [2022-01-18 04:04:02,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:04:02,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:04:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:04:02,988 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:04:02,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:04:02,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539920883] [2022-01-18 04:04:02,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539920883] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:04:02,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460133811] [2022-01-18 04:04:02,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:04:02,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:04:02,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:04:02,989 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:04:02,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-01-18 04:04:03,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 04:04:03,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:04:03,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:04:03,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:04:03,053 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:04:03,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:04:03,101 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:04:03,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460133811] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:04:03,101 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:04:03,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-18 04:04:03,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528845996] [2022-01-18 04:04:03,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:04:03,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 04:04:03,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:04:03,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 04:04:03,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:04:03,102 INFO L87 Difference]: Start difference. First operand 66000 states and 155979 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:03,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:04:03,410 INFO L93 Difference]: Finished difference Result 68361 states and 159847 transitions. [2022-01-18 04:04:03,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 04:04:03,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-01-18 04:04:03,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:04:03,568 INFO L225 Difference]: With dead ends: 68361 [2022-01-18 04:04:03,569 INFO L226 Difference]: Without dead ends: 68358 [2022-01-18 04:04:03,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:04:03,569 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 115 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:04:03,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 93 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:04:03,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68358 states. [2022-01-18 04:04:04,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68358 to 66000. [2022-01-18 04:04:04,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66000 states, 65999 states have (on average 2.362596402975803) internal successors, (155929), 65999 states have internal predecessors, (155929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:04,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66000 states to 66000 states and 155929 transitions. [2022-01-18 04:04:04,831 INFO L78 Accepts]: Start accepts. Automaton has 66000 states and 155929 transitions. Word has length 35 [2022-01-18 04:04:04,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:04:04,831 INFO L470 AbstractCegarLoop]: Abstraction has 66000 states and 155929 transitions. [2022-01-18 04:04:04,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:04,831 INFO L276 IsEmpty]: Start isEmpty. Operand 66000 states and 155929 transitions. [2022-01-18 04:04:04,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 04:04:04,853 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:04:04,853 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:04:04,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-01-18 04:04:05,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:04:05,054 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:04:05,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:04:05,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1974658777, now seen corresponding path program 40 times [2022-01-18 04:04:05,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:04:05,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190144948] [2022-01-18 04:04:05,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:04:05,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:04:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:04:05,081 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:04:05,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:04:05,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190144948] [2022-01-18 04:04:05,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190144948] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:04:05,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981800369] [2022-01-18 04:04:05,082 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:04:05,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:04:05,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:04:05,083 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:04:05,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-01-18 04:04:05,105 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:04:05,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:04:05,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:04:05,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:04:05,153 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:04:05,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:04:05,201 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:04:05,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981800369] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:04:05,202 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:04:05,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2022-01-18 04:04:05,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937474310] [2022-01-18 04:04:05,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:04:05,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:04:05,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:04:05,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:04:05,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:04:05,202 INFO L87 Difference]: Start difference. First operand 66000 states and 155929 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:05,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:04:05,526 INFO L93 Difference]: Finished difference Result 68385 states and 159843 transitions. [2022-01-18 04:04:05,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 04:04:05,526 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-01-18 04:04:05,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:04:06,111 INFO L225 Difference]: With dead ends: 68385 [2022-01-18 04:04:06,111 INFO L226 Difference]: Without dead ends: 68373 [2022-01-18 04:04:06,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:04:06,111 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 135 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:04:06,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 106 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:04:06,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68373 states. [2022-01-18 04:04:07,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68373 to 66000. [2022-01-18 04:04:07,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66000 states, 65999 states have (on average 2.3606721313959302) internal successors, (155802), 65999 states have internal predecessors, (155802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:07,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66000 states to 66000 states and 155802 transitions. [2022-01-18 04:04:07,359 INFO L78 Accepts]: Start accepts. Automaton has 66000 states and 155802 transitions. Word has length 35 [2022-01-18 04:04:07,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:04:07,359 INFO L470 AbstractCegarLoop]: Abstraction has 66000 states and 155802 transitions. [2022-01-18 04:04:07,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:07,360 INFO L276 IsEmpty]: Start isEmpty. Operand 66000 states and 155802 transitions. [2022-01-18 04:04:07,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 04:04:07,385 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:04:07,385 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:04:07,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-01-18 04:04:07,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-01-18 04:04:07,586 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:04:07,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:04:07,586 INFO L85 PathProgramCache]: Analyzing trace with hash 919304957, now seen corresponding path program 41 times [2022-01-18 04:04:07,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:04:07,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436765292] [2022-01-18 04:04:07,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:04:07,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:04:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:04:07,616 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:04:07,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:04:07,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436765292] [2022-01-18 04:04:07,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436765292] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:04:07,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103269949] [2022-01-18 04:04:07,616 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:04:07,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:04:07,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:04:07,617 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:04:07,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-01-18 04:04:07,637 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 04:04:07,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:04:07,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:04:07,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:04:07,685 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:04:07,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:04:07,731 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:04:07,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103269949] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:04:07,731 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:04:07,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-01-18 04:04:07,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487089181] [2022-01-18 04:04:07,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:04:07,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 04:04:07,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:04:07,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 04:04:07,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-18 04:04:07,732 INFO L87 Difference]: Start difference. First operand 66000 states and 155802 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:08,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:04:08,025 INFO L93 Difference]: Finished difference Result 68349 states and 159650 transitions. [2022-01-18 04:04:08,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 04:04:08,025 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-01-18 04:04:08,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:04:08,150 INFO L225 Difference]: With dead ends: 68349 [2022-01-18 04:04:08,150 INFO L226 Difference]: Without dead ends: 68326 [2022-01-18 04:04:08,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:04:08,150 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 117 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:04:08,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 124 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:04:08,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68326 states. [2022-01-18 04:04:09,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68326 to 66018. [2022-01-18 04:04:09,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66018 states, 66017 states have (on average 2.3601799536483026) internal successors, (155812), 66017 states have internal predecessors, (155812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:09,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66018 states to 66018 states and 155812 transitions. [2022-01-18 04:04:09,346 INFO L78 Accepts]: Start accepts. Automaton has 66018 states and 155812 transitions. Word has length 35 [2022-01-18 04:04:09,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:04:09,346 INFO L470 AbstractCegarLoop]: Abstraction has 66018 states and 155812 transitions. [2022-01-18 04:04:09,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:09,346 INFO L276 IsEmpty]: Start isEmpty. Operand 66018 states and 155812 transitions. [2022-01-18 04:04:09,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:04:09,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:04:09,375 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:04:09,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-01-18 04:04:09,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:04:09,576 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:04:09,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:04:09,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1808077410, now seen corresponding path program 42 times [2022-01-18 04:04:09,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:04:09,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595823406] [2022-01-18 04:04:09,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:04:09,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:04:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:04:09,779 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:04:09,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:04:09,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595823406] [2022-01-18 04:04:09,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595823406] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:04:09,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545901721] [2022-01-18 04:04:09,779 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:04:09,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:04:09,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:04:09,784 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:04:09,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-01-18 04:04:09,804 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 04:04:09,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:04:09,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:04:09,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:04:10,113 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:04:10,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:04:10,443 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:04:10,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545901721] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:04:10,443 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:04:10,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 30 [2022-01-18 04:04:10,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650292598] [2022-01-18 04:04:10,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:04:10,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 04:04:10,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:04:10,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 04:04:10,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=823, Unknown=0, NotChecked=0, Total=930 [2022-01-18 04:04:10,444 INFO L87 Difference]: Start difference. First operand 66018 states and 155812 transitions. Second operand has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:04:13,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:04:13,041 INFO L93 Difference]: Finished difference Result 80160 states and 188249 transitions. [2022-01-18 04:04:13,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-18 04:04:13,041 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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 38 [2022-01-18 04:04:13,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:04:13,249 INFO L225 Difference]: With dead ends: 80160 [2022-01-18 04:04:13,249 INFO L226 Difference]: Without dead ends: 80143 [2022-01-18 04:04:13,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1329 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=536, Invalid=5164, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 04:04:13,252 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 470 mSDsluCounter, 2974 mSDsCounter, 0 mSdLazyCounter, 2365 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 2724 SdHoareTripleChecker+Invalid, 2464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:04:13,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 2724 Invalid, 2464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2365 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 04:04:13,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80143 states. [2022-01-18 04:04:14,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80143 to 68227. [2022-01-18 04:04:14,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68227 states, 68226 states have (on average 2.3634538152610443) internal successors, (161249), 68226 states have internal predecessors, (161249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:14,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68227 states to 68227 states and 161249 transitions. [2022-01-18 04:04:14,708 INFO L78 Accepts]: Start accepts. Automaton has 68227 states and 161249 transitions. Word has length 38 [2022-01-18 04:04:14,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:04:14,708 INFO L470 AbstractCegarLoop]: Abstraction has 68227 states and 161249 transitions. [2022-01-18 04:04:14,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:04:14,708 INFO L276 IsEmpty]: Start isEmpty. Operand 68227 states and 161249 transitions. [2022-01-18 04:04:14,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:04:14,738 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:04:14,738 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:04:14,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-01-18 04:04:14,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-01-18 04:04:14,939 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:04:14,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:04:14,939 INFO L85 PathProgramCache]: Analyzing trace with hash 283993190, now seen corresponding path program 43 times [2022-01-18 04:04:14,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:04:14,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987760652] [2022-01-18 04:04:14,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:04:14,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:04:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:04:15,121 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:04:15,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:04:15,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987760652] [2022-01-18 04:04:15,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987760652] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:04:15,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059858760] [2022-01-18 04:04:15,121 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:04:15,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:04:15,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:04:15,122 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:04:15,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-01-18 04:04:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:04:15,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:04:15,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:04:15,687 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:04:15,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:04:16,024 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:04:16,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059858760] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:04:16,024 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:04:16,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 30 [2022-01-18 04:04:16,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157242397] [2022-01-18 04:04:16,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:04:16,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 04:04:16,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:04:16,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 04:04:16,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=823, Unknown=0, NotChecked=0, Total=930 [2022-01-18 04:04:16,025 INFO L87 Difference]: Start difference. First operand 68227 states and 161249 transitions. Second operand has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:04:18,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:04:18,056 INFO L93 Difference]: Finished difference Result 78845 states and 185508 transitions. [2022-01-18 04:04:18,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 04:04:18,056 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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 38 [2022-01-18 04:04:18,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:04:18,251 INFO L225 Difference]: With dead ends: 78845 [2022-01-18 04:04:18,251 INFO L226 Difference]: Without dead ends: 78828 [2022-01-18 04:04:18,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1254 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=557, Invalid=4845, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 04:04:18,252 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 425 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:04:18,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [425 Valid, 1778 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1424 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:04:18,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78828 states. [2022-01-18 04:04:19,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78828 to 69484. [2022-01-18 04:04:19,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69484 states, 69483 states have (on average 2.3646359541182735) internal successors, (164302), 69483 states have internal predecessors, (164302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:19,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69484 states to 69484 states and 164302 transitions. [2022-01-18 04:04:19,560 INFO L78 Accepts]: Start accepts. Automaton has 69484 states and 164302 transitions. Word has length 38 [2022-01-18 04:04:19,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:04:19,561 INFO L470 AbstractCegarLoop]: Abstraction has 69484 states and 164302 transitions. [2022-01-18 04:04:19,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:04:19,561 INFO L276 IsEmpty]: Start isEmpty. Operand 69484 states and 164302 transitions. [2022-01-18 04:04:19,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:04:19,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:04:19,586 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:04:19,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-01-18 04:04:19,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-01-18 04:04:19,787 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:04:19,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:04:19,787 INFO L85 PathProgramCache]: Analyzing trace with hash -2130240098, now seen corresponding path program 44 times [2022-01-18 04:04:19,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:04:19,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523742734] [2022-01-18 04:04:19,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:04:19,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:04:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:04:19,984 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:04:19,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:04:20,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523742734] [2022-01-18 04:04:20,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523742734] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:04:20,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957705168] [2022-01-18 04:04:20,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:04:20,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:04:20,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:04:20,202 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:04:20,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-01-18 04:04:20,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:04:20,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:04:20,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:04:20,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:04:20,520 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:04:20,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:04:20,900 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:04:20,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957705168] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:04:20,900 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:04:20,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 30 [2022-01-18 04:04:20,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137545630] [2022-01-18 04:04:20,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:04:20,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 04:04:20,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:04:20,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 04:04:20,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2022-01-18 04:04:20,901 INFO L87 Difference]: Start difference. First operand 69484 states and 164302 transitions. Second operand has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:04:23,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:04:23,862 INFO L93 Difference]: Finished difference Result 80472 states and 189381 transitions. [2022-01-18 04:04:23,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 04:04:23,863 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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 38 [2022-01-18 04:04:23,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:04:24,073 INFO L225 Difference]: With dead ends: 80472 [2022-01-18 04:04:24,073 INFO L226 Difference]: Without dead ends: 80455 [2022-01-18 04:04:24,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2241 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=798, Invalid=7758, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 04:04:24,075 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 493 mSDsluCounter, 2473 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 2387 SdHoareTripleChecker+Invalid, 2112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 04:04:24,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 2387 Invalid, 2112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1986 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 04:04:24,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80455 states. [2022-01-18 04:04:25,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80455 to 73196. [2022-01-18 04:04:25,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73196 states, 73195 states have (on average 2.3706127467723204) internal successors, (173517), 73195 states have internal predecessors, (173517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:25,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73196 states to 73196 states and 173517 transitions. [2022-01-18 04:04:25,711 INFO L78 Accepts]: Start accepts. Automaton has 73196 states and 173517 transitions. Word has length 38 [2022-01-18 04:04:25,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:04:25,711 INFO L470 AbstractCegarLoop]: Abstraction has 73196 states and 173517 transitions. [2022-01-18 04:04:25,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:04:25,711 INFO L276 IsEmpty]: Start isEmpty. Operand 73196 states and 173517 transitions. [2022-01-18 04:04:25,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:04:25,743 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:04:25,743 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:04:25,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-01-18 04:04:25,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:04:25,943 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:04:25,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:04:25,944 INFO L85 PathProgramCache]: Analyzing trace with hash 726839142, now seen corresponding path program 45 times [2022-01-18 04:04:25,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:04:25,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540667855] [2022-01-18 04:04:25,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:04:25,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:04:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:04:26,122 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:04:26,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:04:26,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540667855] [2022-01-18 04:04:26,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540667855] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:04:26,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77449977] [2022-01-18 04:04:26,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:04:26,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:04:26,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:04:26,125 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:04:26,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-01-18 04:04:26,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 04:04:26,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:04:26,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:04:26,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:04:26,447 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:04:26,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:04:26,848 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:04:26,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77449977] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:04:26,848 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:04:26,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 11] total 33 [2022-01-18 04:04:26,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384155069] [2022-01-18 04:04:26,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:04:26,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 04:04:26,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:04:26,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 04:04:26,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1002, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 04:04:26,849 INFO L87 Difference]: Start difference. First operand 73196 states and 173517 transitions. Second operand has 34 states, 34 states have (on average 2.735294117647059) internal successors, (93), 33 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:33,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:04:33,375 INFO L93 Difference]: Finished difference Result 104966 states and 245995 transitions. [2022-01-18 04:04:33,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-01-18 04:04:33,375 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.735294117647059) internal successors, (93), 33 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-01-18 04:04:33,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:04:33,638 INFO L225 Difference]: With dead ends: 104966 [2022-01-18 04:04:33,639 INFO L226 Difference]: Without dead ends: 104812 [2022-01-18 04:04:33,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9758 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2576, Invalid=26494, Unknown=0, NotChecked=0, Total=29070 [2022-01-18 04:04:33,642 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 885 mSDsluCounter, 3649 mSDsCounter, 0 mSdLazyCounter, 3264 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 3414 SdHoareTripleChecker+Invalid, 3510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 3264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:04:33,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 3414 Invalid, 3510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 3264 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 04:04:33,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104812 states. [2022-01-18 04:04:35,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104812 to 80383. [2022-01-18 04:04:35,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80383 states, 80382 states have (on average 2.3753949889278694) internal successors, (190939), 80382 states have internal predecessors, (190939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:35,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80383 states to 80383 states and 190939 transitions. [2022-01-18 04:04:35,478 INFO L78 Accepts]: Start accepts. Automaton has 80383 states and 190939 transitions. Word has length 38 [2022-01-18 04:04:35,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:04:35,478 INFO L470 AbstractCegarLoop]: Abstraction has 80383 states and 190939 transitions. [2022-01-18 04:04:35,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.735294117647059) internal successors, (93), 33 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:35,478 INFO L276 IsEmpty]: Start isEmpty. Operand 80383 states and 190939 transitions. [2022-01-18 04:04:35,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:04:35,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:04:35,507 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:04:35,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-01-18 04:04:35,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-01-18 04:04:35,708 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:04:35,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:04:35,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1924591970, now seen corresponding path program 46 times [2022-01-18 04:04:35,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:04:35,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304950980] [2022-01-18 04:04:35,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:04:35,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:04:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:04:35,862 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:04:35,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:04:35,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304950980] [2022-01-18 04:04:35,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304950980] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:04:35,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199807667] [2022-01-18 04:04:35,862 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:04:35,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:04:35,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:04:35,863 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:04:35,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-01-18 04:04:35,882 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:04:35,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:04:35,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:04:35,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:04:36,178 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:04:36,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:04:36,503 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:04:36,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199807667] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:04:36,503 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:04:36,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 30 [2022-01-18 04:04:36,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398583757] [2022-01-18 04:04:36,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:04:36,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 04:04:36,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:04:36,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 04:04:36,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2022-01-18 04:04:36,504 INFO L87 Difference]: Start difference. First operand 80383 states and 190939 transitions. Second operand has 31 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 30 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) [2022-01-18 04:04:39,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:04:39,198 INFO L93 Difference]: Finished difference Result 97594 states and 230104 transitions. [2022-01-18 04:04:39,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 04:04:39,199 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 30 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 38 [2022-01-18 04:04:39,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:04:39,393 INFO L225 Difference]: With dead ends: 97594 [2022-01-18 04:04:39,394 INFO L226 Difference]: Without dead ends: 97527 [2022-01-18 04:04:39,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1785 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=611, Invalid=6195, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 04:04:39,394 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 371 mSDsluCounter, 2922 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 2779 SdHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 04:04:39,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 2779 Invalid, 2120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2031 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 04:04:39,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97527 states. [2022-01-18 04:04:40,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97527 to 84100. [2022-01-18 04:04:40,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84100 states, 84099 states have (on average 2.3742375057967395) internal successors, (199671), 84099 states have internal predecessors, (199671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:41,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84100 states to 84100 states and 199671 transitions. [2022-01-18 04:04:41,150 INFO L78 Accepts]: Start accepts. Automaton has 84100 states and 199671 transitions. Word has length 38 [2022-01-18 04:04:41,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:04:41,150 INFO L470 AbstractCegarLoop]: Abstraction has 84100 states and 199671 transitions. [2022-01-18 04:04:41,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 30 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) [2022-01-18 04:04:41,150 INFO L276 