/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp3x3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 17:23:22,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 17:23:22,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 17:23:22,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-01 17:23:22,273 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 [2022-03-01 17:23:22,290 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 17:23:22,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 17:23:22,291 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 17:23:22,291 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 17:23:22,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 17:23:22,292 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 17:23:22,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 17:23:22,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 17:23:22,292 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 17:23:22,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 17:23:22,293 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 17:23:22,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 17:23:22,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 17:23:22,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 17:23:22,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 17:23:22,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 17:23:22,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 17:23:22,294 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 17:23:22,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 17:23:22,294 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 17:23:22,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 17:23:22,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 17:23:22,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 17:23:22,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 17:23:22,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 17:23:22,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 17:23:22,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 17:23:22,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 17:23:22,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 17:23:22,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 17:23:22,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 17:23:22,296 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 17:23:22,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 17:23:22,296 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 17:23:22,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 17:23:22,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 17:23:22,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 17:23:22,462 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-01 17:23:22,466 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-01 17:23:22,467 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp3x3.wvr.bpl [2022-03-01 17:23:22,468 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp3x3.wvr.bpl' [2022-03-01 17:23:22,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 17:23:22,484 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-01 17:23:22,489 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 17:23:22,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 17:23:22,490 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 17:23:22,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:23:22" (1/1) ... [2022-03-01 17:23:22,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:23:22" (1/1) ... [2022-03-01 17:23:22,508 INFO L137 Inliner]: procedures = 7, calls = 6, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-01 17:23:22,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 17:23:22,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 17:23:22,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 17:23:22,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 17:23:22,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:23:22" (1/1) ... [2022-03-01 17:23:22,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:23:22" (1/1) ... [2022-03-01 17:23:22,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:23:22" (1/1) ... [2022-03-01 17:23:22,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:23:22" (1/1) ... [2022-03-01 17:23:22,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:23:22" (1/1) ... [2022-03-01 17:23:22,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:23:22" (1/1) ... [2022-03-01 17:23:22,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:23:22" (1/1) ... [2022-03-01 17:23:22,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 17:23:22,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 17:23:22,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 17:23:22,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 17:23:22,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:23:22" (1/1) ... [2022-03-01 17:23:22,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 17:23:22,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:23:22,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-01 17:23:22,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-01 17:23:22,593 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-01 17:23:22,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-01 17:23:22,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-01 17:23:22,593 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-01 17:23:22,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-01 17:23:22,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-01 17:23:22,594 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-01 17:23:22,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 17:23:22,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 17:23:22,594 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-03-01 17:23:22,594 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-01 17:23:22,594 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-01 17:23:22,594 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2022-03-01 17:23:22,594 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-03-01 17:23:22,594 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-03-01 17:23:22,594 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2022-03-01 17:23:22,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-03-01 17:23:22,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-03-01 17:23:22,595 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2022-03-01 17:23:22,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-03-01 17:23:22,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-03-01 17:23:22,596 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 17:23:22,628 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 17:23:22,629 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 17:23:22,722 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 17:23:22,727 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 17:23:22,727 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-01 17:23:22,728 INFO L202 PluginConnector]: Adding new model exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 05:23:22 BoogieIcfgContainer [2022-03-01 17:23:22,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 17:23:22,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 17:23:22,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 17:23:22,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 17:23:22,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:23:22" (1/2) ... [2022-03-01 17:23:22,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9b8f3d and model type exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 05:23:22, skipping insertion in model container [2022-03-01 17:23:22,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp3x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 05:23:22" (2/2) ... [2022-03-01 17:23:22,734 INFO L111 eAbstractionObserver]: Analyzing ICFG exp3x3.wvr.bpl [2022-03-01 17:23:22,737 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 