IsEmpty]: Start isEmpty. Operand 84100 states and 199671 transitions. [2022-01-18 04:04:41,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:04:41,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:04:41,186 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:04:41,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-01-18 04:04:41,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-01-18 04:04:41,386 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:04:41,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:04:41,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1690483302, now seen corresponding path program 47 times [2022-01-18 04:04:41,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:04:41,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163772934] [2022-01-18 04:04:41,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:04:41,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:04:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:04:41,545 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:04:41,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:04:41,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163772934] [2022-01-18 04:04:41,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163772934] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:04:41,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275306265] [2022-01-18 04:04:41,546 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:04:41,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:04:41,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:04:41,547 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:04:41,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-01-18 04:04:41,566 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-01-18 04:04:41,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:04:41,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:04:41,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:04:41,895 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:04:41,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:04:42,514 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:04:42,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275306265] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:04:42,515 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:04:42,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 31 [2022-01-18 04:04:42,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58095539] [2022-01-18 04:04:42,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:04:42,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 04:04:42,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:04:42,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 04:04:42,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=884, Unknown=0, NotChecked=0, Total=992 [2022-01-18 04:04:42,516 INFO L87 Difference]: Start difference. First operand 84100 states and 199671 transitions. Second operand has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:45,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:04:45,466 INFO L93 Difference]: Finished difference Result 105315 states and 248410 transitions. [2022-01-18 04:04:45,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 04:04:45,466 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 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 38 [2022-01-18 04:04:45,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:04:45,710 INFO L225 Difference]: With dead ends: 105315 [2022-01-18 04:04:45,710 INFO L226 Difference]: Without dead ends: 105242 [2022-01-18 04:04:45,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2076 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=656, Invalid=7000, Unknown=0, NotChecked=0, Total=7656 [2022-01-18 04:04:45,711 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 446 mSDsluCounter, 2951 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 2833 SdHoareTripleChecker+Invalid, 2291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 04:04:45,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 2833 Invalid, 2291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2166 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 04:04:45,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105242 states. [2022-01-18 04:04:47,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105242 to 89668. [2022-01-18 04:04:47,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89668 states, 89667 states have (on average 2.3797383652848874) internal successors, (213384), 89667 states have internal predecessors, (213384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:47,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89668 states to 89668 states and 213384 transitions. [2022-01-18 04:04:47,663 INFO L78 Accepts]: Start accepts. Automaton has 89668 states and 213384 transitions. Word has length 38 [2022-01-18 04:04:47,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:04:47,663 INFO L470 AbstractCegarLoop]: Abstraction has 89668 states and 213384 transitions. [2022-01-18 04:04:47,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:47,663 INFO L276 IsEmpty]: Start isEmpty. Operand 89668 states and 213384 transitions. [2022-01-18 04:04:47,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:04:47,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:04:47,706 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:04:47,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-01-18 04:04:47,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:04:47,906 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:04:47,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:04:47,907 INFO L85 PathProgramCache]: Analyzing trace with hash -100519944, now seen corresponding path program 48 times [2022-01-18 04:04:47,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:04:47,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119353425] [2022-01-18 04:04:47,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:04:47,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:04:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:04:48,091 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:04:48,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:04:48,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119353425] [2022-01-18 04:04:48,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119353425] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:04:48,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058384336] [2022-01-18 04:04:48,092 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:04:48,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:04:48,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:04:48,093 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:04:48,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-01-18 04:04:48,113 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 04:04:48,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:04:48,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:04:48,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:04:48,392 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:04:48,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:04:48,750 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:04:48,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058384336] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:04:48,750 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:04:48,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 30 [2022-01-18 04:04:48,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059355904] [2022-01-18 04:04:48,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:04:48,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 04:04:48,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:04:48,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 04:04:48,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=824, Unknown=0, NotChecked=0, Total=930 [2022-01-18 04:04:48,751 INFO L87 Difference]: Start difference. First operand 89668 states and 213384 transitions. Second operand has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:04:51,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:04:51,459 INFO L93 Difference]: Finished difference Result 105589 states and 250362 transitions. [2022-01-18 04:04:51,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-18 04:04:51,459 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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 38 [2022-01-18 04:04:51,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:04:51,723 INFO L225 Difference]: With dead ends: 105589 [2022-01-18 04:04:51,723 INFO L226 Difference]: Without dead ends: 105572 [2022-01-18 04:04:51,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1689 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=650, Invalid=6156, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 04:04:51,724 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 461 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 1714 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 1815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:04:51,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 1995 Invalid, 1815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1714 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:04:51,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105572 states. [2022-01-18 04:04:53,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105572 to 92721. [2022-01-18 04:04:53,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92721 states, 92720 states have (on average 2.3839516824849007) internal successors, (221040), 92720 states have internal predecessors, (221040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:53,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92721 states to 92721 states and 221040 transitions. [2022-01-18 04:04:53,844 INFO L78 Accepts]: Start accepts. Automaton has 92721 states and 221040 transitions. Word has length 38 [2022-01-18 04:04:53,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:04:53,844 INFO L470 AbstractCegarLoop]: Abstraction has 92721 states and 221040 transitions. [2022-01-18 04:04:53,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:04:53,844 INFO L276 IsEmpty]: Start isEmpty. Operand 92721 states and 221040 transitions. [2022-01-18 04:04:53,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:04:53,883 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:04:53,884 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:04:53,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-01-18 04:04:54,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:04:54,084 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:04:54,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:04:54,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1095467792, now seen corresponding path program 49 times [2022-01-18 04:04:54,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:04:54,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745063279] [2022-01-18 04:04:54,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:04:54,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:04:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:04:54,266 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:04:54,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:04:54,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745063279] [2022-01-18 04:04:54,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745063279] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:04:54,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117177408] [2022-01-18 04:04:54,266 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:04:54,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:04:54,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:04:54,268 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:04:54,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-01-18 04:04:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:04:54,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:04:54,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:04:54,565 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:04:54,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:04:54,905 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:04:54,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117177408] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:04:54,905 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:04:54,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 30 [2022-01-18 04:04:54,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59003356] [2022-01-18 04:04:54,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:04:54,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 04:04:54,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:04:54,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 04:04:54,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2022-01-18 04:04:54,906 INFO L87 Difference]: Start difference. First operand 92721 states and 221040 transitions. Second operand has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:04:56,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:04:56,696 INFO L93 Difference]: Finished difference Result 105951 states and 251639 transitions. [2022-01-18 04:04:56,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 04:04:56,696 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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 38 [2022-01-18 04:04:56,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:04:56,920 INFO L225 Difference]: With dead ends: 105951 [2022-01-18 04:04:56,920 INFO L226 Difference]: Without dead ends: 105934 [2022-01-18 04:04:56,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=382, Invalid=3524, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 04:04:56,921 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 302 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2131 SdHoareTripleChecker+Invalid, 1747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:04:56,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 2131 Invalid, 1747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1682 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:04:57,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105934 states. [2022-01-18 04:04:58,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105934 to 94088. [2022-01-18 04:04:58,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94088 states, 94087 states have (on average 2.384527086632585) internal successors, (224353), 94087 states have internal predecessors, (224353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:04:58,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94088 states to 94088 states and 224353 transitions. [2022-01-18 04:04:58,867 INFO L78 Accepts]: Start accepts. Automaton has 94088 states and 224353 transitions. Word has length 38 [2022-01-18 04:04:58,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:04:58,867 INFO L470 AbstractCegarLoop]: Abstraction has 94088 states and 224353 transitions. [2022-01-18 04:04:58,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:04:58,867 INFO L276 IsEmpty]: Start isEmpty. Operand 94088 states and 224353 transitions. [2022-01-18 04:04:58,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:04:58,906 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:04:58,906 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:04:58,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-01-18 04:04:59,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:04:59,111 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:04:59,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:04:59,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1318765496, now seen corresponding path program 50 times [2022-01-18 04:04:59,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:04:59,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422789400] [2022-01-18 04:04:59,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:04:59,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:04:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:04:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:04:59,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:04:59,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422789400] [2022-01-18 04:04:59,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422789400] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:04:59,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717646227] [2022-01-18 04:04:59,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:04:59,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:04:59,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:04:59,280 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:04:59,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-01-18 04:04:59,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:04:59,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:04:59,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:04:59,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:04:59,573 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:04:59,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:04:59,905 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:04:59,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717646227] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:04:59,906 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:04:59,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 30 [2022-01-18 04:04:59,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681192508] [2022-01-18 04:04:59,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:04:59,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 04:04:59,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:04:59,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 04:04:59,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2022-01-18 04:04:59,907 INFO L87 Difference]: Start difference. First operand 94088 states and 224353 transitions. Second operand has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:05:02,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:05:02,690 INFO L93 Difference]: Finished difference Result 104357 states and 247663 transitions. [2022-01-18 04:05:02,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-18 04:05:02,690 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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 38 [2022-01-18 04:05:02,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:05:02,934 INFO L225 Difference]: With dead ends: 104357 [2022-01-18 04:05:02,934 INFO L226 Difference]: Without dead ends: 104340 [2022-01-18 04:05:02,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1597 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=590, Invalid=6052, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 04:05:02,935 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 354 mSDsluCounter, 2247 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 04:05:02,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 2185 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 04:05:03,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104340 states. [2022-01-18 04:05:04,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104340 to 96779. [2022-01-18 04:05:04,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96779 states, 96778 states have (on average 2.3871231064911447) internal successors, (231021), 96778 states have internal predecessors, (231021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:05:05,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96779 states to 96779 states and 231021 transitions. [2022-01-18 04:05:05,113 INFO L78 Accepts]: Start accepts. Automaton has 96779 states and 231021 transitions. Word has length 38 [2022-01-18 04:05:05,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:05:05,114 INFO L470 AbstractCegarLoop]: Abstraction has 96779 states and 231021 transitions. [2022-01-18 04:05:05,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:05:05,114 INFO L276 IsEmpty]: Start isEmpty. Operand 96779 states and 231021 transitions. [2022-01-18 04:05:05,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:05:05,156 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:05:05,156 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:05:05,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-01-18 04:05:05,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-01-18 04:05:05,358 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:05:05,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:05:05,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1793009392, now seen corresponding path program 51 times [2022-01-18 04:05:05,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:05:05,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265527447] [2022-01-18 04:05:05,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:05:05,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:05:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:05:05,535 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:05:05,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:05:05,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265527447] [2022-01-18 04:05:05,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265527447] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:05:05,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545720804] [2022-01-18 04:05:05,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:05:05,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:05:05,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:05:05,536 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:05:05,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-01-18 04:05:05,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 04:05:05,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:05:05,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:05:05,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:05:05,880 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:05:05,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:05:06,296 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:05:06,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545720804] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:05:06,297 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:05:06,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 34 [2022-01-18 04:05:06,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387869134] [2022-01-18 04:05:06,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:05:06,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 04:05:06,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:05:06,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 04:05:06,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1068, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 04:05:06,297 INFO L87 Difference]: Start difference. First operand 96779 states and 231021 transitions. Second operand has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 34 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:05:15,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:05:15,551 INFO L93 Difference]: Finished difference Result 247727 states and 589278 transitions. [2022-01-18 04:05:15,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2022-01-18 04:05:15,552 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 34 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-01-18 04:05:15,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:05:16,311 INFO L225 Difference]: With dead ends: 247727 [2022-01-18 04:05:16,311 INFO L226 Difference]: Without dead ends: 247520 [2022-01-18 04:05:16,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14609 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=3852, Invalid=37968, Unknown=0, NotChecked=0, Total=41820 [2022-01-18 04:05:16,313 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 840 mSDsluCounter, 5338 mSDsCounter, 0 mSdLazyCounter, 4552 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 5091 SdHoareTripleChecker+Invalid, 4823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 4552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 04:05:16,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [840 Valid, 5091 Invalid, 4823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 4552 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-18 04:05:16,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247520 states. [2022-01-18 04:05:20,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247520 to 197497. [2022-01-18 04:05:20,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197497 states, 197496 states have (on average 2.411436180985944) internal successors, (476249), 197496 states have internal predecessors, (476249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:05:21,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197497 states to 197497 states and 476249 transitions. [2022-01-18 04:05:21,423 INFO L78 Accepts]: Start accepts. Automaton has 197497 states and 476249 transitions. Word has length 38 [2022-01-18 04:05:21,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:05:21,423 INFO L470 AbstractCegarLoop]: Abstraction has 197497 states and 476249 transitions. [2022-01-18 04:05:21,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 34 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:05:21,424 INFO L276 IsEmpty]: Start isEmpty. Operand 197497 states and 476249 transitions. [2022-01-18 04:05:21,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:05:21,480 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:05:21,480 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:05:21,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-01-18 04:05:21,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2022-01-18 04:05:21,681 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:05:21,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:05:21,681 INFO L85 PathProgramCache]: Analyzing trace with hash 710954658, now seen corresponding path program 52 times [2022-01-18 04:05:21,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:05:21,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499452586] [2022-01-18 04:05:21,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:05:21,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:05:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:05:21,855 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:05:21,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:05:21,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499452586] [2022-01-18 04:05:21,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499452586] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:05:21,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450899713] [2022-01-18 04:05:21,856 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:05:21,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:05:21,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:05:21,858 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:05:21,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-01-18 04:05:21,879 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:05:21,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:05:21,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:05:21,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:05:22,163 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:05:22,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:05:22,482 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:05:22,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450899713] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:05:22,483 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:05:22,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 30 [2022-01-18 04:05:22,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421144582] [2022-01-18 04:05:22,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:05:22,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 04:05:22,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:05:22,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 04:05:22,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2022-01-18 04:05:22,483 INFO L87 Difference]: Start difference. First operand 197497 states and 476249 transitions. Second operand has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:05:25,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:05:25,365 INFO L93 Difference]: Finished difference Result 222369 states and 534084 transitions. [2022-01-18 04:05:25,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 04:05:25,366 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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 38 [2022-01-18 04:05:25,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:05:26,007 INFO L225 Difference]: With dead ends: 222369 [2022-01-18 04:05:26,007 INFO L226 Difference]: Without dead ends: 222352 [2022-01-18 04:05:26,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=434, Invalid=4258, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 04:05:26,007 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 380 mSDsluCounter, 2039 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 1573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:05:26,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 1912 Invalid, 1573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1491 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 04:05:26,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222352 states. [2022-01-18 04:05:29,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222352 to 199729. [2022-01-18 04:05:30,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199729 states, 199728 states have (on average 2.412170551950653) internal successors, (481778), 199728 states have internal predecessors, (481778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:05:30,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199729 states to 199729 states and 481778 transitions. [2022-01-18 04:05:30,902 INFO L78 Accepts]: Start accepts. Automaton has 199729 states and 481778 transitions. Word has length 38 [2022-01-18 04:05:30,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:05:30,902 INFO L470 AbstractCegarLoop]: Abstraction has 199729 states and 481778 transitions. [2022-01-18 04:05:30,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:05:30,902 INFO L276 IsEmpty]: Start isEmpty. Operand 199729 states and 481778 transitions. [2022-01-18 04:05:30,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:05:30,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:05:30,950 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:05:30,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-01-18 04:05:31,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2022-01-18 04:05:31,151 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:05:31,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:05:31,151 INFO L85 PathProgramCache]: Analyzing trace with hash 432482470, now seen corresponding path program 53 times [2022-01-18 04:05:31,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:05:31,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867448742] [2022-01-18 04:05:31,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:05:31,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:05:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:05:31,333 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:05:31,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:05:31,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867448742] [2022-01-18 04:05:31,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867448742] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:05:31,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115484543] [2022-01-18 04:05:31,334 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:05:31,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:05:31,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:05:31,335 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:05:31,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-01-18 04:05:31,358 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 04:05:31,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:05:31,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:05:31,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:05:31,707 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:05:31,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:05:32,284 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:05:32,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115484543] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:05:32,284 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:05:32,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 36 [2022-01-18 04:05:32,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324662761] [2022-01-18 04:05:32,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:05:32,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 04:05:32,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:05:32,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 04:05:32,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1171, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 04:05:32,285 INFO L87 Difference]: Start difference. First operand 199729 states and 481778 transitions. Second operand has 37 states, 37 states have (on average 2.3783783783783785) internal successors, (88), 36 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) [2022-01-18 04:05:37,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:05:37,031 INFO L93 Difference]: Finished difference Result 250125 states and 598297 transitions. [2022-01-18 04:05:37,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 04:05:37,031 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.3783783783783785) internal successors, (88), 36 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 38 [2022-01-18 04:05:37,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:05:38,170 INFO L225 Difference]: With dead ends: 250125 [2022-01-18 04:05:38,170 INFO L226 Difference]: Without dead ends: 249693 [2022-01-18 04:05:38,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2933 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1466, Invalid=9664, Unknown=0, NotChecked=0, Total=11130 [2022-01-18 04:05:38,171 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 719 mSDsluCounter, 3144 mSDsCounter, 0 mSdLazyCounter, 2679 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 2847 SdHoareTripleChecker+Invalid, 2897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 2679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:05:38,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 2847 Invalid, 2897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 2679 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 04:05:38,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249693 states. [2022-01-18 04:05:41,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249693 to 204883. [2022-01-18 04:05:42,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204883 states, 204882 states have (on average 2.410118995324138) internal successors, (493790), 204882 states have internal predecessors, (493790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:05:42,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204883 states to 204883 states and 493790 transitions. [2022-01-18 04:05:42,751 INFO L78 Accepts]: Start accepts. Automaton has 204883 states and 493790 transitions. Word has length 38 [2022-01-18 04:05:42,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:05:42,751 INFO L470 AbstractCegarLoop]: Abstraction has 204883 states and 493790 transitions. [2022-01-18 04:05:42,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.3783783783783785) internal successors, (88), 36 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) [2022-01-18 04:05:42,751 INFO L276 IsEmpty]: Start isEmpty. Operand 204883 states and 493790 transitions. [2022-01-18 04:05:42,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:05:42,814 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:05:42,814 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:05:42,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-01-18 04:05:43,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:05:43,015 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:05:43,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:05:43,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1005405586, now seen corresponding path program 54 times [2022-01-18 04:05:43,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:05:43,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529445778] [2022-01-18 04:05:43,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:05:43,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:05:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:05:43,203 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:05:43,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:05:43,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529445778] [2022-01-18 04:05:43,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529445778] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:05:43,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376035343] [2022-01-18 04:05:43,204 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:05:43,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:05:43,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:05:43,205 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:05:43,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-01-18 04:05:43,229 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:05:43,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:05:43,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:05:43,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:05:44,051 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:05:44,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:05:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:05:44,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376035343] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:05:44,399 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:05:44,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 30 [2022-01-18 04:05:44,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367004465] [2022-01-18 04:05:44,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:05:44,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 04:05:44,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:05:44,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 04:05:44,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2022-01-18 04:05:44,400 INFO L87 Difference]: Start difference. First operand 204883 states and 493790 transitions. Second operand has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:05:46,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:05:46,899 INFO L93 Difference]: Finished difference Result 217189 states and 522887 transitions. [2022-01-18 04:05:46,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 04:05:46,900 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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 38 [2022-01-18 04:05:46,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:05:48,023 INFO L225 Difference]: With dead ends: 217189 [2022-01-18 04:05:48,024 INFO L226 Difference]: Without dead ends: 217155 [2022-01-18 04:05:48,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1105 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=475, Invalid=4637, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 04:05:48,024 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 315 mSDsluCounter, 1709 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:05:48,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 1564 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:05:48,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217155 states. [2022-01-18 04:05:51,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217155 to 205752. [2022-01-18 04:05:52,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205752 states, 205751 states have (on average 2.4099761362034693) internal successors, (495855), 205751 states have internal predecessors, (495855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:05:52,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205752 states to 205752 states and 495855 transitions. [2022-01-18 04:05:52,575 INFO L78 Accepts]: Start accepts. Automaton has 205752 states and 495855 transitions. Word has length 38 [2022-01-18 04:05:52,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:05:52,576 INFO L470 AbstractCegarLoop]: Abstraction has 205752 states and 495855 transitions. [2022-01-18 04:05:52,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:05:52,576 INFO L276 IsEmpty]: Start isEmpty. Operand 205752 states and 495855 transitions. [2022-01-18 04:05:52,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:05:52,625 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:05:52,625 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:05:52,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-01-18 04:05:52,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:05:52,826 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:05:52,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:05:52,826 INFO L85 PathProgramCache]: Analyzing trace with hash -41761426, now seen corresponding path program 55 times [2022-01-18 04:05:52,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:05:52,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343762656] [2022-01-18 04:05:52,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:05:52,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:05:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:05:52,977 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:05:52,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:05:52,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343762656] [2022-01-18 04:05:52,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343762656] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:05:52,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970760998] [2022-01-18 04:05:52,977 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:05:52,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:05:52,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:05:52,978 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:05:52,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-01-18 04:05:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:05:52,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:05:52,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:05:53,321 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:05:53,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:05:53,633 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:05:53,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970760998] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:05:53,633 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:05:53,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 31 [2022-01-18 04:05:53,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59106734] [2022-01-18 04:05:53,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:05:53,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 04:05:53,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:05:53,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 04:05:53,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=888, Unknown=0, NotChecked=0, Total=992 [2022-01-18 04:05:53,634 INFO L87 Difference]: Start difference. First operand 205752 states and 495855 transitions. Second operand has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:05:56,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:05:56,889 INFO L93 Difference]: Finished difference Result 243037 states and 582553 transitions. [2022-01-18 04:05:56,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 04:05:56,890 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 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 38 [2022-01-18 04:05:56,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:05:58,034 INFO L225 Difference]: With dead ends: 243037 [2022-01-18 04:05:58,034 INFO L226 Difference]: Without dead ends: 242968 [2022-01-18 04:05:58,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=452, Invalid=4660, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 04:05:58,035 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 374 mSDsluCounter, 2410 mSDsCounter, 0 mSdLazyCounter, 2150 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 2133 SdHoareTripleChecker+Invalid, 2258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 04:05:58,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 2133 Invalid, 2258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2150 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 04:05:58,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242968 states. [2022-01-18 04:06:01,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242968 to 214523. [2022-01-18 04:06:02,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214523 states, 214522 states have (on average 2.411393703209927) internal successors, (517297), 214522 states have internal predecessors, (517297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:06:02,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214523 states to 214523 states and 517297 transitions. [2022-01-18 04:06:02,771 INFO L78 Accepts]: Start accepts. Automaton has 214523 states and 517297 transitions. Word has length 38 [2022-01-18 04:06:02,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:06:02,771 INFO L470 AbstractCegarLoop]: Abstraction has 214523 states and 517297 transitions. [2022-01-18 04:06:02,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:06:02,772 INFO L276 IsEmpty]: Start isEmpty. Operand 214523 states and 517297 transitions. [2022-01-18 04:06:02,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:06:02,831 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:06:02,831 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:06:02,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-01-18 04:06:03,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-01-18 04:06:03,032 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:06:03,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:06:03,033 INFO L85 PathProgramCache]: Analyzing trace with hash 253122132, now seen corresponding path program 56 times [2022-01-18 04:06:03,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:06:03,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807180598] [2022-01-18 04:06:03,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:06:03,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:06:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:06:03,217 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:06:03,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:06:03,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807180598] [2022-01-18 04:06:03,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807180598] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:06:03,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561946501] [2022-01-18 04:06:03,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:06:03,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:06:03,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:06:03,218 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:06:03,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-01-18 04:06:03,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:06:03,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:06:03,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:06:03,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:06:04,130 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:06:04,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:06:04,491 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:06:04,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561946501] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:06:04,491 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:06:04,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 30 [2022-01-18 04:06:04,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066818332] [2022-01-18 04:06:04,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:06:04,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 04:06:04,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:06:04,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 04:06:04,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2022-01-18 04:06:04,492 INFO L87 Difference]: Start difference. First operand 214523 states and 517297 transitions. Second operand has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:06:06,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:06:06,548 INFO L93 Difference]: Finished difference Result 238695 states and 573579 transitions. [2022-01-18 04:06:06,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 04:06:06,548 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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 38 [2022-01-18 04:06:06,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:06:07,823 INFO L225 Difference]: With dead ends: 238695 [2022-01-18 04:06:07,823 INFO L226 Difference]: Without dead ends: 238678 [2022-01-18 04:06:07,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=268, Invalid=2702, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 04:06:07,823 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 210 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 1391 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:06:07,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 1664 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1391 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:06:08,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238678 states. [2022-01-18 04:06:11,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238678 to 214859. [2022-01-18 04:06:11,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214859 states, 214858 states have (on average 2.4113879864840966) internal successors, (518106), 214858 states have internal predecessors, (518106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:06:12,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214859 states to 214859 states and 518106 transitions. [2022-01-18 04:06:12,512 INFO L78 Accepts]: Start accepts. Automaton has 214859 states and 518106 transitions. Word has length 38 [2022-01-18 04:06:12,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:06:12,512 INFO L470 AbstractCegarLoop]: Abstraction has 214859 states and 518106 transitions. [2022-01-18 04:06:12,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:06:12,512 INFO L276 IsEmpty]: Start isEmpty. Operand 214859 states and 518106 transitions. [2022-01-18 04:06:12,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:06:12,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:06:12,565 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:06:12,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-01-18 04:06:12,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-01-18 04:06:12,767 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:06:12,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:06:12,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1725520592, now seen corresponding path program 57 times [2022-01-18 04:06:12,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:06:12,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98065777] [2022-01-18 04:06:12,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:06:12,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:06:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:06:12,938 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:06:12,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:06:12,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98065777] [2022-01-18 04:06:12,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98065777] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:06:12,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258028444] [2022-01-18 04:06:12,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:06:12,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:06:12,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:06:12,940 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:06:12,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-01-18 04:06:12,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 04:06:12,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:06:12,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:06:12,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:06:13,834 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:06:13,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:06:14,205 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:06:14,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258028444] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:06:14,205 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:06:14,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 30 [2022-01-18 04:06:14,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004324028] [2022-01-18 04:06:14,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:06:14,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 04:06:14,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:06:14,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 04:06:14,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=827, Unknown=0, NotChecked=0, Total=930 [2022-01-18 04:06:14,206 INFO L87 Difference]: Start difference. First operand 214859 states and 518106 transitions. Second operand has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:06:17,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:06:17,054 INFO L93 Difference]: Finished difference Result 219835 states and 529343 transitions. [2022-01-18 04:06:17,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 04:06:17,054 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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 38 [2022-01-18 04:06:17,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:06:18,129 INFO L225 Difference]: With dead ends: 219835 [2022-01-18 04:06:18,129 INFO L226 Difference]: Without dead ends: 219791 [2022-01-18 04:06:18,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1249 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=535, Invalid=5015, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 04:06:18,130 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 391 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 1917 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 2059 SdHoareTripleChecker+Invalid, 2054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 04:06:18,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 2059 Invalid, 2054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1917 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 04:06:18,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219791 states. [2022-01-18 04:06:21,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219791 to 216583. [2022-01-18 04:06:22,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216583 states, 216582 states have (on average 2.4118116925690964) internal successors, (522355), 216582 states have internal predecessors, (522355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:06:22,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216583 states to 216583 states and 522355 transitions. [2022-01-18 04:06:22,802 INFO L78 Accepts]: Start accepts. Automaton has 216583 states and 522355 transitions. Word has length 38 [2022-01-18 04:06:22,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:06:22,802 INFO L470 AbstractCegarLoop]: Abstraction has 216583 states and 522355 transitions. [2022-01-18 04:06:22,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:06:22,802 INFO L276 IsEmpty]: Start isEmpty. Operand 216583 states and 522355 transitions. [2022-01-18 04:06:22,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:06:22,856 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:06:22,856 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:06:22,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-01-18 04:06:23,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:06:23,057 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:06:23,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:06:23,058 INFO L85 PathProgramCache]: Analyzing trace with hash -925910520, now seen corresponding path program 58 times [2022-01-18 04:06:23,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:06:23,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602504342] [2022-01-18 04:06:23,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:06:23,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:06:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:06:23,221 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:06:23,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:06:23,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602504342] [2022-01-18 04:06:23,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602504342] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:06:23,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458647658] [2022-01-18 04:06:23,222 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:06:23,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:06:23,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:06:23,223 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:06:23,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-01-18 04:06:23,242 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:06:23,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:06:23,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:06:23,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:06:23,556 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:06:23,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:06:24,453 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:06:24,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458647658] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:06:24,454 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:06:24,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 30 [2022-01-18 04:06:24,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405617798] [2022-01-18 04:06:24,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:06:24,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 04:06:24,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:06:24,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 04:06:24,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=828, Unknown=0, NotChecked=0, Total=930 [2022-01-18 04:06:24,455 INFO L87 Difference]: Start difference. First operand 216583 states and 522355 transitions. Second operand has 31 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 30 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) [2022-01-18 04:06:27,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:06:27,501 INFO L93 Difference]: Finished difference Result 221841 states and 533914 transitions. [2022-01-18 04:06:27,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 04:06:27,502 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 30 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 38 [2022-01-18 04:06:27,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:06:28,303 INFO L225 Difference]: With dead ends: 221841 [2022-01-18 04:06:28,303 INFO L226 Difference]: Without dead ends: 221758 [2022-01-18 04:06:28,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1152 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=485, Invalid=4485, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 04:06:28,303 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 401 mSDsluCounter, 2194 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 1952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 04:06:28,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 1989 Invalid, 1952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1854 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 04:06:28,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221758 states. [2022-01-18 04:06:32,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221758 to 219330. [2022-01-18 04:06:32,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219330 states, 219329 states have (on average 2.410378928459073) internal successors, (528666), 219329 states have internal predecessors, (528666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:06:33,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219330 states to 219330 states and 528666 transitions. [2022-01-18 04:06:33,517 INFO L78 Accepts]: Start accepts. Automaton has 219330 states and 528666 transitions. Word has length 38 [2022-01-18 04:06:33,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:06:33,518 INFO L470 AbstractCegarLoop]: Abstraction has 219330 states and 528666 transitions. [2022-01-18 04:06:33,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 30 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) [2022-01-18 04:06:33,518 INFO L276 IsEmpty]: Start isEmpty. Operand 219330 states and 528666 transitions. [2022-01-18 04:06:33,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:06:33,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:06:33,566 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:06:33,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-01-18 04:06:33,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-01-18 04:06:33,766 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:06:33,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:06:33,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1421707574, now seen corresponding path program 59 times [2022-01-18 04:06:33,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:06:33,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793193973] [2022-01-18 04:06:33,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:06:33,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:06:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:06:33,939 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:06:33,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:06:33,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793193973] [2022-01-18 04:06:33,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793193973] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:06:33,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165740413] [2022-01-18 04:06:33,939 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:06:33,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:06:33,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:06:33,956 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:06:33,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-01-18 04:06:33,975 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 04:06:33,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:06:33,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:06:33,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:06:34,306 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:06:34,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:06:34,597 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:06:34,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165740413] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:06:34,598 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:06:34,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 31 [2022-01-18 04:06:34,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741376890] [2022-01-18 04:06:34,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:06:34,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 04:06:34,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:06:34,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 04:06:34,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2022-01-18 04:06:34,599 INFO L87 Difference]: Start difference. First operand 219330 states and 528666 transitions. Second operand has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 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) [2022-01-18 04:06:37,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:06:37,529 INFO L93 Difference]: Finished difference Result 226504 states and 544989 transitions. [2022-01-18 04:06:37,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 04:06:37,529 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 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 38 [2022-01-18 04:06:37,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:06:38,154 INFO L225 Difference]: With dead ends: 226504 [2022-01-18 04:06:38,154 INFO L226 Difference]: Without dead ends: 226451 [2022-01-18 04:06:38,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1065 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=491, Invalid=4201, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 04:06:38,155 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 395 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 1911 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 2007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 04:06:38,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 1723 Invalid, 2007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1911 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 04:06:38,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226451 states. [2022-01-18 04:06:42,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226451 to 223614. [2022-01-18 04:06:42,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223614 states, 223613 states have (on average 2.409850947842925) internal successors, (538874), 223613 states have internal predecessors, (538874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:06:43,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223614 states to 223614 states and 538874 transitions. [2022-01-18 04:06:43,487 INFO L78 Accepts]: Start accepts. Automaton has 223614 states and 538874 transitions. Word has length 38 [2022-01-18 04:06:43,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:06:43,487 INFO L470 AbstractCegarLoop]: Abstraction has 223614 states and 538874 transitions. [2022-01-18 04:06:43,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 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) [2022-01-18 04:06:43,487 INFO L276 IsEmpty]: Start isEmpty. Operand 223614 states and 538874 transitions. [2022-01-18 04:06:43,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:06:43,539 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:06:43,539 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:06:43,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-01-18 04:06:43,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-01-18 04:06:43,739 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:06:43,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:06:43,740 INFO L85 PathProgramCache]: Analyzing trace with hash -198181364, now seen corresponding path program 60 times [2022-01-18 04:06:43,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:06:43,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656248875] [2022-01-18 04:06:43,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:06:43,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:06:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:06:43,895 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:06:43,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:06:43,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656248875] [2022-01-18 04:06:43,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656248875] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:06:43,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471048895] [2022-01-18 04:06:43,896 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:06:43,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:06:43,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:06:43,897 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:06:43,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-01-18 04:06:43,921 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 04:06:43,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:06:43,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:06:43,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:06:44,224 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:06:44,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:06:44,484 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:06:44,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471048895] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:06:44,485 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:06:44,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 28 [2022-01-18 04:06:44,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525082661] [2022-01-18 04:06:44,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:06:44,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-18 04:06:44,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:06:44,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-18 04:06:44,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2022-01-18 04:06:44,486 INFO L87 Difference]: Start difference. First operand 223614 states and 538874 transitions. Second operand has 29 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:06:47,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:06:47,471 INFO L93 Difference]: Finished difference Result 240724 states and 577550 transitions. [2022-01-18 04:06:47,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 04:06:47,472 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 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 38 [2022-01-18 04:06:47,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:06:48,188 INFO L225 Difference]: With dead ends: 240724 [2022-01-18 04:06:48,188 INFO L226 Difference]: Without dead ends: 240666 [2022-01-18 04:06:48,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=321, Invalid=2871, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 04:06:48,188 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 322 mSDsluCounter, 2611 mSDsCounter, 0 mSdLazyCounter, 2090 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 2362 SdHoareTripleChecker+Invalid, 2149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 04:06:48,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 2362 Invalid, 2149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2090 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 04:06:48,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240666 states. [2022-01-18 04:06:52,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240666 to 225813. [2022-01-18 04:06:52,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225813 states, 225812 states have (on average 2.4096505057304305) internal successors, (544128), 225812 states have internal predecessors, (544128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:06:53,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225813 states to 225813 states and 544128 transitions. [2022-01-18 04:06:53,587 INFO L78 Accepts]: Start accepts. Automaton has 225813 states and 544128 transitions. Word has length 38 [2022-01-18 04:06:53,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:06:53,587 INFO L470 AbstractCegarLoop]: Abstraction has 225813 states and 544128 transitions. [2022-01-18 04:06:53,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:06:53,588 INFO L276 IsEmpty]: Start isEmpty. Operand 225813 states and 544128 transitions. [2022-01-18 04:06:53,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:06:53,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:06:53,642 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:06:53,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-01-18 04:06:53,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-01-18 04:06:53,843 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:06:53,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:06:53,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1452833468, now seen corresponding path program 61 times [2022-01-18 04:06:53,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:06:53,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184126719] [2022-01-18 04:06:53,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:06:53,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:06:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:06:54,008 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:06:54,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:06:54,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184126719] [2022-01-18 04:06:54,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184126719] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:06:54,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028584848] [2022-01-18 04:06:54,009 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:06:54,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:06:54,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:06:54,010 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:06:54,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-01-18 04:06:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:06:54,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:06:54,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:06:54,424 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:06:54,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:06:54,695 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:06:54,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028584848] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:06:54,696 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:06:54,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2022-01-18 04:06:54,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251699245] [2022-01-18 04:06:54,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:06:54,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 04:06:54,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:06:54,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 04:06:54,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2022-01-18 04:06:54,696 INFO L87 Difference]: Start difference. First operand 225813 states and 544128 transitions. Second operand has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:06:57,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:06:57,622 INFO L93 Difference]: Finished difference Result 253210 states and 606499 transitions. [2022-01-18 04:06:57,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 04:06:57,622 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 0 states have call successors, (0), 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 38 [2022-01-18 04:06:57,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:06:58,361 INFO L225 Difference]: With dead ends: 253210 [2022-01-18 04:06:58,361 INFO L226 Difference]: Without dead ends: 253105 [2022-01-18 04:06:58,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=402, Invalid=3630, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 04:06:58,361 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 386 mSDsluCounter, 2418 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 2142 SdHoareTripleChecker+Invalid, 2170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 04:06:58,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 2142 Invalid, 2170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2088 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 04:06:58,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253105 states. [2022-01-18 04:07:02,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253105 to 232783. [2022-01-18 04:07:03,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232783 states, 232782 states have (on average 2.4071491782010637) internal successors, (560341), 232782 states have internal predecessors, (560341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:07:03,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232783 states to 232783 states and 560341 transitions. [2022-01-18 04:07:03,757 INFO L78 Accepts]: Start accepts. Automaton has 232783 states and 560341 transitions. Word has length 38 [2022-01-18 04:07:03,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:07:03,757 INFO L470 AbstractCegarLoop]: Abstraction has 232783 states and 560341 transitions. [2022-01-18 04:07:03,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:07:03,757 INFO L276 IsEmpty]: Start isEmpty. Operand 232783 states and 560341 transitions. [2022-01-18 04:07:03,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:07:03,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:07:03,817 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:07:03,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-01-18 04:07:04,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2022-01-18 04:07:04,018 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:07:04,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:07:04,018 INFO L85 PathProgramCache]: Analyzing trace with hash 679972510, now seen corresponding path program 62 times [2022-01-18 04:07:04,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:07:04,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010265453] [2022-01-18 04:07:04,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:07:04,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:07:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:07:04,182 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:07:04,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:07:04,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010265453] [2022-01-18 