17:23:22,737 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 17:23:22,737 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 17:23:22,737 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 17:23:22,774 INFO L148 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-03-01 17:23:22,803 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 17:23:22,808 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, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-01 17:23:22,808 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-03-01 17:23:22,815 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 47 transitions, 142 flow [2022-03-01 17:23:23,288 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 6829 states, 6828 states have (on average 5.865992970123023) internal successors, (40053), 6828 states have internal predecessors, (40053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:23,323 INFO L276 IsEmpty]: Start isEmpty. Operand has 6829 states, 6828 states have (on average 5.865992970123023) internal successors, (40053), 6828 states have internal predecessors, (40053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:23,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-01 17:23:23,373 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:23,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:23,375 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:23:23,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:23,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1106088347, now seen corresponding path program 1 times [2022-03-01 17:23:23,387 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:23,389 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582593855] [2022-03-01 17:23:23,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:23,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:23,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:23,601 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:23,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582593855] [2022-03-01 17:23:23,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582593855] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:23:23,601 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:23:23,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-01 17:23:23,603 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561600208] [2022-03-01 17:23:23,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:23:23,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 17:23:23,606 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:23,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 17:23:23,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:23:23,648 INFO L87 Difference]: Start difference. First operand has 6829 states, 6828 states have (on average 5.865992970123023) internal successors, (40053), 6828 states have internal predecessors, (40053), 0 states have call successors, (0), 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 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:24,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:24,033 INFO L93 Difference]: Finished difference Result 13654 states and 80102 transitions. [2022-03-01 17:23:24,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 17:23:24,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2022-03-01 17:23:24,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:24,247 INFO L225 Difference]: With dead ends: 13654 [2022-03-01 17:23:24,248 INFO L226 Difference]: Without dead ends: 13527 [2022-03-01 17:23:24,249 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 [2022-03-01 17:23:24,251 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:24,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 16 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:23:24,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13527 states. [2022-03-01 17:23:25,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13527 to 8158. [2022-03-01 17:23:25,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8158 states, 8157 states have (on average 5.851538555841609) internal successors, (47731), 8157 states have internal predecessors, (47731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:25,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8158 states to 8158 states and 47731 transitions. [2022-03-01 17:23:25,086 INFO L78 Accepts]: Start accepts. Automaton has 8158 states and 47731 transitions. Word has length 27 [2022-03-01 17:23:25,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:25,088 INFO L470 AbstractCegarLoop]: Abstraction has 8158 states and 47731 transitions. [2022-03-01 17:23:25,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:25,088 INFO L276 IsEmpty]: Start isEmpty. Operand 8158 states and 47731 transitions. [2022-03-01 17:23:25,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:23:25,118 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:25,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:25,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 17:23:25,119 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:23:25,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:25,121 INFO L85 PathProgramCache]: Analyzing trace with hash -764437085, now seen corresponding path program 1 times [2022-03-01 17:23:25,122 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:25,122 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157697734] [2022-03-01 17:23:25,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:25,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:25,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:25,213 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:25,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157697734] [2022-03-01 17:23:25,214 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157697734] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:23:25,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902263138] [2022-03-01 17:23:25,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:25,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:25,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:23:25,216 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) [2022-03-01 17:23:25,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-01 17:23:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:25,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-01 17:23:25,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:23:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:25,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:23:25,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:25,488 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902263138] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:23:25,489 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:23:25,489 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2022-03-01 17:23:25,490 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755253373] [2022-03-01 17:23:25,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:23:25,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 17:23:25,491 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:25,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 17:23:25,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-01 17:23:25,492 INFO L87 Difference]: Start difference. First operand 8158 states and 47731 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) [2022-03-01 17:23:26,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:26,051 INFO L93 Difference]: Finished difference Result 21114 states and 121111 transitions. [2022-03-01 17:23:26,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 17:23:26,052 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 29 [2022-03-01 17:23:26,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:26,253 INFO L225 Difference]: With dead ends: 21114 [2022-03-01 17:23:26,253 INFO L226 Difference]: Without dead ends: 21114 [2022-03-01 17:23:26,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:23:26,255 