04:07:04,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010265453] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:07:04,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425707431] [2022-01-18 04:07:04,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:07:04,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:07:04,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:07:04,183 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:07:04,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-01-18 04:07:04,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:07:04,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:07:04,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:07:04,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:07:04,519 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:07:04,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:07:04,800 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:07:04,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425707431] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:07:04,800 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:07:04,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2022-01-18 04:07:04,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687993010] [2022-01-18 04:07:04,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:07:04,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 04:07:04,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:07:04,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 04:07:04,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2022-01-18 04:07:04,801 INFO L87 Difference]: Start difference. First operand 232783 states and 560341 transitions. Second operand has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:07:07,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:07:07,928 INFO L93 Difference]: Finished difference Result 257718 states and 616884 transitions. [2022-01-18 04:07:07,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 04:07:07,929 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 0 states have call successors, (0), 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 38 [2022-01-18 04:07:07,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:07:08,681 INFO L225 Difference]: With dead ends: 257718 [2022-01-18 04:07:08,681 INFO L226 Difference]: Without dead ends: 257623 [2022-01-18 04:07:08,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=369, Invalid=3537, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 04:07:08,681 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 362 mSDsluCounter, 3066 mSDsCounter, 0 mSdLazyCounter, 2364 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 2801 SdHoareTripleChecker+Invalid, 2443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 04:07:08,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 2801 Invalid, 2443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2364 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 04:07:09,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257623 states. [2022-01-18 04:07:13,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257623 to 238428. [2022-01-18 04:07:13,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238428 states, 238427 states have (on average 2.406254325223234) internal successors, (573716), 238427 states have internal predecessors, (573716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:07:14,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238428 states to 238428 states and 573716 transitions. [2022-01-18 04:07:14,244 INFO L78 Accepts]: Start accepts. Automaton has 238428 states and 573716 transitions. Word has length 38 [2022-01-18 04:07:14,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:07:14,244 INFO L470 AbstractCegarLoop]: Abstraction has 238428 states and 573716 transitions. [2022-01-18 04:07:14,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:07:14,244 INFO L276 IsEmpty]: Start isEmpty. Operand 238428 states and 573716 transitions. [2022-01-18 04:07:14,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:07:14,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:07:14,999 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:07:15,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-01-18 04:07:15,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:07:15,215 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:07:15,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:07:15,215 INFO L85 PathProgramCache]: Analyzing trace with hash 442535240, now seen corresponding path program 63 times [2022-01-18 04:07:15,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:07:15,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138883560] [2022-01-18 04:07:15,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:07:15,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:07:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:07:15,386 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:07:15,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:07:15,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138883560] [2022-01-18 04:07:15,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138883560] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:07:15,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281338217] [2022-01-18 04:07:15,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:07:15,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:07:15,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:07:15,388 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:07:15,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-01-18 04:07:15,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 04:07:15,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:07:15,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:07:15,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:07:15,719 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:07:15,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:07:16,063 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:07:16,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281338217] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:07:16,063 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:07:16,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 32 [2022-01-18 04:07:16,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880102698] [2022-01-18 04:07:16,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:07:16,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 04:07:16,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:07:16,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 04:07:16,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=952, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 04:07:16,064 INFO L87 Difference]: Start difference. First operand 238428 states and 573716 transitions. Second operand has 33 states, 33 states have (on average 2.5454545454545454) internal successors, (84), 32 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:07:19,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:07:19,762 INFO L93 Difference]: Finished difference Result 247178 states and 593496 transitions. [2022-01-18 04:07:19,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-18 04:07:19,763 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.5454545454545454) internal successors, (84), 32 states have internal predecessors, (84), 0 states have call successors, (0), 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 38 [2022-01-18 04:07:19,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:07:20,421 INFO L225 Difference]: With dead ends: 247178 [2022-01-18 04:07:20,421 INFO L226 Difference]: Without dead ends: 247092 [2022-01-18 04:07:20,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1519 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=649, Invalid=6157, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 04:07:20,422 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 600 mSDsluCounter, 2932 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 2564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 04:07:20,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 2475 Invalid, 2564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 04:07:20,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247092 states. [2022-01-18 04:07:24,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247092 to 242549. [2022-01-18 04:07:24,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242549 states, 242548 states have (on average 2.4067318633837425) internal successors, (583748), 242548 states have internal predecessors, (583748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:07:25,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242549 states to 242549 states and 583748 transitions. [2022-01-18 04:07:25,986 INFO L78 Accepts]: Start accepts. Automaton has 242549 states and 583748 transitions. Word has length 38 [2022-01-18 04:07:25,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:07:25,986 INFO L470 AbstractCegarLoop]: Abstraction has 242549 states and 583748 transitions. [2022-01-18 04:07:25,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.5454545454545454) internal successors, (84), 32 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:07:25,987 INFO L276 IsEmpty]: Start isEmpty. Operand 242549 states and 583748 transitions. [2022-01-18 04:07:26,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:07:26,041 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:07:26,041 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:07:26,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-01-18 04:07:26,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:07:26,241 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:07:26,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:07:26,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1936505558, now seen corresponding path program 64 times [2022-01-18 04:07:26,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:07:26,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061146953] [2022-01-18 04:07:26,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:07:26,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:07:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:07:26,406 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:07:26,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:07:26,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061146953] [2022-01-18 04:07:26,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061146953] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:07:26,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656383172] [2022-01-18 04:07:26,407 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:07:26,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:07:26,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:07:26,408 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:07:26,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-01-18 04:07:26,425 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:07:26,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:07:26,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:07:26,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:07:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:07:26,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:07:26,994 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:07:26,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656383172] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:07:26,994 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:07:26,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2022-01-18 04:07:26,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412542694] [2022-01-18 04:07:26,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:07:26,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 04:07:26,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:07:26,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 04:07:26,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2022-01-18 04:07:26,995 INFO L87 Difference]: Start difference. First operand 242549 states and 583748 transitions. Second operand has 30 states, 30 states have (on average 2.3) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:07:29,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:07:29,597 INFO L93 Difference]: Finished difference Result 259471 states and 621961 transitions. [2022-01-18 04:07:29,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 04:07:29,597 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 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 38 [2022-01-18 04:07:29,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:07:30,328 INFO L225 Difference]: With dead ends: 259471 [2022-01-18 04:07:30,329 INFO L226 Difference]: Without dead ends: 259425 [2022-01-18 04:07:30,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=297, Invalid=2565, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 04:07:30,329 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 272 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 1580 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:07:30,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 1824 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1580 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:07:30,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259425 states. [2022-01-18 04:07:34,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259425 to 244014. [2022-01-18 04:07:35,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244014 states, 244013 states have (on average 2.4064332638015187) internal successors, (587201), 244013 states have internal predecessors, (587201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:07:35,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244014 states to 244014 states and 587201 transitions. [2022-01-18 04:07:35,944 INFO L78 Accepts]: Start accepts. Automaton has 244014 states and 587201 transitions. Word has length 38 [2022-01-18 04:07:35,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:07:35,944 INFO L470 AbstractCegarLoop]: Abstraction has 244014 states and 587201 transitions. [2022-01-18 04:07:35,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:07:35,944 INFO L276 IsEmpty]: Start isEmpty. Operand 244014 states and 587201 transitions. [2022-01-18 04:07:36,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:07:36,010 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:07:36,010 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:07:36,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-01-18 04:07:36,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:07:36,211 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:07:36,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:07:36,211 INFO L85 PathProgramCache]: Analyzing trace with hash 423917610, now seen corresponding path program 65 times [2022-01-18 04:07:36,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:07:36,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119776680] [2022-01-18 04:07:36,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:07:36,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:07:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:07:36,382 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:07:36,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:07:36,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119776680] [2022-01-18 04:07:36,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119776680] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:07:36,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845877162] [2022-01-18 04:07:36,382 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:07:36,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:07:36,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:07:36,383 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:07:36,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-01-18 04:07:36,403 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 04:07:36,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:07:36,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:07:36,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:07:36,779 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:07:36,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:07:37,103 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:07:37,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845877162] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:07:37,103 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:07:37,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 31 [2022-01-18 04:07:37,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827890769] [2022-01-18 04:07:37,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:07:37,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 04:07:37,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:07:37,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 04:07:37,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=886, Unknown=0, NotChecked=0, Total=992 [2022-01-18 04:07:37,104 INFO L87 Difference]: Start difference. First operand 244014 states and 587201 transitions. Second operand has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:07:40,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:07:40,170 INFO L93 Difference]: Finished difference Result 266371 states and 638012 transitions. [2022-01-18 04:07:40,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 04:07:40,171 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 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 38 [2022-01-18 04:07:40,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:07:41,413 INFO L225 Difference]: With dead ends: 266371 [2022-01-18 04:07:41,413 INFO L226 Difference]: Without dead ends: 266301 [2022-01-18 04:07:41,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 822 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=385, Invalid=3397, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 04:07:41,413 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 353 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 1691 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 1767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:07:41,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 1639 Invalid, 1767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1691 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 04:07:41,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266301 states. [2022-01-18 04:07:45,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266301 to 247320. [2022-01-18 04:07:45,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247320 states, 247319 states have (on average 2.4065437754479033) internal successors, (595184), 247319 states have internal predecessors, (595184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:07:47,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247320 states to 247320 states and 595184 transitions. [2022-01-18 04:07:47,855 INFO L78 Accepts]: Start accepts. Automaton has 247320 states and 595184 transitions. Word has length 38 [2022-01-18 04:07:47,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:07:47,855 INFO L470 AbstractCegarLoop]: Abstraction has 247320 states and 595184 transitions. [2022-01-18 04:07:47,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:07:47,855 INFO L276 IsEmpty]: Start isEmpty. Operand 247320 states and 595184 transitions. [2022-01-18 04:07:47,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:07:47,923 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:07:47,924 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:07:47,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-01-18 04:07:48,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2022-01-18 04:07:48,138 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:07:48,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:07:48,139 INFO L85 PathProgramCache]: Analyzing trace with hash -2054048424, now seen corresponding path program 66 times [2022-01-18 04:07:48,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:07:48,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094927673] [2022-01-18 04:07:48,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:07:48,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:07:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:07:48,330 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:07:48,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:07:48,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094927673] [2022-01-18 04:07:48,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094927673] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:07:48,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407079306] [2022-01-18 04:07:48,331 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:07:48,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:07:48,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:07:48,335 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:07:48,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-01-18 04:07:48,356 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:07:48,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:07:48,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:07:48,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:07:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:07:48,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:07:49,076 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:07:49,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407079306] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:07:49,077 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:07:49,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 30 [2022-01-18 04:07:49,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628723954] [2022-01-18 04:07:49,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:07:49,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 04:07:49,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:07:49,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 04:07:49,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2022-01-18 04:07:49,078 INFO L87 Difference]: Start difference. First operand 247320 states and 595184 transitions. Second operand has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:07:51,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:07:51,636 INFO L93 Difference]: Finished difference Result 263347 states and 631500 transitions. [2022-01-18 04:07:51,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 04:07:51,636 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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 38 [2022-01-18 04:07:51,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:07:52,420 INFO L225 Difference]: With dead ends: 263347 [2022-01-18 04:07:52,420 INFO L226 Difference]: Without dead ends: 263330 [2022-01-18 04:07:52,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=280, Invalid=2582, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 04:07:52,421 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 225 mSDsluCounter, 1822 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:07:52,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 1646 Invalid, 1455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:07:52,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263330 states. [2022-01-18 04:07:57,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263330 to 248311. [2022-01-18 04:07:57,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248311 states, 248310 states have (on average 2.4066328379847772) internal successors, (597591), 248310 states have internal predecessors, (597591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:07:58,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248311 states to 248311 states and 597591 transitions. [2022-01-18 04:07:58,063 INFO L78 Accepts]: Start accepts. Automaton has 248311 states and 597591 transitions. Word has length 38 [2022-01-18 04:07:58,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:07:58,064 INFO L470 AbstractCegarLoop]: Abstraction has 248311 states and 597591 transitions. [2022-01-18 04:07:58,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:07:58,064 INFO L276 IsEmpty]: Start isEmpty. Operand 248311 states and 597591 transitions. [2022-01-18 04:07:58,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:07:58,129 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:07:58,130 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:07:58,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-01-18 04:07:58,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:07:58,330 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:07:58,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:07:58,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1838109140, now seen corresponding path program 67 times [2022-01-18 04:07:58,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:07:58,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781934952] [2022-01-18 04:07:58,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:07:58,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:07:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:07:58,483 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:07:58,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:07:58,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781934952] [2022-01-18 04:07:58,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781934952] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:07:58,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250246717] [2022-01-18 04:07:58,484 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:07:58,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:07:58,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:07:58,485 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:07:58,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-01-18 04:07:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:07:58,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:07:58,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:07:58,784 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:07:58,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:07:59,105 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:07:59,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250246717] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:07:59,105 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:07:59,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 30 [2022-01-18 04:07:59,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072661477] [2022-01-18 04:07:59,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:07:59,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 04:07:59,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:07:59,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 04:07:59,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2022-01-18 04:07:59,106 INFO L87 Difference]: Start difference. First operand 248311 states and 597591 transitions. Second operand has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:08:02,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:08:02,804 INFO L93 Difference]: Finished difference Result 263955 states and 634548 transitions. [2022-01-18 04:08:02,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-18 04:08:02,805 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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 38 [2022-01-18 04:08:02,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:08:04,001 INFO L225 Difference]: With dead ends: 263955 [2022-01-18 04:08:04,002 INFO L226 Difference]: Without dead ends: 263904 [2022-01-18 04:08:04,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1529 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=595, Invalid=5885, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 04:08:04,002 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 374 mSDsluCounter, 2600 mSDsCounter, 0 mSdLazyCounter, 2061 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 2167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 04:08:04,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 2341 Invalid, 2167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2061 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 04:08:04,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263904 states. [2022-01-18 04:08:08,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263904 to 249476. [2022-01-18 04:08:08,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249476 states, 249475 states have (on average 2.406609880749574) internal successors, (600389), 249475 states have internal predecessors, (600389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:08:09,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249476 states to 249476 states and 600389 transitions. [2022-01-18 04:08:09,763 INFO L78 Accepts]: Start accepts. Automaton has 249476 states and 600389 transitions. Word has length 38 [2022-01-18 04:08:09,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:08:09,763 INFO L470 AbstractCegarLoop]: Abstraction has 249476 states and 600389 transitions. [2022-01-18 04:08:09,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:08:09,764 INFO L276 IsEmpty]: Start isEmpty. Operand 249476 states and 600389 transitions. [2022-01-18 04:08:09,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:08:09,825 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:08:09,825 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:08:09,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-01-18 04:08:10,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:08:10,026 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:08:10,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:08:10,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1493213996, now seen corresponding path program 68 times [2022-01-18 04:08:10,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:08:10,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575797157] [2022-01-18 04:08:10,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:08:10,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:08:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:08:10,176 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:08:10,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:08:10,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575797157] [2022-01-18 04:08:10,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575797157] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:08:10,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260469436] [2022-01-18 04:08:10,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:08:10,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:08:10,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:08:10,178 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:08:10,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-01-18 04:08:10,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:08:10,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:08:10,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:08:10,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:08:10,515 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:08:10,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:08:10,812 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:08:10,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260469436] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:08:10,812 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:08:10,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 31 [2022-01-18 04:08:10,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49587650] [2022-01-18 04:08:10,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:08:10,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 04:08:10,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:08:10,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 04:08:10,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2022-01-18 04:08:10,813 INFO L87 Difference]: Start difference. First operand 249476 states and 600389 transitions. Second operand has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:08:14,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:08:14,441 INFO L93 Difference]: Finished difference Result 293252 states and 702115 transitions. [2022-01-18 04:08:14,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-18 04:08:14,442 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 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 38 [2022-01-18 04:08:14,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:08:15,382 INFO L225 Difference]: With dead ends: 293252 [2022-01-18 04:08:15,382 INFO L226 Difference]: Without dead ends: 293183 [2022-01-18 04:08:15,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1474 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=510, Invalid=5342, Unknown=0, NotChecked=0, Total=5852 [2022-01-18 04:08:15,382 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 397 mSDsluCounter, 2457 mSDsCounter, 0 mSdLazyCounter, 1795 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 2283 SdHoareTripleChecker+Invalid, 1919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 04:08:15,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 2283 Invalid, 1919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1795 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 04:08:16,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293183 states. [2022-01-18 04:08:20,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293183 to 259027. [2022-01-18 04:08:21,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259027 states, 259026 states have (on average 2.407912719186491) internal successors, (623712), 259026 states have internal predecessors, (623712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:08:22,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259027 states to 259027 states and 623712 transitions. [2022-01-18 04:08:22,102 INFO L78 Accepts]: Start accepts. Automaton has 259027 states and 623712 transitions. Word has length 38 [2022-01-18 04:08:22,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:08:22,103 INFO L470 AbstractCegarLoop]: Abstraction has 259027 states and 623712 transitions. [2022-01-18 04:08:22,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:08:22,103 INFO L276 IsEmpty]: Start isEmpty. Operand 259027 states and 623712 transitions. [2022-01-18 04:08:22,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 04:08:22,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:08:22,165 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:08:22,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-01-18 04:08:22,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-01-18 04:08:22,366 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:08:22,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:08:22,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1198330438, now seen corresponding path program 69 times [2022-01-18 04:08:22,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:08:22,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631317989] [2022-01-18 04:08:22,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:08:22,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:08:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:08:22,526 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:08:22,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:08:22,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631317989] [2022-01-18 04:08:22,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631317989] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:08:22,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362500336] [2022-01-18 04:08:22,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:08:22,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:08:22,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:08:22,527 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:08:22,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-01-18 04:08:22,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 04:08:22,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:08:22,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 04:08:22,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:08:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:08:22,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:08:23,171 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:08:23,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362500336] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:08:23,172 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:08:23,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 30 [2022-01-18 04:08:23,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421861546] [2022-01-18 04:08:23,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:08:23,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 04:08:23,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:08:23,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 04:08:23,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2022-01-18 04:08:23,173 INFO L87 Difference]: Start difference. First operand 259027 states and 623712 transitions. Second operand has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:08:26,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:08:26,146 INFO L93 Difference]: Finished difference Result 289168 states and 693821 transitions. [2022-01-18 04:08:26,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 04:08:26,146 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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 38 [2022-01-18 04:08:26,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:08:27,077 INFO L225 Difference]: With dead ends: 289168 [2022-01-18 04:08:27,078 INFO L226 Difference]: Without dead ends: 289151 [2022-01-18 04:08:27,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=350, Invalid=3682, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 04:08:27,078 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 287 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:08:27,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 1699 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:08:27,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289151 states. [2022-01-18 04:08:32,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289151 to 260145. [2022-01-18 04:08:32,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260145 states, 260144 states have (on average 2.407966357094532) internal successors, (626418), 260144 states have internal predecessors, (626418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:08:33,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260145 states to 260145 states and 626418 transitions. [2022-01-18 04:08:33,911 INFO L78 Accepts]: Start accepts. Automaton has 260145 states and 626418 transitions. Word has length 38 [2022-01-18 04:08:33,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:08:33,912 INFO L470 AbstractCegarLoop]: Abstraction has 260145 states and 626418 transitions. [2022-01-18 04:08:33,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 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) [2022-01-18 04:08:33,912 INFO L276 IsEmpty]: Start isEmpty. Operand 260145 states and 626418 transitions. [2022-01-18 04:08:33,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 04:08:33,972 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:08:33,972 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:08:33,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-01-18 04:08:34,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-01-18 04:08:34,179 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:08:34,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:08:34,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1192238897, now seen corresponding path program 7 times [2022-01-18 04:08:34,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:08:34,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430766826] [2022-01-18 04:08:34,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:08:34,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:08:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:08:34,207 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:08:34,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:08:34,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430766826] [2022-01-18 04:08:34,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430766826] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:08:34,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460867974] [2022-01-18 04:08:34,207 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:08:34,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:08:34,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:08:34,208 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:08:34,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-01-18 04:08:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:08:34,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:08:34,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:08:34,295 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:08:34,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:08:34,350 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:08:34,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460867974] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:08:34,350 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:08:34,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 11 [2022-01-18 04:08:34,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46644941] [2022-01-18 04:08:34,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:08:34,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 04:08:34,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:08:34,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 04:08:34,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:08:34,351 INFO L87 Difference]: Start difference. First operand 260145 states and 626418 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 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) [2022-01-18 04:08:36,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:08:36,492 INFO L93 Difference]: Finished difference Result 321184 states and 775584 transitions. [2022-01-18 04:08:36,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 04:08:36,492 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 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 [2022-01-18 04:08:36,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:08:37,483 INFO L225 Difference]: With dead ends: 321184 [2022-01-18 04:08:37,483 INFO L226 Difference]: Without dead ends: 320377 [2022-01-18 04:08:37,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-01-18 04:08:37,483 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 131 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:08:37,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 335 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:08:37,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320377 states. [2022-01-18 04:08:43,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320377 to 285108. [2022-01-18 04:08:43,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285108 states, 285107 states have (on average 2.4088429957875466) internal successors, (686778), 285107 states have internal predecessors, (686778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:08:44,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285108 states to 285108 states and 686778 transitions. [2022-01-18 04:08:44,498 INFO L78 Accepts]: Start accepts. Automaton has 285108 states and 686778 transitions. Word has length 39 [2022-01-18 04:08:44,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:08:44,498 INFO L470 AbstractCegarLoop]: Abstraction has 285108 states and 686778 transitions. [2022-01-18 04:08:44,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 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) [2022-01-18 04:08:44,498 INFO L276 IsEmpty]: Start isEmpty. Operand 285108 states and 686778 transitions. [2022-01-18 04:08:44,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 04:08:44,570 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:08:44,570 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:08:44,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-01-18 04:08:44,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:08:44,770 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:08:44,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:08:44,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1351846617, now seen corresponding path program 8 times [2022-01-18 04:08:44,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:08:44,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628100387] [2022-01-18 04:08:44,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:08:44,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:08:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:08:44,814 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 17 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:08:44,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:08:44,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628100387] [2022-01-18 04:08:44,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628100387] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:08:44,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604590676] [2022-01-18 04:08:44,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:08:44,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:08:44,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:08:44,815 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:08:44,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-01-18 04:08:44,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:08:44,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:08:44,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:08:44,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:08:44,882 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 31 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:08:44,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:08:44,931 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 31 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:08:44,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604590676] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:08:44,931 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:08:44,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 8 [2022-01-18 04:08:44,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468969565] [2022-01-18 04:08:44,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:08:44,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 04:08:44,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:08:44,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 04:08:44,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-18 04:08:44,932 INFO L87 Difference]: Start difference. First operand 285108 states and 686778 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:08:46,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:08:46,781 INFO L93 Difference]: Finished difference Result 287926 states and 691391 transitions. [2022-01-18 04:08:46,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 04:08:46,782 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-01-18 04:08:46,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:08:47,729 INFO L225 Difference]: With dead ends: 287926 [2022-01-18 04:08:47,729 INFO L226 Difference]: Without dead ends: 287920 [2022-01-18 04:08:47,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:08:47,729 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 73 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:08:47,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 212 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:08:48,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287920 states. [2022-01-18 04:08:53,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287920 to 285072. [2022-01-18 04:08:53,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285072 states, 285071 states have (on average 2.408557868039892) internal successors, (686610), 285071 states have internal predecessors, (686610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:08:54,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285072 states to 285072 states and 686610 transitions. [2022-01-18 04:08:54,683 INFO L78 Accepts]: Start accepts. Automaton has 285072 states and 686610 transitions. Word has length 39 [2022-01-18 04:08:54,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:08:54,683 INFO L470 AbstractCegarLoop]: Abstraction has 285072 states and 686610 transitions. [2022-01-18 04:08:54,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:08:54,683 INFO L276 IsEmpty]: Start isEmpty. Operand 285072 states and 686610 transitions. [2022-01-18 04:08:54,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 04:08:54,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:08:54,742 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:08:54,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-01-18 04:08:54,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:08:54,943 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:08:54,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:08:54,943 INFO L85 PathProgramCache]: Analyzing trace with hash -735468407, now seen corresponding path program 9 times [2022-01-18 04:08:54,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:08:54,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971046069] [2022-01-18 04:08:54,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:08:54,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:08:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:08:54,975 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 16 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:08:54,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:08:54,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971046069] [2022-01-18 04:08:54,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971046069] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:08:54,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927029901] [2022-01-18 04:08:54,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:08:54,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:08:54,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:08:54,976 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:08:54,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-01-18 04:08:54,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 04:08:54,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:08:54,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:08:54,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:08:55,048 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 22 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:08:55,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:08:55,108 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 22 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:08:55,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927029901] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:08:55,108 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:08:55,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 10 [2022-01-18 04:08:55,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707794948] [2022-01-18 04:08:55,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:08:55,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:08:55,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:08:55,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:08:55,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:08:55,109 INFO L87 Difference]: Start difference. First operand 285072 states and 686610 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:08:57,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:08:57,883 INFO L93 Difference]: Finished difference Result 349072 states and 840084 transitions. [2022-01-18 04:08:57,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 04:08:57,883 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-01-18 04:08:57,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:08:58,920 INFO L225 Difference]: With dead ends: 349072 [2022-01-18 04:08:58,920 INFO L226 Difference]: Without dead ends: 348327 [2022-01-18 04:08:58,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2022-01-18 04:08:58,921 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 191 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:08:58,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 249 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:08:59,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348327 states. [2022-01-18 04:09:05,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348327 to 286675. [2022-01-18 04:09:05,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286675 states, 286674 states have (on average 2.4018013492678096) internal successors, (688534), 286674 states have internal predecessors, (688534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:09:07,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286675 states to 286675 states and 688534 transitions. [2022-01-18 04:09:07,098 INFO L78 Accepts]: Start accepts. Automaton has 286675 states and 688534 transitions. Word has length 39 [2022-01-18 04:09:07,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:09:07,098 INFO L470 AbstractCegarLoop]: Abstraction has 286675 states and 688534 transitions. [2022-01-18 04:09:07,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:09:07,098 INFO L276 IsEmpty]: Start isEmpty. Operand 286675 states and 688534 transitions. [2022-01-18 04:09:07,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 04:09:07,155 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:09:07,155 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:09:07,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-01-18 04:09:07,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2022-01-18 04:09:07,355 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:09:07,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:09:07,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1946601264, now seen corresponding path program 70 times [2022-01-18 04:09:07,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:09:07,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857126357] [2022-01-18 04:09:07,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:09:07,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:09:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:09:07,381 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:09:07,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:09:07,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857126357] [2022-01-18 04:09:07,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857126357] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:09:07,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044534408] [2022-01-18 04:09:07,381 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:09:07,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:09:07,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:09:07,382 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:09:07,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-01-18 04:09:07,406 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:09:07,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:09:07,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:09:07,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:09:07,454 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:09:07,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:09:07,504 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:09:07,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044534408] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:09:07,504 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:09:07,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-01-18 04:09:07,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483032665] [2022-01-18 04:09:07,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:09:07,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 04:09:07,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:09:07,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 04:09:07,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-18 04:09:07,505 INFO L87 Difference]: Start difference. First operand 286675 states and 688534 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:09:09,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:09:09,637 INFO L93 Difference]: Finished difference Result 339005 states and 814007 transitions. [2022-01-18 04:09:09,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 04:09:09,637 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-01-18 04:09:09,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:09:10,716 INFO L225 Difference]: With dead ends: 339005 [2022-01-18 04:09:10,717 INFO L226 Difference]: Without dead ends: 338883 [2022-01-18 04:09:10,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:09:10,717 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 187 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:09:10,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 118 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:09:11,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338883 states. [2022-01-18 04:09:16,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338883 to 337181. [2022-01-18 04:09:17,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337181 states, 337180 states have (on average 2.3982917136247703) internal successors, (808656), 337180 states have internal predecessors, (808656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:09:19,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337181 states to 337181 states and 808656 transitions. [2022-01-18 04:09:19,146 INFO L78 Accepts]: Start accepts. Automaton has 337181 states and 808656 transitions. Word has length 39 [2022-01-18 04:09:19,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:09:19,146 INFO L470 AbstractCegarLoop]: Abstraction has 337181 states and 808656 transitions. [2022-01-18 04:09:19,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:09:19,146 INFO L276 IsEmpty]: Start isEmpty. Operand 337181 states and 808656 transitions. [2022-01-18 04:09:19,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 04:09:19,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:09:19,208 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:09:19,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-01-18 04:09:19,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:09:19,408 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:09:19,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:09:19,409 INFO L85 PathProgramCache]: Analyzing trace with hash -185359280, now seen corresponding path program 71 times [2022-01-18 04:09:19,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:09:19,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944551575] [2022-01-18 04:09:19,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:09:19,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:09:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:09:19,430 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:09:19,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:09:19,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944551575] [2022-01-18 04:09:19,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944551575] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:09:19,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475388733] [2022-01-18 04:09:19,430 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:09:19,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:09:19,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:09:19,431 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:09:19,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-01-18 04:09:19,450 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 04:09:19,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:09:19,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:09:19,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:09:19,497 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:09:19,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:09:19,547 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:09:19,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475388733] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:09:19,547 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:09:19,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-18 04:09:19,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217141961] [2022-01-18 04:09:19,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:09:19,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 04:09:19,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:09:19,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 04:09:19,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:09:19,548 INFO L87 Difference]: Start difference. First operand 337181 states and 808656 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:09:21,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:09:21,706 INFO L93 Difference]: Finished difference Result 338000 states and 806990 transitions. [2022-01-18 04:09:21,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 04:09:21,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-01-18 04:09:21,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:09:22,706 INFO L225 Difference]: With dead ends: 338000 [2022-01-18 04:09:22,707 INFO L226 Difference]: Without dead ends: 337997 [2022-01-18 04:09:22,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:09:22,707 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 117 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:09:22,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 96 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:09:23,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337997 states. [2022-01-18 04:09:28,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337997 to 290870. [2022-01-18 04:09:29,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290870 states, 290869 states have (on average 2.39994292963499) internal successors, (698069), 290869 states have internal predecessors, (698069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:09:29,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290870 states to 290870 states and 698069 transitions. [2022-01-18 04:09:29,983 INFO L78 Accepts]: Start accepts. Automaton has 290870 states and 698069 transitions. Word has length 39 [2022-01-18 04:09:29,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:09:29,983 INFO L470 AbstractCegarLoop]: Abstraction has 290870 states and 698069 transitions. [2022-01-18 04:09:29,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:09:29,983 INFO L276 IsEmpty]: Start isEmpty. Operand 290870 states and 698069 transitions. [2022-01-18 04:09:30,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 04:09:30,035 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:09:30,035 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:09:30,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-01-18 04:09:30,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:09:30,236 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:09:30,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:09:30,236 INFO L85 PathProgramCache]: Analyzing trace with hash 815477842, now seen corresponding path program 72 times [2022-01-18 04:09:30,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:09:30,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728325528] [2022-01-18 04:09:30,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:09:30,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:09:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:09:30,258 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:09:30,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:09:30,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728325528] [2022-01-18 04:09:30,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728325528] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:09:30,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051234321] [2022-01-18 04:09:30,258 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:09:30,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:09:30,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:09:30,259 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:09:30,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-01-18 04:09:30,283 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 04:09:30,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:09:30,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:09:30,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:09:30,342 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:09:30,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:09:30,409 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:09:30,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051234321] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:09:30,410 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:09:30,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-18 04:09:30,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406909042] [2022-01-18 04:09:30,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:09:30,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 04:09:30,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:09:30,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 04:09:30,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:09:30,410 INFO L87 Difference]: Start difference. First operand 290870 states and 698069 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:09:32,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:09:32,620 INFO L93 Difference]: Finished difference Result 353721 states and 845549 transitions. [2022-01-18 04:09:32,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 04:09:32,620 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-01-18 04:09:32,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:09:34,350 INFO L225 Difference]: With dead ends: 353721 [2022-01-18 04:09:34,351 INFO L226 Difference]: Without dead ends: 353705 [2022-01-18 04:09:34,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:09:34,351 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 82 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:09:34,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 114 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:09:34,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353705 states. [2022-01-18 04:09:40,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353705 to 352361. [2022-01-18 04:09:40,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352361 states, 352360 states have (on average 2.391792484958565) internal successors, (842772), 352360 states have internal predecessors, (842772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:09:42,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352361 states to 352361 states and 842772 transitions. [2022-01-18 04:09:42,644 INFO L78 Accepts]: Start accepts. Automaton has 352361 states and 842772 transitions. Word has length 39 [2022-01-18 04:09:42,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:09:42,644 INFO L470 AbstractCegarLoop]: Abstraction has 352361 states and 842772 transitions. [2022-01-18 04:09:42,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:09:42,645 INFO L276 IsEmpty]: Start isEmpty. Operand 352361 states and 842772 transitions. [2022-01-18 04:09:42,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 04:09:42,722 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:09:42,722 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:09:42,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-01-18 04:09:42,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2022-01-18 04:09:42,927 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:09:42,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:09:42,928 INFO L85 PathProgramCache]: Analyzing trace with hash 410110102, now seen corresponding path program 73 times [2022-01-18 04:09:42,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:09:42,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509704376] [2022-01-18 04:09:42,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:09:42,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:09:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:09:42,954 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:09:42,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:09:42,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509704376] [2022-01-18 04:09:42,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509704376] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:09:42,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961477844] [2022-01-18 04:09:42,955 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:09:42,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:09:42,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:09:42,960 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:09:42,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-01-18 04:09:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:09:42,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:09:42,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:09:43,054 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 04:09:43,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:09:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 04:09:43,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961477844] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:09:43,121 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:09:43,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-18 04:09:43,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616532300] [2022-01-18 04:09:43,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:09:43,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 04:09:43,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:09:43,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 04:09:43,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:09:43,123 INFO L87 Difference]: Start difference. First operand 352361 states and 842772 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:09:45,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:09:45,245 INFO L93 Difference]: Finished difference Result 362182 states and 862751 transitions. [2022-01-18 04:09:45,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 04:09:45,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-01-18 04:09:45,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:09:46,354 INFO L225 Difference]: With dead ends: 362182 [2022-01-18 04:09:46,354 INFO L226 Difference]: Without dead ends: 362179 [2022-01-18 04:09:46,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:09:46,355 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 93 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:09:46,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 119 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:09:46,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362179 states. [2022-01-18 04:09:52,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362179 to 357027. [2022-01-18 04:09:53,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357027 states, 357026 states have (on average 2.387635634379569) internal successors, (852448), 357026 states have internal predecessors, (852448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:09:55,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357027 states to 357027 states and 852448 transitions. [2022-01-18 04:09:55,087 INFO L78 Accepts]: Start accepts. Automaton has 357027 states and 852448 transitions. Word has length 39 [2022-01-18 04:09:55,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:09:55,087 INFO L470 AbstractCegarLoop]: Abstraction has 357027 states and 852448 transitions. [2022-01-18 04:09:55,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:09:55,087 INFO L276 IsEmpty]: Start isEmpty. Operand 357027 states and 852448 transitions. [2022-01-18 04:09:55,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 04:09:55,141 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:09:55,141 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:09:55,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-01-18 04:09:55,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:09:55,341 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:09:55,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:09:55,342 INFO L85 PathProgramCache]: Analyzing trace with hash 875424144, now seen corresponding path program 74 times [2022-01-18 04:09:55,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:09:55,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748875030] [2022-01-18 04:09:55,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:09:55,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:09:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:09:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:09:55,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:09:55,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748875030] [2022-01-18 04:09:55,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748875030] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:09:55,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101816059] [2022-01-18 04:09:55,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:09:55,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:09:55,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:09:55,369 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:09:55,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-01-18 04:09:55,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:09:55,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:09:55,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:09:55,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:09:55,438 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:09:55,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:09:55,487 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:09:55,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101816059] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:09:55,487 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:09:55,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2022-01-18 04:09:55,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419619806] [2022-01-18 04:09:55,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:09:55,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:09:55,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:09:55,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:09:55,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:09:55,488 INFO L87 Difference]: Start difference. First operand 357027 states and 852448 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:09:57,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:09:57,666 INFO L93 Difference]: Finished difference Result 358971 states and 849352 transitions. [2022-01-18 04:09:57,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 04:09:57,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-01-18 04:09:57,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:09:58,779 INFO L225 Difference]: With dead ends: 358971 [2022-01-18 04:09:58,779 INFO L226 Difference]: Without dead ends: 358968 [2022-01-18 04:09:58,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:09:58,779 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 99 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:09:58,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 112 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:09:59,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358968 states. [2022-01-18 04:10:06,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358968 to 340334. [2022-01-18 04:10:06,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340334 states, 340333 states have (on average 2.3787702044762042) internal successors, (809574), 340333 states have internal predecessors, (809574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:10:09,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340334 states to 340334 states and 809574 transitions. [2022-01-18 04:10:09,098 INFO L78 Accepts]: Start accepts. Automaton has 340334 states and 809574 transitions. Word has length 39 [2022-01-18 04:10:09,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:10:09,098 INFO L470 AbstractCegarLoop]: Abstraction has 340334 states and 809574 transitions. [2022-01-18 04:10:09,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:10:09,098 INFO L276 IsEmpty]: Start isEmpty. Operand 340334 states and 809574 transitions. [2022-01-18 04:10:09,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 04:10:09,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:10:09,167 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:10:09,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-01-18 04:10:09,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:10:09,383 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:10:09,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:10:09,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1935502256, now seen corresponding path program 75 times [2022-01-18 04:10:09,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:10:09,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990652088] [2022-01-18 