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 157 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:26,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 93 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:23:26,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21114 states. [2022-03-01 17:23:26,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21114 to 10411. [2022-03-01 17:23:26,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10411 states, 10410 states have (on average 5.94447646493756) internal successors, (61882), 10410 states have internal predecessors, (61882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:26,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10411 states to 10411 states and 61882 transitions. [2022-03-01 17:23:26,801 INFO L78 Accepts]: Start accepts. Automaton has 10411 states and 61882 transitions. Word has length 29 [2022-03-01 17:23:26,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:26,801 INFO L470 AbstractCegarLoop]: Abstraction has 10411 states and 61882 transitions. [2022-03-01 17:23:26,801 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) [2022-03-01 17:23:26,801 INFO L276 IsEmpty]: Start isEmpty. Operand 10411 states and 61882 transitions. [2022-03-01 17:23:27,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:23:27,022 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:27,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:27,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-01 17:23:27,231 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 [2022-03-01 17:23:27,232 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:23:27,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:27,232 INFO L85 PathProgramCache]: Analyzing trace with hash -327915353, now seen corresponding path program 1 times [2022-03-01 17:23:27,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:27,233 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823216558] [2022-03-01 17:23:27,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:27,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:27,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:27,279 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:27,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823216558] [2022-03-01 17:23:27,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823216558] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:23:27,281 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:23:27,281 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 17:23:27,282 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964042121] [2022-03-01 17:23:27,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:23:27,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-01 17:23:27,283 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:27,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-01 17:23:27,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-01 17:23:27,284 INFO L87 Difference]: Start difference. First operand 10411 states and 61882 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:27,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:27,579 INFO L93 Difference]: Finished difference Result 14973 states and 85568 transitions. [2022-03-01 17:23:27,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-01 17:23:27,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-03-01 17:23:27,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:27,660 INFO L225 Difference]: With dead ends: 14973 [2022-03-01 17:23:27,660 INFO L226 Difference]: Without dead ends: 14893 [2022-03-01 17:23:27,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-01 17:23:27,661 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 64 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:27,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 55 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:23:27,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14893 states. [2022-03-01 17:23:28,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14893 to 11995. [2022-03-01 17:23:28,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11995 states, 11994 states have (on average 5.837335334333834) internal successors, (70013), 11994 states have internal predecessors, (70013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:28,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11995 states to 11995 states and 70013 transitions. [2022-03-01 17:23:28,268 INFO L78 Accepts]: Start accepts. Automaton has 11995 states and 70013 transitions. Word has length 29 [2022-03-01 17:23:28,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:28,268 INFO L470 AbstractCegarLoop]: Abstraction has 11995 states and 70013 transitions. [2022-03-01 17:23:28,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:28,269 INFO L276 IsEmpty]: Start isEmpty. Operand 11995 states and 70013 transitions. [2022-03-01 17:23:28,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:23:28,305 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:28,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:28,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-01 17:23:28,306 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:23:28,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:28,306 INFO L85 PathProgramCache]: Analyzing trace with hash 936602023, now seen corresponding path program 1 times [2022-03-01 17:23:28,306 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:28,306 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458882419] [2022-03-01 17:23:28,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:28,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:28,341 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:28,341 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458882419] [2022-03-01 17:23:28,341 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458882419] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:23:28,341 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000323319] [2022-03-01 17:23:28,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:28,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:28,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:23:28,342 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) [2022-03-01 17:23:28,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-01 17:23:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:28,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-01 17:23:28,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:23:28,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:28,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:23:28,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:28,506 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000323319] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:23:28,506 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:23:28,506 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2022-03-01 17:23:28,506 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924520937] [2022-03-01 17:23:28,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:23:28,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 17:23:28,507 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:28,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 17:23:28,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-01 17:23:28,507 INFO L87 Difference]: Start difference. First operand 11995 states and 70013 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:28,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:28,985 INFO L93 Difference]: Finished difference Result 31953 states and 183348 transitions. [2022-03-01 17:23:28,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 17:23:28,986 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 [2022-03-01 17:23:28,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:29,210 INFO L225 Difference]: With dead ends: 31953 [2022-03-01 17:23:29,210 INFO L226 Difference]: Without dead ends: 31953 [2022-03-01 