04:10:09,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:10:09,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:10:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:10:09,412 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:10:09,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:10:09,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990652088] [2022-01-18 04:10:09,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990652088] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:10:09,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655526491] [2022-01-18 04:10:09,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:10:09,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:10:09,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:10:09,422 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:10:09,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-01-18 04:10:09,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 04:10:09,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:10:09,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:10:09,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:10:09,490 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:10:09,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:10:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:10:09,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655526491] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:10:09,542 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:10:09,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2022-01-18 04:10:09,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740050729] [2022-01-18 04:10:09,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:10:09,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:10:09,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:10:09,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:10:09,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:10:09,543 INFO L87 Difference]: Start difference. First operand 340334 states and 809574 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:10:11,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:10:11,691 INFO L93 Difference]: Finished difference Result 341420 states and 811356 transitions. [2022-01-18 04:10:11,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 04:10:11,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 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 [2022-01-18 04:10:11,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:10:12,719 INFO L225 Difference]: With dead ends: 341420 [2022-01-18 04:10:12,719 INFO L226 Difference]: Without dead ends: 341358 [2022-01-18 04:10:12,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:10:12,719 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 98 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:10:12,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 102 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:10:13,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341358 states. [2022-01-18 04:10:19,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341358 to 340312. [2022-01-18 04:10:19,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340312 states, 340311 states have (on average 2.374683745162513) internal successors, (808131), 340311 states have internal predecessors, (808131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:10:21,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340312 states to 340312 states and 808131 transitions. [2022-01-18 04:10:21,036 INFO L78 Accepts]: Start accepts. Automaton has 340312 states and 808131 transitions. Word has length 39 [2022-01-18 04:10:21,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:10:21,036 INFO L470 AbstractCegarLoop]: Abstraction has 340312 states and 808131 transitions. [2022-01-18 04:10:21,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:10:21,036 INFO L276 IsEmpty]: Start isEmpty. Operand 340312 states and 808131 transitions. [2022-01-18 04:10:21,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 04:10:21,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:10:21,092 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:10:21,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-01-18 04:10:21,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2022-01-18 04:10:21,301 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:10:21,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:10:21,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1358420656, now seen corresponding path program 76 times [2022-01-18 04:10:21,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:10:21,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216891146] [2022-01-18 04:10:21,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:10:21,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:10:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:10:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:10:21,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:10:21,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216891146] [2022-01-18 04:10:21,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216891146] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:10:21,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601642601] [2022-01-18 04:10:21,323 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:10:21,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:10:21,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:10:21,324 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:10:21,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-01-18 04:10:21,347 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:10:21,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:10:21,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:10:21,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:10:21,392 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:10:21,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:10:21,441 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:10:21,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601642601] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:10:21,442 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:10:21,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-18 04:10:21,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359391947] [2022-01-18 04:10:21,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:10:21,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 04:10:21,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:10:21,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 04:10:21,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:10:21,442 INFO L87 Difference]: Start difference. First operand 340312 states and 808131 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:10:23,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:10:23,515 INFO L93 Difference]: Finished difference Result 350854 states and 832315 transitions. [2022-01-18 04:10:23,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 04:10:23,516 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-01-18 04:10:23,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:10:24,597 INFO L225 Difference]: With dead ends: 350854 [2022-01-18 04:10:24,597 INFO L226 Difference]: Without dead ends: 350838 [2022-01-18 04:10:24,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:10:24,598 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 57 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:10:24,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 126 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:10:24,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350838 states. [2022-01-18 04:10:30,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350838 to 350557. [2022-01-18 04:10:31,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350557 states, 350556 states have (on average 2.372434076153311) internal successors, (831671), 350556 states have internal predecessors, (831671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:10:33,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350557 states to 350557 states and 831671 transitions. [2022-01-18 04:10:33,129 INFO L78 Accepts]: Start accepts. Automaton has 350557 states and 831671 transitions. Word has length 39 [2022-01-18 04:10:33,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:10:33,129 INFO L470 AbstractCegarLoop]: Abstraction has 350557 states and 831671 transitions. [2022-01-18 04:10:33,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:10:33,129 INFO L276 IsEmpty]: Start isEmpty. Operand 350557 states and 831671 transitions. [2022-01-18 04:10:33,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 04:10:33,187 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:10:33,187 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:10:33,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2022-01-18 04:10:33,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:10:33,387 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:10:33,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:10:33,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1763788396, now seen corresponding path program 77 times [2022-01-18 04:10:33,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:10:33,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742377654] [2022-01-18 04:10:33,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:10:33,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:10:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:10:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:10:33,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:10:33,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742377654] [2022-01-18 04:10:33,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742377654] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:10:33,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883488281] [2022-01-18 04:10:33,410 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:10:33,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:10:33,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:10:33,411 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:10:33,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-01-18 04:10:33,431 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 04:10:33,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:10:33,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:10:33,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:10:33,483 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:10:33,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:10:33,532 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:10:33,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883488281] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:10:33,532 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:10:33,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-18 04:10:33,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758862941] [2022-01-18 04:10:33,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:10:33,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 04:10:33,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:10:33,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 04:10:33,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:10:33,533 INFO L87 Difference]: Start difference. First operand 350557 states and 831671 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:10:35,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:10:35,767 INFO L93 Difference]: Finished difference Result 356211 states and 843397 transitions. [2022-01-18 04:10:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 04:10:35,768 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-01-18 04:10:35,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:10:36,829 INFO L225 Difference]: With dead ends: 356211 [2022-01-18 04:10:36,829 INFO L226 Difference]: Without dead ends: 356208 [2022-01-18 04:10:36,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:10:36,830 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 68 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:10:36,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 115 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:10:37,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356208 states. [2022-01-18 04:10:43,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356208 to 352212. [2022-01-18 04:10:44,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352212 states, 352211 states have (on average 2.371021915840221) internal successors, (835100), 352211 states have internal predecessors, (835100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:10:45,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352212 states to 352212 states and 835100 transitions. [2022-01-18 04:10:45,305 INFO L78 Accepts]: Start accepts. Automaton has 352212 states and 835100 transitions. Word has length 39 [2022-01-18 04:10:45,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:10:45,305 INFO L470 AbstractCegarLoop]: Abstraction has 352212 states and 835100 transitions. [2022-01-18 04:10:45,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:10:45,305 INFO L276 IsEmpty]: Start isEmpty. Operand 352212 states and 835100 transitions. [2022-01-18 04:10:45,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 04:10:45,377 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:10:45,377 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:10:45,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-01-18 04:10:45,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:10:45,591 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:10:45,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:10:45,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1298474354, now seen corresponding path program 78 times [2022-01-18 04:10:45,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:10:45,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374212808] [2022-01-18 04:10:45,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:10:45,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:10:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:10:45,614 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:10:45,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:10:45,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374212808] [2022-01-18 04:10:45,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374212808] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:10:45,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811638556] [2022-01-18 04:10:45,614 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:10:45,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:10:45,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:10:45,615 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:10:45,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-01-18 04:10:45,637 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 04:10:45,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:10:45,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:10:45,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:10:45,689 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:10:45,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:10:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:10:45,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811638556] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:10:45,739 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:10:45,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2022-01-18 04:10:45,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049363047] [2022-01-18 04:10:45,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:10:45,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:10:45,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:10:45,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:10:45,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:10:45,740 INFO L87 Difference]: Start difference. First operand 352212 states and 835100 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:10:47,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:10:47,996 INFO L93 Difference]: Finished difference Result 359965 states and 850571 transitions. [2022-01-18 04:10:47,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 04:10:47,996 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-01-18 04:10:47,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:10:49,538 INFO L225 Difference]: With dead ends: 359965 [2022-01-18 04:10:49,538 INFO L226 Difference]: Without dead ends: 359953 [2022-01-18 04:10:49,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:10:49,538 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 84 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:10:49,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 120 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:10:49,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359953 states. [2022-01-18 04:10:56,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359953 to 357309. [2022-01-18 04:10:56,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357309 states, 357308 states have (on average 2.364495057485419) internal successors, (844853), 357308 states have internal predecessors, (844853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:10:58,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357309 states to 357309 states and 844853 transitions. [2022-01-18 04:10:58,286 INFO L78 Accepts]: Start accepts. Automaton has 357309 states and 844853 transitions. Word has length 39 [2022-01-18 04:10:58,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:10:58,286 INFO L470 AbstractCegarLoop]: Abstraction has 357309 states and 844853 transitions. [2022-01-18 04:10:58,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:10:58,286 INFO L276 IsEmpty]: Start isEmpty. Operand 357309 states and 844853 transitions. [2022-01-18 04:10:58,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 04:10:58,354 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:10:58,354 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:10:58,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-01-18 04:10:58,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:10:58,559 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:10:58,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:10:58,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1663842512, now seen corresponding path program 79 times [2022-01-18 04:10:58,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:10:58,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917744205] [2022-01-18 04:10:58,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:10:58,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:10:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:10:58,591 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:10:58,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:10:58,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917744205] [2022-01-18 04:10:58,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917744205] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:10:58,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154008071] [2022-01-18 04:10:58,592 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:10:58,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:10:58,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:10:58,593 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:10:58,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-01-18 04:10:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:10:58,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:10:58,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:10:58,679 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:10:58,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:10:58,729 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:10:58,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154008071] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:10:58,729 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:10:58,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-01-18 04:10:58,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941770287] [2022-01-18 04:10:58,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:10:58,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 04:10:58,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:10:58,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 04:10:58,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-18 04:10:58,730 INFO L87 Difference]: Start difference. First operand 357309 states and 844853 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:11:00,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:11:00,712 INFO L93 Difference]: Finished difference Result 357767 states and 843492 transitions. [2022-01-18 04:11:00,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 04:11:00,712 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-01-18 04:11:00,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:11:02,373 INFO L225 Difference]: With dead ends: 357767 [2022-01-18 04:11:02,373 INFO L226 Difference]: Without dead ends: 357755 [2022-01-18 04:11:02,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:11:02,373 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 84 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:11:02,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 142 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:11:02,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357755 states. [2022-01-18 04:11:08,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357755 to 350533. [2022-01-18 04:11:09,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350533 states, 350532 states have (on average 2.362486163888033) internal successors, (828127), 350532 states have internal predecessors, (828127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:11:10,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350533 states to 350533 states and 828127 transitions. [2022-01-18 04:11:10,950 INFO L78 Accepts]: Start accepts. Automaton has 350533 states and 828127 transitions. Word has length 39 [2022-01-18 04:11:10,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:11:10,950 INFO L470 AbstractCegarLoop]: Abstraction has 350533 states and 828127 transitions. [2022-01-18 04:11:10,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:11:10,950 INFO L276 IsEmpty]: Start isEmpty. Operand 350533 states and 828127 transitions. [2022-01-18 04:11:11,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-18 04:11:11,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:11:11,054 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:11:11,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-01-18 04:11:11,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable91 [2022-01-18 04:11:11,258 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:11:11,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:11:11,258 INFO L85 PathProgramCache]: Analyzing trace with hash -82315980, now seen corresponding path program 80 times [2022-01-18 04:11:11,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:11:11,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853417614] [2022-01-18 04:11:11,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:11:11,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:11:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:11:11,324 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 4 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:11:11,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:11:11,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853417614] [2022-01-18 04:11:11,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853417614] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:11:11,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295593722] [2022-01-18 04:11:11,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:11:11,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:11:11,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:11:11,325 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:11:11,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-01-18 04:11:11,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:11:11,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:11:11,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 04:11:11,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:11:11,437 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 17 proven. 29 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:11:11,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:11:11,485 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 36 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:11:11,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295593722] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:11:11,486 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:11:11,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 17 [2022-01-18 04:11:11,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673235356] [2022-01-18 04:11:11,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:11:11,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:11:11,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:11:11,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:11:11,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:11:11,487 INFO L87 Difference]: Start difference. First operand 350533 states and 828127 transitions. Second operand has 17 states, 17 states have (on average 4.0) internal successors, (68), 17 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:11:12,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:11:12,671 INFO L93 Difference]: Finished difference Result 257099 states and 593352 transitions. [2022-01-18 04:11:12,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 04:11:12,672 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 17 states have internal predecessors, (68), 0 states have call successors, (0), 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 41 [2022-01-18 04:11:12,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:11:14,006 INFO L225 Difference]: With dead ends: 257099 [2022-01-18 04:11:14,006 INFO L226 Difference]: Without dead ends: 257099 [2022-01-18 04:11:14,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2022-01-18 04:11:14,007 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 216 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:11:14,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 466 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:11:14,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257099 states. [2022-01-18 04:11:17,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257099 to 150344. [2022-01-18 04:11:17,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150344 states, 150343 states have (on average 2.301171321577992) internal successors, (345965), 150343 states have internal predecessors, (345965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:11:18,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150344 states to 150344 states and 345965 transitions. [2022-01-18 04:11:18,265 INFO L78 Accepts]: Start accepts. Automaton has 150344 states and 345965 transitions. Word has length 41 [2022-01-18 04:11:18,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:11:18,266 INFO L470 AbstractCegarLoop]: Abstraction has 150344 states and 345965 transitions. [2022-01-18 04:11:18,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 17 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:11:18,266 INFO L276 IsEmpty]: Start isEmpty. Operand 150344 states and 345965 transitions. [2022-01-18 04:11:18,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-18 04:11:18,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:11:18,328 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:11:18,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-01-18 04:11:18,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:11:18,528 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:11:18,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:11:18,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1495522452, now seen corresponding path program 81 times [2022-01-18 04:11:18,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:11:18,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129652979] [2022-01-18 04:11:18,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:11:18,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:11:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:11:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:11:18,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:11:18,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129652979] [2022-01-18 04:11:18,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129652979] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:11:18,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45552356] [2022-01-18 04:11:18,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:11:18,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:11:18,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:11:18,580 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:11:18,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-01-18 04:11:18,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 04:11:18,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:11:18,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 04:11:18,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:11:18,691 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:11:18,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:11:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 04:11:18,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45552356] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:11:18,741 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:11:18,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 17 [2022-01-18 04:11:18,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961204578] [2022-01-18 04:11:18,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:11:18,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:11:18,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:11:18,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:11:18,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:11:18,742 INFO L87 Difference]: Start difference. First operand 150344 states and 345965 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:11:19,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:11:19,481 INFO L93 Difference]: Finished difference Result 144159 states and 325044 transitions. [2022-01-18 04:11:19,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 04:11:19,481 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 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 41 [2022-01-18 04:11:19,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:11:19,799 INFO L225 Difference]: With dead ends: 144159 [2022-01-18 04:11:19,799 INFO L226 Difference]: Without dead ends: 144001 [2022-01-18 04:11:19,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2022-01-18 04:11:19,800 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 494 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:11:19,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [494 Valid, 354 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:11:20,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144001 states. [2022-01-18 04:11:22,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144001 to 131031. [2022-01-18 04:11:22,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131031 states, 131030 states have (on average 2.254582919941998) internal successors, (295418), 131030 states have internal predecessors, (295418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:11:23,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131031 states to 131031 states and 295418 transitions. [2022-01-18 04:11:23,006 INFO L78 Accepts]: Start accepts. Automaton has 131031 states and 295418 transitions. Word has length 41 [2022-01-18 04:11:23,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:11:23,006 INFO L470 AbstractCegarLoop]: Abstraction has 131031 states and 295418 transitions. [2022-01-18 04:11:23,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:11:23,007 INFO L276 IsEmpty]: Start isEmpty. Operand 131031 states and 295418 transitions. [2022-01-18 04:11:23,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-18 04:11:23,058 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:11:23,058 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:11:23,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-01-18 04:11:23,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:11:23,259 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:11:23,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:11:23,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1555357781, now seen corresponding path program 82 times [2022-01-18 04:11:23,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:11:23,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280911272] [2022-01-18 04:11:23,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:11:23,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:11:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:11:23,410 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:11:23,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:11:23,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280911272] [2022-01-18 04:11:23,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280911272] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:11:23,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707605170] [2022-01-18 04:11:23,410 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:11:23,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:11:23,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:11:23,411 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:11:23,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-01-18 04:11:23,431 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:11:23,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:11:23,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 04:11:23,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:11:23,684 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:11:23,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:11:24,006 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:11:24,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707605170] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:11:24,007 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:11:24,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 27 [2022-01-18 04:11:24,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820211199] [2022-01-18 04:11:24,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:11:24,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 04:11:24,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:11:24,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 04:11:24,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2022-01-18 04:11:24,008 INFO L87 Difference]: Start difference. First operand 131031 states and 295418 transitions. Second operand has 28 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 27 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:11:26,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:11:26,617 INFO L93 Difference]: Finished difference Result 155842 states and 350763 transitions. [2022-01-18 04:11:26,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 04:11:26,618 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 27 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-01-18 04:11:26,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:11:27,047 INFO L225 Difference]: With dead ends: 155842 [2022-01-18 04:11:27,047 INFO L226 Difference]: Without dead ends: 155767 [2022-01-18 04:11:27,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 63 SyntacticMatches, 6 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=494, Invalid=4336, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 04:11:27,048 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 506 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:11:27,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 1454 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:11:27,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155767 states. [2022-01-18 04:11:29,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155767 to 134288. [2022-01-18 04:11:29,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134288 states, 134287 states have (on average 2.2562198872563988) internal successors, (302981), 134287 states have internal predecessors, (302981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:11:29,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134288 states to 134288 states and 302981 transitions. [2022-01-18 04:11:29,899 INFO L78 Accepts]: Start accepts. Automaton has 134288 states and 302981 transitions. Word has length 42 [2022-01-18 04:11:29,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:11:29,899 INFO L470 AbstractCegarLoop]: Abstraction has 134288 states and 302981 transitions. [2022-01-18 04:11:29,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 27 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:11:29,899 INFO L276 IsEmpty]: Start isEmpty. Operand 134288 states and 302981 transitions. [2022-01-18 04:11:29,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-18 04:11:29,960 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:11:29,960 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:11:29,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-01-18 04:11:30,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:11:30,161 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:11:30,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:11:30,162 INFO L85 PathProgramCache]: Analyzing trace with hash 80278243, now seen corresponding path program 83 times [2022-01-18 04:11:30,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:11:30,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190227295] [2022-01-18 04:11:30,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:11:30,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:11:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:11:30,316 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:11:30,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:11:30,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190227295] [2022-01-18 04:11:30,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190227295] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:11:30,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636991847] [2022-01-18 04:11:30,317 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:11:30,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:11:30,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:11:30,318 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:11:30,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-01-18 04:11:30,338 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 04:11:30,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:11:30,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 04:11:30,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:11:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:11:30,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:11:30,926 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 40 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:11:30,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636991847] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:11:30,926 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:11:30,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 27 [2022-01-18 04:11:30,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570988887] [2022-01-18 04:11:30,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:11:30,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 04:11:30,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:11:30,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 04:11:30,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2022-01-18 04:11:30,927 INFO L87 Difference]: Start difference. First operand 134288 states and 302981 transitions. Second operand has 28 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 27 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:11:33,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:11:33,159 INFO L93 Difference]: Finished difference Result 163784 states and 369053 transitions. [2022-01-18 04:11:33,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 04:11:33,160 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 27 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-01-18 04:11:33,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:11:33,532 INFO L225 Difference]: With dead ends: 163784 [2022-01-18 04:11:33,532 INFO L226 Difference]: Without dead ends: 163678 [2022-01-18 04:11:33,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 63 SyntacticMatches, 6 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=429, Invalid=3231, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 04:11:33,532 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 373 mSDsluCounter, 1998 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:11:33,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 1743 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:11:33,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163678 states. [2022-01-18 04:11:36,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163678 to 142342. [2022-01-18 04:11:36,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142342 states, 142341 states have (on average 2.2571360324853695) internal successors, (321283), 142341 states have internal predecessors, (321283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:11:37,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142342 states to 142342 states and 321283 transitions. [2022-01-18 04:11:37,052 INFO L78 Accepts]: Start accepts. Automaton has 142342 states and 321283 transitions. Word has length 42 [2022-01-18 04:11:37,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:11:37,052 INFO L470 AbstractCegarLoop]: Abstraction has 142342 states and 321283 transitions. [2022-01-18 04:11:37,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 27 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:11:37,052 INFO L276 IsEmpty]: Start isEmpty. Operand 142342 states and 321283 transitions. [2022-01-18 04:11:37,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-18 04:11:37,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:11:37,106 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:11:37,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-01-18 04:11:37,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:11:37,307 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:11:37,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:11:37,307 INFO L85 PathProgramCache]: Analyzing trace with hash 2095685291, now seen corresponding path program 84 times [2022-01-18 04:11:37,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:11:37,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764559024] [2022-01-18 04:11:37,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:11:37,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:11:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:11:37,450 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:11:37,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:11:37,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764559024] [2022-01-18 04:11:37,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764559024] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:11:37,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630462274] [2022-01-18 04:11:37,451 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:11:37,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:11:37,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:11:37,452 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:11:37,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-01-18 04:11:37,473 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-01-18 04:11:37,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:11:37,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 04:11:37,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:11:37,783 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 41 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:11:37,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:11:38,098 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:11:38,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630462274] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:11:38,099 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:11:38,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 30 [2022-01-18 04:11:38,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130804482] [2022-01-18 04:11:38,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:11:38,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 04:11:38,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:11:38,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 04:11:38,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=803, Unknown=0, NotChecked=0, Total=930 [2022-01-18 04:11:38,100 INFO L87 Difference]: Start difference. First operand 142342 states and 321283 transitions. Second operand has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 30 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) [2022-01-18 04:11:40,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:11:40,703 INFO L93 Difference]: Finished difference Result 179901 states and 405654 transitions. [2022-01-18 04:11:40,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-18 04:11:40,703 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 30 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 42 [2022-01-18 04:11:40,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:11:41,082 INFO L225 Difference]: With dead ends: 179901 [2022-01-18 04:11:41,083 INFO L226 Difference]: Without dead ends: 179789 [2022-01-18 04:11:41,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 61 SyntacticMatches, 5 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1432 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=600, Invalid=4950, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 04:11:41,083 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 462 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:11:41,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 1952 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:11:41,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179789 states. [2022-01-18 04:11:43,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179789 to 152957. [2022-01-18 04:11:43,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152957 states, 152956 states have (on average 2.259434085619394) internal successors, (345594), 152956 states have internal predecessors, (345594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:11:44,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152957 states to 152957 states and 345594 transitions. [2022-01-18 04:11:44,538 INFO L78 Accepts]: Start accepts. Automaton has 152957 states and 345594 transitions. Word has length 42 [2022-01-18 04:11:44,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:11:44,539 INFO L470 AbstractCegarLoop]: Abstraction has 152957 states and 345594 transitions. [2022-01-18 04:11:44,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 30 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) [2022-01-18 04:11:44,539 INFO L276 IsEmpty]: Start isEmpty. Operand 152957 states and 345594 transitions. [2022-01-18 04:11:44,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-18 04:11:44,631 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:11:44,631 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:11:44,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-01-18 04:11:44,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2022-01-18 04:11:44,831 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:11:44,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:11:44,832 INFO L85 PathProgramCache]: Analyzing trace with hash -817478237, now seen corresponding path program 85 times [2022-01-18 04:11:44,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:11:44,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161645740] [2022-01-18 04:11:44,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:11:44,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:11:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:11:44,975 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:11:44,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:11:44,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161645740] [2022-01-18 04:11:44,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161645740] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:11:44,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131786711] [2022-01-18 04:11:44,975 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:11:44,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:11:44,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:11:44,976 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:11:44,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-01-18 04:11:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:11:44,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 04:11:44,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:11:45,265 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:11:45,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:11:45,560 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 41 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:11:45,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131786711] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:11:45,560 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:11:45,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 27 [2022-01-18 04:11:45,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750317214] [2022-01-18 04:11:45,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:11:45,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 04:11:45,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:11:45,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 04:11:45,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2022-01-18 04:11:45,561 INFO L87 Difference]: Start difference. First operand 152957 states and 345594 transitions. Second operand has 28 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 27 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:11:48,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:11:48,028 INFO L93 Difference]: Finished difference Result 171427 states and 387538 transitions. [2022-01-18 04:11:48,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-18 04:11:48,029 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 27 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-01-18 04:11:48,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:11:48,823 INFO L225 Difference]: With dead ends: 171427 [2022-01-18 04:11:48,823 INFO L226 Difference]: Without dead ends: 171305 [2022-01-18 04:11:48,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 63 SyntacticMatches, 6 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1458 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=666, Invalid=5186, Unknown=0, NotChecked=0, Total=5852 [2022-01-18 04:11:48,824 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 487 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:11:48,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 1294 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:11:48,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171305 states. [2022-01-18 04:11:51,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171305 to 155677. [2022-01-18 04:11:51,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155677 states, 155676 states have (on average 2.2593334874996787) internal successors, (351724), 155676 states have internal predecessors, (351724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:11:51,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155677 states to 155677 states and 351724 transitions. [2022-01-18 04:11:51,773 INFO L78 Accepts]: Start accepts. Automaton has 155677 states and 351724 transitions. Word has length 42 [2022-01-18 04:11:51,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:11:51,774 INFO L470 AbstractCegarLoop]: Abstraction has 155677 states and 351724 transitions. [2022-01-18 04:11:51,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 27 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:11:51,774 INFO L276 IsEmpty]: Start isEmpty. Operand 155677 states and 351724 transitions. [2022-01-18 04:11:51,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-18 04:11:51,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:11:51,837 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:11:51,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-01-18 04:11:52,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2022-01-18 04:11:52,038 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:11:52,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:11:52,038 INFO L85 PathProgramCache]: Analyzing trace with hash -873008797, now seen corresponding path program 86 times [2022-01-18 04:11:52,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:11:52,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643512254] [2022-01-18 04:11:52,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:11:52,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:11:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:11:52,181 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:11:52,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:11:52,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643512254] [2022-01-18 04:11:52,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643512254] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:11:52,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232770333] [2022-01-18 04:11:52,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:11:52,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:11:52,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:11:52,183 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:11:52,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-01-18 04:11:52,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:11:52,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:11:52,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 04:11:52,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:11:52,523 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 41 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:11:52,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:11:53,268 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 41 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:11:53,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232770333] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:11:53,269 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:11:53,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 11] total 26 [2022-01-18 04:11:53,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786737294] [2022-01-18 04:11:53,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:11:53,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 04:11:53,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:11:53,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 04:11:53,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2022-01-18 04:11:53,269 INFO L87 Difference]: Start difference. First operand 155677 states and 351724 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:11:54,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:11:54,919 INFO L93 Difference]: Finished difference Result 190477 states and 430272 transitions. [2022-01-18 04:11:54,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 04:11:54,920 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-01-18 04:11:54,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:11:55,428 INFO L225 Difference]: With dead ends: 190477 [2022-01-18 04:11:55,428 INFO L226 Difference]: Without dead ends: 190347 [2022-01-18 04:11:55,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 64 SyntacticMatches, 6 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=348, Invalid=2958, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 04:11:55,429 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 350 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:11:55,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 1389 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:11:55,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190347 states. [2022-01-18 04:11:58,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190347 to 164486. [2022-01-18 04:11:58,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164486 states, 164485 states have (on average 2.259871720825607) internal successors, (371715), 164485 states have internal predecessors, (371715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:11:59,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164486 states to 164486 states and 371715 transitions. [2022-01-18 04:11:59,241 INFO L78 Accepts]: Start accepts. Automaton has 164486 states and 371715 transitions. Word has length 42 [2022-01-18 04:11:59,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:11:59,241 INFO L470 AbstractCegarLoop]: Abstraction has 164486 states and 371715 transitions. [2022-01-18 04:11:59,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:11:59,241 INFO L276 IsEmpty]: Start isEmpty. Operand 164486 states and 371715 transitions. [2022-01-18 04:11:59,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-18 04:11:59,301 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:11:59,301 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:11:59,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-01-18 04:11:59,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:11:59,501 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:11:59,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:11:59,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1458533117, now seen corresponding path program 87 times [2022-01-18 04:11:59,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:11:59,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824892202] [2022-01-18 04:11:59,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:11:59,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:11:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:11:59,652 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:11:59,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:11:59,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824892202] [2022-01-18 04:11:59,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824892202] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:11:59,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493485942] [2022-01-18 04:11:59,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:11:59,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:11:59,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:11:59,653 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:11:59,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-01-18 04:11:59,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 04:11:59,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:11:59,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 04:11:59,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:00,388 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:12:00,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:00,782 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 04:12:00,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493485942] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:00,782 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:00,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 9] total 29 [2022-01-18 04:12:00,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114548558] [2022-01-18 04:12:00,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:00,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 04:12:00,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:00,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 04:12:00,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2022-01-18 04:12:00,783 INFO L87 Difference]: Start difference. First operand 164486 states and 371715 transitions. Second operand has 30 states, 30 states have (on average 3.3666666666666667) internal successors, (101), 29 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:03,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:03,418 INFO L93 Difference]: Finished difference Result 230260 states and 519826 transitions. [2022-01-18 04:12:03,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 04:12:03,419 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.3666666666666667) internal successors, (101), 29 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-01-18 04:12:03,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:04,448 INFO L225 Difference]: With dead ends: 230260 [2022-01-18 04:12:04,448 INFO L226 Difference]: Without dead ends: 230067 [2022-01-18 04:12:04,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 61 SyntacticMatches, 6 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1240 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=560, Invalid=4842, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 04:12:04,449 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 403 mSDsluCounter, 2682 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 2507 SdHoareTripleChecker+Invalid, 1961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:04,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 2507 Invalid, 1961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1883 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 04:12:04,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230067 states. [2022-01-18 04:12:08,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230067 to 171304. [2022-01-18 04:12:08,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171304 states, 171303 states have (on average 2.257812180755737) internal successors, (386770), 171303 states have internal predecessors, (386770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:08,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171304 states to 171304 states and 386770 transitions. [2022-01-18 04:12:08,631 INFO L78 Accepts]: Start accepts. Automaton has 171304 states and 386770 transitions. Word has length 42 [2022-01-18 04:12:08,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:08,631 INFO L470 AbstractCegarLoop]: Abstraction has 171304 states and 386770 transitions. [2022-01-18 04:12:08,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.3666666666666667) internal successors, (101), 29 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:08,631 INFO L276 IsEmpty]: Start isEmpty. Operand 171304 states and 386770 transitions. [2022-01-18 04:12:08,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-18 04:12:08,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:08,725 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:08,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-01-18 04:12:08,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:08,925 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:12:08,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:08,926 INFO L85 PathProgramCache]: Analyzing trace with hash -641069333, now seen corresponding path program 88 times [2022-01-18 04:12:08,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:08,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376273909] [2022-01-18 04:12:08,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:08,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:09,095 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:12:09,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:09,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376273909] [2022-01-18 04:12:09,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376273909] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:09,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236616331] [2022-01-18 04:12:09,096 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:12:09,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:09,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:09,097 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:12:09,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-01-18 04:12:09,120 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:12:09,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:09,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 04:12:09,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:09,499 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:12:09,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:09,840 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 41 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:12:09,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236616331] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:09,841 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:09,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 28 [2022-01-18 04:12:09,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404673343] [2022-01-18 04:12:09,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:09,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-18 04:12:09,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:09,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-18 04:12:09,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2022-01-18 04:12:09,842 INFO L87 Difference]: Start difference. First operand 171304 states and 386770 transitions. Second operand has 29 states, 29 states have (on average 2.9310344827586206) internal successors, (85), 28 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) [2022-01-18 04:12:12,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:12,426 INFO L93 Difference]: Finished difference Result 185433 states and 417528 transitions. [2022-01-18 04:12:12,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 04:12:12,426 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.9310344827586206) internal successors, (85), 28 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 42 [2022-01-18 04:12:12,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:12,984 INFO L225 Difference]: With dead ends: 185433 [2022-01-18 04:12:12,984 INFO L226 Difference]: Without dead ends: 185335 [2022-01-18 04:12:12,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 63 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=331, Invalid=2861, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 04:12:12,985 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 399 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:12,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 1422 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:12:13,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185335 states. [2022-01-18 04:12:16,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185335 to 174408. [2022-01-18 04:12:16,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174408 states, 174407 states have (on average 2.2562454488638646) internal successors, (393505), 174407 states have internal predecessors, (393505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:17,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174408 states to 174408 states and 393505 transitions. [2022-01-18 04:12:17,398 INFO L78 Accepts]: Start accepts. Automaton has 174408 states and 393505 transitions. Word has length 42 [2022-01-18 04:12:17,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:17,398 INFO L470 AbstractCegarLoop]: Abstraction has 174408 states and 393505 transitions. [2022-01-18 04:12:17,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.9310344827586206) internal successors, (85), 28 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) [2022-01-18 04:12:17,398 INFO L276 IsEmpty]: Start isEmpty. Operand 174408 states and 393505 transitions. [2022-01-18 04:12:17,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-18 04:12:17,523 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:17,523 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:17,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-01-18 04:12:17,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2022-01-18 04:12:17,749 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:12:17,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:17,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1507065211, now seen corresponding path program 89 times [2022-01-18 04:12:17,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:17,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484098982] [2022-01-18 04:12:17,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:17,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:17,933 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:17,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:17,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484098982] [2022-01-18 04:12:17,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484098982] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:17,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508082125] [2022-01-18 04:12:17,933 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:12:17,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:17,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:17,934 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:12:17,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-01-18 04:12:17,960 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 04:12:17,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:17,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 04:12:17,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:18,325 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:12:18,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:18,680 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:12:18,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508082125] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:18,681 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:18,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 29 [2022-01-18 04:12:18,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444626761] [2022-01-18 04:12:18,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:18,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 04:12:18,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:18,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 04:12:18,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2022-01-18 04:12:18,682 INFO L87 Difference]: Start difference. First operand 174408 states and 393505 transitions. Second operand has 30 states, 30 states have (on average 2.8333333333333335) internal successors, (85), 29 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) [2022-01-18 04:12:21,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:21,292 INFO L93 Difference]: Finished difference Result 192221 states and 434093 transitions. [2022-01-18 04:12:21,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 04:12:21,293 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.8333333333333335) internal successors, (85), 29 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 42 [2022-01-18 04:12:21,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:21,771 INFO L225 Difference]: With dead ends: 192221 [2022-01-18 04:12:21,772 INFO L226 Difference]: Without dead ends: 192171 [2022-01-18 04:12:21,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 61 SyntacticMatches, 6 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1353 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=649, Invalid=4607, Unknown=0, NotChecked=0, Total=5256 [2022-01-18 04:12:21,772 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 439 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:21,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 1208 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:12:21,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192171 states. [2022-01-18 04:12:25,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192171 to 175638. [2022-01-18 04:12:25,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175638 states, 175637 states have (on average 2.2555725729772202) internal successors, (396162), 175637 states have internal predecessors, (396162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:25,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175638 states to 175638 states and 396162 transitions. [2022-01-18 04:12:25,941 INFO L78 Accepts]: Start accepts. Automaton has 175638 states and 396162 transitions. Word has length 42 [2022-01-18 04:12:25,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:25,941 INFO L470 AbstractCegarLoop]: Abstraction has 175638 states and 396162 transitions. [2022-01-18 04:12:25,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.8333333333333335) internal successors, (85), 29 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) [2022-01-18 04:12:25,941 INFO L276 IsEmpty]: Start isEmpty. Operand 175638 states and 396162 transitions. [2022-01-18 04:12:26,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-18 04:12:26,030 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:26,030 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:26,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-01-18 04:12:26,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:26,243 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:12:26,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:26,244 INFO L85 PathProgramCache]: Analyzing trace with hash 2108010061, now seen corresponding path program 90 times [2022-01-18 04:12:26,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:26,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477906968] [2022-01-18 04:12:26,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:26,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:26,404 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:12:26,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:26,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477906968] [2022-01-18 04:12:26,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477906968] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:26,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173552384] [2022-01-18 04:12:26,404 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:12:26,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:26,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:26,405 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:12:26,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-01-18 04:12:26,429 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 04:12:26,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:26,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 04:12:26,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:26,770 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:12:26,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 41 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:12:27,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173552384] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:27,068 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:27,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 28 [2022-01-18 04:12:27,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004885032] [2022-01-18 04:12:27,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:27,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-18 04:12:27,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:27,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-18 04:12:27,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2022-01-18 04:12:27,069 INFO L87 Difference]: Start difference. First operand 175638 states and 396162 transitions. Second operand has 29 states, 29 states have (on average 2.9310344827586206) internal successors, (85), 28 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) [2022-01-18 04:12:29,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:29,365 INFO L93 Difference]: Finished difference Result 201196 states and 454179 transitions. [2022-01-18 04:12:29,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 04:12:29,365 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.9310344827586206) internal successors, (85), 28 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 42 [2022-01-18 04:12:29,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:29,866 INFO L225 Difference]: With dead ends: 201196 [2022-01-18 04:12:29,867 INFO L226 Difference]: Without dead ends: 201118 [2022-01-18 04:12:29,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 63 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=373, Invalid=2707, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 04:12:29,867 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 261 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:29,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 1185 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:12:30,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201118 states. [2022-01-18 04:12:33,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201118 to 173991. [2022-01-18 04:12:33,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173991 states, 173990 states have (on average 2.256411288005058) internal successors, (392593), 173990 states have internal predecessors, (392593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:33,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173991 