17:23:29,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:23:29,211 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 113 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:29,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 94 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:23:29,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31953 states. [2022-03-01 17:23:29,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31953 to 15889. [2022-03-01 17:23:30,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15889 states, 15888 states have (on average 5.952353977844915) internal successors, (94571), 15888 states have internal predecessors, (94571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:30,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15889 states to 15889 states and 94571 transitions. [2022-03-01 17:23:30,118 INFO L78 Accepts]: Start accepts. Automaton has 15889 states and 94571 transitions. Word has length 29 [2022-03-01 17:23:30,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:30,119 INFO L470 AbstractCegarLoop]: Abstraction has 15889 states and 94571 transitions. [2022-03-01 17:23:30,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:30,119 INFO L276 IsEmpty]: Start isEmpty. Operand 15889 states and 94571 transitions. [2022-03-01 17:23:30,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:23:30,347 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:30,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:30,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-01 17:23:30,555 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 [2022-03-01 17:23:30,556 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:23:30,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:30,556 INFO L85 PathProgramCache]: Analyzing trace with hash 794550245, now seen corresponding path program 1 times [2022-03-01 17:23:30,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:30,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082043014] [2022-03-01 17:23:30,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:30,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:30,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:30,597 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:30,597 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082043014] [2022-03-01 17:23:30,598 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082043014] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:23:30,598 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494404921] [2022-03-01 17:23:30,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:30,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:30,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:23:30,599 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) [2022-03-01 17:23:30,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-01 17:23:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:30,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-01 17:23:30,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:23:30,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:30,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:23:30,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:30,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494404921] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:23:30,731 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:23:30,731 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2022-03-01 17:23:30,731 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263642806] [2022-03-01 17:23:30,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:23:30,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 17:23:30,732 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:30,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 17:23:30,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-01 17:23:30,733 INFO L87 Difference]: Start difference. First operand 15889 states and 94571 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 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) [2022-03-01 17:23:31,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:31,351 INFO L93 Difference]: Finished difference Result 40052 states and 235429 transitions. [2022-03-01 17:23:31,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 17:23:31,351 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 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 [2022-03-01 17:23:31,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:31,613 INFO L225 Difference]: With dead ends: 40052 [2022-03-01 17:23:31,613 INFO L226 Difference]: Without dead ends: 40052 [2022-03-01 17:23:31,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:23:31,614 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 97 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:31,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 93 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:23:31,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40052 states. [2022-03-01 17:23:32,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40052 to 21804. [2022-03-01 17:23:32,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21804 states, 21803 states have (on average 6.063110581112691) internal successors, (132194), 21803 states have internal predecessors, (132194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:32,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21804 states to 21804 states and 132194 transitions. [2022-03-01 17:23:32,834 INFO L78 Accepts]: Start accepts. Automaton has 21804 states and 132194 transitions. Word has length 29 [2022-03-01 17:23:32,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:32,834 INFO L470 AbstractCegarLoop]: Abstraction has 21804 states and 132194 transitions. [2022-03-01 17:23:32,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 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) [2022-03-01 17:23:32,834 INFO L276 IsEmpty]: Start isEmpty. Operand 21804 states and 132194 transitions. [2022-03-01 17:23:32,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:23:32,912 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:32,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:32,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-01 17:23:33,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:33,113 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:23:33,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:33,114 INFO L85 PathProgramCache]: Analyzing trace with hash -715559483, now seen corresponding path program 1 times [2022-03-01 17:23:33,114 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:33,114 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571551304] [2022-03-01 17:23:33,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:33,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:33,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:33,152 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:33,152 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571551304] [2022-03-01 17:23:33,153 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571551304] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:23:33,153 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:23:33,153 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 17:23:33,153 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783597723] [2022-03-01 17:23:33,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:23:33,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-01 17:23:33,153 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:33,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-01 17:23:33,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-01 17:23:33,154 INFO L87 Difference]: Start difference. First operand 21804 states and 132194 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:33,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:33,676 INFO L93 Difference]: Finished difference Result 29811 states and 175284 transitions. [2022-03-01 17:23:33,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-01 17:23:33,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-03-01 17:23:33,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:33,853 INFO L225 Difference]: With dead ends: 29811 [2022-03-01 17:23:33,853 INFO L226 Difference]: Without dead ends: 29542 [2022-03-01 17:23:33,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-01 17:23:33,854 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 43 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:33,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 58 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:23:33,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29542 states. [2022-03-01 17:23:34,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29542 to 24475. [2022-03-01 17:23:34,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24475 states, 24474 states have (on average 5.988845305221868) internal successors, (146571), 24474 states have internal predecessors, (146571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:34,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24475 states to 24475 states and 146571 transitions. [2022-03-01 17:23:34,946 INFO L78 Accepts]: Start accepts. Automaton has 24475 states and 146571 transitions. Word has length 29 [2022-03-01 17:23:34,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:34,946 INFO L470 AbstractCegarLoop]: Abstraction has 24475 states and 146571 transitions. [2022-03-01 17:23:34,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:34,947 INFO L276 IsEmpty]: Start isEmpty. Operand 24475 states and 146571 transitions. [2022-03-01 17:23:35,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:23:35,017 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:35,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:35,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-01 17:23:35,018 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:23:35,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:35,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1770833255, now seen corresponding path program 1 times [2022-03-01 17:23:35,018 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:35,018 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295860968] [2022-03-01 17:23:35,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:35,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:35,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:35,056 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:35,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295860968] [2022-03-01 17:23:35,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295860968] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:23:35,056 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:23:35,056 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 17:23:35,056 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486865267] [2022-03-01 17:23:35,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:23:35,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-01 17:23:35,057 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:35,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-01 17:23:35,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-01 17:23:35,057 INFO L87 Difference]: Start difference. First operand 24475 states and 146571 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:35,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:35,594 INFO L93 Difference]: Finished difference Result 35114 states and 202380 transitions. [2022-03-01 17:23:35,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-01 17:23:35,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-03-01 17:23:35,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:35,777 INFO L225 Difference]: With dead ends: 35114 [2022-03-01 17:23:35,778 INFO L226 Difference]: Without dead ends: 34658 [2022-03-01 17:23:35,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-01 17:23:35,778 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 40 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:35,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 58 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:23:35,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34658 states. [2022-03-01 17:23:36,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34658 to 28375. [2022-03-01 17:23:36,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28375 states, 28374 states have (on average 5.901212377528723) internal successors, (167441), 28374 states have internal predecessors, (167441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:37,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28375 states to 28375 states and 167441 transitions. [2022-03-01 17:23:37,028 INFO L78 Accepts]: Start accepts. Automaton has 28375 states and 167441 transitions. Word has length 29 [2022-03-01 17:23:37,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:37,029 INFO L470 AbstractCegarLoop]: Abstraction has 28375 states and 167441 transitions. [2022-03-01 17:23:37,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:37,029 INFO L276 IsEmpty]: Start isEmpty. Operand 28375 states and 167441 transitions. [2022-03-01 17:23:37,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:23:37,120 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:37,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:37,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-01 17:23:37,120 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:23:37,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:37,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1398612613, now seen corresponding path program 2 times [2022-03-01 17:23:37,121 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:37,121 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508159081] [2022-03-01 17:23:37,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:37,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:37,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:37,171 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:37,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508159081] [2022-03-01 17:23:37,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508159081] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:23:37,171 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:23:37,171 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-01 17:23:37,171 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816353113] [2022-03-01 17:23:37,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:23:37,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 17:23:37,172 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:37,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 17:23:37,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-01 17:23:37,172 INFO L87 Difference]: Start difference. First operand 28375 states and 167441 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:37,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:37,727 INFO L93 Difference]: Finished difference Result 37576 states and 218897 transitions. [2022-03-01 17:23:37,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 17:23:37,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-03-01 17:23:37,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:37,925 INFO L225 Difference]: With dead ends: 37576 [2022-03-01 17:23:37,925 INFO L226 Difference]: Without dead ends: 37576 [2022-03-01 17:23:37,925 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 [2022-03-01 17:23:37,926 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 89 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:37,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 68 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:23:38,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37576 states. [2022-03-01 17:23:38,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37576 to 30967. [2022-03-01 17:23:39,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30967 states, 30966 states have (on average 5.905703