states to 173991 states and 392593 transitions. [2022-01-18 04:12:33,798 INFO L78 Accepts]: Start accepts. Automaton has 173991 states and 392593 transitions. Word has length 42 [2022-01-18 04:12:33,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:33,798 INFO L470 AbstractCegarLoop]: Abstraction has 173991 states and 392593 transitions. [2022-01-18 04:12:33,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.9310344827586206) internal successors, (85), 28 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) [2022-01-18 04:12:33,798 INFO L276 IsEmpty]: Start isEmpty. Operand 173991 states and 392593 transitions. [2022-01-18 04:12:33,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-18 04:12:33,877 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:33,877 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:33,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-01-18 04:12:34,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-01-18 04:12:34,078 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:12:34,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:34,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1299294989, now seen corresponding path program 91 times [2022-01-18 04:12:34,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:34,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216677526] [2022-01-18 04:12:34,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:34,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:34,222 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:12:34,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:34,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216677526] [2022-01-18 04:12:34,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216677526] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:34,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638932076] [2022-01-18 04:12:34,223 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:12:34,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:34,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:34,224 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:12:34,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-01-18 04:12:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:34,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 04:12:34,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:12:35,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 41 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:12:35,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638932076] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:35,339 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:35,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 11] total 26 [2022-01-18 04:12:35,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251000359] [2022-01-18 04:12:35,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:35,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 04:12:35,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:35,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 04:12:35,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-01-18 04:12:35,340 INFO L87 Difference]: Start difference. First operand 173991 states and 392593 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:36,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:36,990 INFO L93 Difference]: Finished difference Result 203527 states and 459273 transitions. [2022-01-18 04:12:36,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 04:12:36,990 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-01-18 04:12:36,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:37,561 INFO L225 Difference]: With dead ends: 203527 [2022-01-18 04:12:37,561 INFO L226 Difference]: Without dead ends: 203409 [2022-01-18 04:12:37,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 64 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=277, Invalid=2273, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 04:12:37,562 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 330 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:37,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 1219 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:12:38,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203409 states. [2022-01-18 04:12:40,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203409 to 176754. [2022-01-18 04:12:40,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176754 states, 176753 states have (on average 2.2560522310795292) internal successors, (398764), 176753 states have internal predecessors, (398764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:41,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176754 states to 176754 states and 398764 transitions. [2022-01-18 04:12:41,438 INFO L78 Accepts]: Start accepts. Automaton has 176754 states and 398764 transitions. Word has length 42 [2022-01-18 04:12:41,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:41,438 INFO L470 AbstractCegarLoop]: Abstraction has 176754 states and 398764 transitions. [2022-01-18 04:12:41,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:41,438 INFO L276 IsEmpty]: Start isEmpty. Operand 176754 states and 398764 transitions. [2022-01-18 04:12:42,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-18 04:12:42,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:42,045 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:42,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-01-18 04:12:42,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-01-18 04:12:42,259 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:12:42,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:42,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1552315221, now seen corresponding path program 92 times [2022-01-18 04:12:42,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:42,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890253931] [2022-01-18 04:12:42,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:42,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:42,398 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:12:42,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:42,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890253931] [2022-01-18 04:12:42,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890253931] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:42,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987008009] [2022-01-18 04:12:42,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:12:42,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:42,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:42,399 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:12:42,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-01-18 04:12:42,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:12:42,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:42,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 04:12:42,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:42,695 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:12:42,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:42,988 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:12:42,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987008009] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:42,988 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:42,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 27 [2022-01-18 04:12:42,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253850412] [2022-01-18 04:12:42,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:42,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 04:12:42,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:42,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 04:12:42,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2022-01-18 04:12:42,989 INFO L87 Difference]: Start difference. First operand 176754 states and 398764 transitions. Second operand has 28 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 27 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:45,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:45,269 INFO L93 Difference]: Finished difference Result 191220 states and 431180 transitions. [2022-01-18 04:12:45,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 04:12:45,270 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 27 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-01-18 04:12:45,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:46,215 INFO L225 Difference]: With dead ends: 191220 [2022-01-18 04:12:46,216 INFO L226 Difference]: Without dead ends: 191130 [2022-01-18 04:12:46,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 63 SyntacticMatches, 6 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=440, Invalid=3592, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 04:12:46,216 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 356 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 1667 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:46,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 1507 Invalid, 1812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1667 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:12:46,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191130 states. [2022-01-18 04:12:48,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191130 to 185093. [2022-01-18 04:12:49,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185093 states, 185092 states have (on average 2.257336891924016) internal successors, (417815), 185092 states have internal predecessors, (417815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:50,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185093 states to 185093 states and 417815 transitions. [2022-01-18 04:12:50,095 INFO L78 Accepts]: Start accepts. Automaton has 185093 states and 417815 transitions. Word has length 42 [2022-01-18 04:12:50,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:50,095 INFO L470 AbstractCegarLoop]: Abstraction has 185093 states and 417815 transitions. [2022-01-18 04:12:50,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 27 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:50,096 INFO L276 IsEmpty]: Start isEmpty. Operand 185093 states and 417815 transitions. [2022-01-18 04:12:50,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-18 04:12:50,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:50,181 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:50,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-01-18 04:12:50,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2022-01-18 04:12:50,382 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:12:50,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:50,382 INFO L85 PathProgramCache]: Analyzing trace with hash -90198083, now seen corresponding path program 93 times [2022-01-18 04:12:50,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:50,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553407869] [2022-01-18 04:12:50,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:50,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:50,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:50,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553407869] [2022-01-18 04:12:50,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553407869] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:50,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807052293] [2022-01-18 04:12:50,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:12:50,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:50,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:50,540 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:12:50,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-01-18 04:12:50,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 04:12:50,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:50,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 04:12:50,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:50,843 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:12:50,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:51,190 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 39 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:12:51,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807052293] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:51,191 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:51,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 10] total 29 [2022-01-18 04:12:51,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176472593] [2022-01-18 04:12:51,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:51,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 04:12:51,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:51,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 04:12:51,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-01-18 04:12:51,202 INFO L87 Difference]: Start difference. First operand 185093 states and 417815 transitions. Second operand has 30 states, 30 states have (on average 3.3333333333333335) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:54,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:54,411 INFO L93 Difference]: Finished difference Result 261505 states and 588740 transitions. [2022-01-18 04:12:54,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 04:12:54,411 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.3333333333333335) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-01-18 04:12:54,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:55,206 INFO L225 Difference]: With dead ends: 261505 [2022-01-18 04:12:55,206 INFO L226 Difference]: Without dead ends: 261363 [2022-01-18 04:12:55,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 62 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1311 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=555, Invalid=4847, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 04:12:55,206 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 409 mSDsluCounter, 2480 mSDsCounter, 0 mSdLazyCounter, 1618 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:55,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 2224 Invalid, 1739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1618 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 04:12:55,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261363 states. [2022-01-18 04:12:59,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261363 to 175416. [2022-01-18 04:12:59,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175416 states, 175415 states have (on average 2.262258073710914) internal successors, (396834), 175415 states have internal predecessors, (396834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:00,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175416 states to 175416 states and 396834 transitions. [2022-01-18 04:13:00,252 INFO L78 Accepts]: Start accepts. Automaton has 175416 states and 396834 transitions. Word has length 42 [2022-01-18 04:13:00,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:00,252 INFO L470 AbstractCegarLoop]: Abstraction has 175416 states and 396834 transitions. [2022-01-18 04:13:00,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.3333333333333335) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:00,253 INFO L276 IsEmpty]: Start isEmpty. Operand 175416 states and 396834 transitions. [2022-01-18 04:13:00,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-18 04:13:00,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:00,324 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:00,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-01-18 04:13:00,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:00,525 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:13:00,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:00,525 INFO L85 PathProgramCache]: Analyzing trace with hash 927830853, now seen corresponding path program 94 times [2022-01-18 04:13:00,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:00,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96835883] [2022-01-18 04:13:00,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:00,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:00,662 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:13:00,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:00,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96835883] [2022-01-18 04:13:00,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96835883] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:00,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941286838] [2022-01-18 04:13:00,663 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:13:00,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:00,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:00,664 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:13:00,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-01-18 04:13:00,683 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:13:00,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:00,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 04:13:00,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:01,038 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 39 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:13:01,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:01,297 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 41 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:13:01,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941286838] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:01,297 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:01,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 11] total 26 [2022-01-18 04:13:01,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974241542] [2022-01-18 04:13:01,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:01,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 04:13:01,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:01,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 04:13:01,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2022-01-18 04:13:01,298 INFO L87 Difference]: Start difference. First operand 175416 states and 396834 transitions. Second operand has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:03,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:03,308 INFO L93 Difference]: Finished difference Result 179081 states and 404765 transitions. [2022-01-18 04:13:03,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 04:13:03,309 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-01-18 04:13:03,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:03,735 INFO L225 Difference]: With dead ends: 179081 [2022-01-18 04:13:03,736 INFO L226 Difference]: Without dead ends: 178977 [2022-01-18 04:13:03,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 64 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=312, Invalid=2138, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 04:13:03,736 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 347 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:03,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 957 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:13:03,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178977 states. [2022-01-18 04:13:06,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178977 to 177054. [2022-01-18 04:13:06,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177054 states, 177053 states have (on average 2.262237860979481) internal successors, (400536), 177053 states have internal predecessors, (400536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:07,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177054 states to 177054 states and 400536 transitions. [2022-01-18 04:13:07,587 INFO L78 Accepts]: Start accepts. Automaton has 177054 states and 400536 transitions. Word has length 42 [2022-01-18 04:13:07,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:07,588 INFO L470 AbstractCegarLoop]: Abstraction has 177054 states and 400536 transitions. [2022-01-18 04:13:07,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:07,588 INFO L276 IsEmpty]: Start isEmpty. Operand 177054 states and 400536 transitions. [2022-01-18 04:13:07,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-18 04:13:07,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:07,662 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:07,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-01-18 04:13:07,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:07,862 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:13:07,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:07,862 INFO L85 PathProgramCache]: Analyzing trace with hash 284724011, now seen corresponding path program 95 times [2022-01-18 04:13:07,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:07,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73682142] [2022-01-18 04:13:07,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:07,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:07,991 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:13:07,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:07,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73682142] [2022-01-18 04:13:07,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73682142] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:07,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888838335] [2022-01-18 04:13:07,991 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:13:07,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:07,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:07,992 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:13:07,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-01-18 04:13:08,011 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 04:13:08,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:08,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 04:13:08,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:08,285 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:13:08,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:08,496 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:13:08,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888838335] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:08,496 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:08,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 24 [2022-01-18 04:13:08,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17887110] [2022-01-18 04:13:08,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:08,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 04:13:08,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:08,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 04:13:08,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2022-01-18 04:13:08,497 INFO L87 Difference]: Start difference. First operand 177054 states and 400536 transitions. Second operand has 25 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:10,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:10,317 INFO L93 Difference]: Finished difference Result 197730 states and 446757 transitions. [2022-01-18 04:13:10,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 04:13:10,320 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-01-18 04:13:10,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:10,859 INFO L225 Difference]: With dead ends: 197730 [2022-01-18 04:13:10,859 INFO L226 Difference]: Without dead ends: 197642 [2022-01-18 04:13:10,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 66 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 04:13:10,860 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 202 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:10,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 961 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:13:11,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197642 states. [2022-01-18 04:13:13,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197642 to 186125. [2022-01-18 04:13:13,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186125 states, 186124 states have (on average 2.2632760955062214) internal successors, (421250), 186124 states have internal predecessors, (421250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:14,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186125 states to 186125 states and 421250 transitions. [2022-01-18 04:13:14,708 INFO L78 Accepts]: Start accepts. Automaton has 186125 states and 421250 transitions. Word has length 42 [2022-01-18 04:13:14,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:14,709 INFO L470 AbstractCegarLoop]: Abstraction has 186125 states and 421250 transitions. [2022-01-18 04:13:14,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:14,709 INFO L276 IsEmpty]: Start isEmpty. Operand 186125 states and 421250 transitions. [2022-01-18 04:13:14,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-18 04:13:14,784 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:14,784 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:14,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-01-18 04:13:14,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2022-01-18 04:13:14,984 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:13:14,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:14,985 INFO L85 PathProgramCache]: Analyzing trace with hash -475062237, now seen corresponding path program 96 times [2022-01-18 04:13:14,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:14,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979589377] [2022-01-18 04:13:14,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:14,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:15,114 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:13:15,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:15,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979589377] [2022-01-18 04:13:15,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979589377] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:15,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734142706] [2022-01-18 04:13:15,115 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:13:15,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:15,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:15,116 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:13:15,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-01-18 04:13:15,135 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 04:13:15,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:15,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 04:13:15,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:15,419 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:13:15,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:15,631 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:13:15,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734142706] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:15,632 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:15,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 11] total 24 [2022-01-18 04:13:15,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399579311] [2022-01-18 04:13:15,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:15,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 04:13:15,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:15,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 04:13:15,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2022-01-18 04:13:15,633 INFO L87 Difference]: Start difference. First operand 186125 states and 421250 transitions. Second operand has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:17,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:17,466 INFO L93 Difference]: Finished difference Result 203761 states and 460278 transitions. [2022-01-18 04:13:17,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 04:13:17,466 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-01-18 04:13:17,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:18,028 INFO L225 Difference]: With dead ends: 203761 [2022-01-18 04:13:18,028 INFO L226 Difference]: Without dead ends: 203683 [2022-01-18 04:13:18,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 65 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=177, Invalid=1083, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 04:13:18,028 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 300 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:18,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 741 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:13:18,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203683 states. [2022-01-18 04:13:21,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203683 to 191634. [2022-01-18 04:13:21,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191634 states, 191633 states have (on average 2.263201014439058) internal successors, (433704), 191633 states have internal predecessors, (433704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:22,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191634 states to 191634 states and 433704 transitions. [2022-01-18 04:13:22,077 INFO L78 Accepts]: Start accepts. Automaton has 191634 states and 433704 transitions. Word has length 42 [2022-01-18 04:13:22,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:22,077 INFO L470 AbstractCegarLoop]: Abstraction has 191634 states and 433704 transitions. [2022-01-18 04:13:22,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:22,077 INFO L276 IsEmpty]: Start isEmpty. Operand 191634 states and 433704 transitions. [2022-01-18 04:13:22,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-18 04:13:22,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:22,166 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:22,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2022-01-18 04:13:22,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:22,366 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 04:13:22,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:22,367 INFO L85 PathProgramCache]: Analyzing trace with hash 727974827, now seen corresponding path program 97 times [2022-01-18 04:13:22,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:22,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480966501] [2022-01-18 04:13:22,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:22,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:22,503 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:13:22,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:22,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480966501] [2022-01-18 04:13:22,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480966501] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:22,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273374923] [2022-01-18 04:13:22,504 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:13:22,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:22,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:22,504 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:13:22,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-01-18 04:13:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:22,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 04:13:22,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:22,847 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:13:22,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:23,055 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 41 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:13:23,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273374923] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:23,055 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:23,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 11] total 24 [2022-01-18 04:13:23,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940859768] [2022-01-18 04:13:23,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:23,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 04:13:23,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:23,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 04:13:23,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2022-01-18 04:13:23,056 INFO L87 Difference]: Start difference. First operand 191634 states and 433704 transitions. Second operand has 25 states, 25 states have (on average 3.16) internal successors, (79), 24 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-01-18 04:13:23,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 04:13:23,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 65 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=175, Invalid=1157, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 04:13:23,710 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 258 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:23,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 652 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:13:23,711 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-01-18 04:13:23,718 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 04:13:23,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-01-18 04:13:23,739 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 04:13:23,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:23,927 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (191634states) and FLOYD_HOARE automaton (currently 30 states, 25 states before enhancement),while ReachableStatesComputation was computing reachable states (62428 states constructed, input type IntersectNwa). [2022-01-18 04:13:23,928 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 04:13:23,928 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 04:13:23,930 INFO L732 BasicCegarLoop]: Path program histogram: [97, 9, 2, 1, 1] [2022-01-18 04:13:23,931 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 04:13:23,931 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 04:13:23,933 INFO L202 PluginConnector]: Adding new model clever.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 04:13:23 BasicIcfg [2022-01-18 04:13:23,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 04:13:23,933 INFO L158 Benchmark]: Toolchain (without parser) took 691050.30ms. Allocated memory was 350.2MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 311.9MB in the beginning and 9.6GB in the end (delta: -9.3GB). Peak memory consumption was 6.4GB. Max. memory is 16.0GB. [2022-01-18 04:13:23,933 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 350.2MB. Free memory is still 313.0MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 04:13:23,933 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.74ms. Allocated memory is still 350.2MB. Free memory was 311.9MB in the beginning and 310.4MB in the end (delta: 1.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2022-01-18 04:13:23,933 INFO L158 Benchmark]: Boogie Preprocessor took 12.96ms. Allocated memory is still 350.2MB. Free memory was 310.4MB in the beginning and 309.4MB in the end (delta: 965.7kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 04:13:23,933 INFO L158 Benchmark]: RCFGBuilder took 212.82ms. Allocated memory is still 350.2MB. Free memory was 309.3MB in the beginning and 300.6MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. [2022-01-18 04:13:23,933 INFO L158 Benchmark]: TraceAbstraction took 690800.46ms. Allocated memory was 350.2MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 300.1MB in the beginning and 9.6GB in the end (delta: -9.3GB). Peak memory consumption was 6.4GB. Max. memory is 16.0GB. [2022-01-18 04:13:23,933 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 0.10ms. Allocated memory is still 350.2MB. Free memory is still 313.0MB. There was no memory consumed. Max. memory is 16.0GB. * Boogie Procedure Inliner took 18.74ms. Allocated memory is still 350.2MB. Free memory was 311.9MB in the beginning and 310.4MB in the end (delta: 1.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 12.96ms. Allocated memory is still 350.2MB. Free memory was 310.4MB in the beginning and 309.4MB in the end (delta: 965.7kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 212.82ms. Allocated memory is still 350.2MB. Free memory was 309.3MB in the beginning and 300.6MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. * TraceAbstraction took 690800.46ms. Allocated memory was 350.2MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 300.1MB in the beginning and 9.6GB in the end (delta: -9.3GB). Peak memory consumption was 6.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (191634states) and FLOYD_HOARE automaton (currently 30 states, 25 states before enhancement),while ReachableStatesComputation was computing reachable states (62428 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 44]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (191634states) and FLOYD_HOARE automaton (currently 30 states, 25 states before enhancement),while ReachableStatesComputation was computing reachable states (62428 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 44]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (191634states) and FLOYD_HOARE automaton (currently 30 states, 25 states before enhancement),while ReachableStatesComputation was computing reachable states (62428 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 39 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 690.7s, OverallIterations: 110, TraceHistogramMax: 5, PathProgramHistogramMax: 97, EmptinessCheckTime: 5.9s, AutomataDifference: 261.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31980 SdHoareTripleChecker+Valid, 45.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31980 mSDsluCounter, 127940 SdHoareTripleChecker+Invalid, 37.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 139232 mSDsCounter, 7515 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 111781 IncrementalHoareTripleChecker+Invalid, 119296 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7515 mSolverCounterUnsat, 9337 mSDtfsCounter, 111781 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11473 GetRequests, 5902 SyntacticMatches, 413 SemanticMatches, 5158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115474 ImplicationChecksByTransitivity, 108.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=357309occurred in iteration=91, InterpolantAutomatonStates: 4553, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 337.4s AutomataMinimizationTime, 109 MinimizatonAttempts, 1373151 StatesRemovedByMinimization, 109 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 60.6s InterpolantComputationTime, 7470 NumberOfCodeBlocks, 7452 NumberOfCodeBlocksAsserted, 432 NumberOfCheckSat, 10858 ConstructedInterpolants, 0 QuantifiedInterpolants, 118340 SizeOfPredicates, 510 NumberOfNonLiveVariables, 6965 ConjunctsInSsa, 1754 ConjunctsInUnsatCore, 324 InterpolantComputations, 3 PerfectInterpolantSequences, 2264/9351 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown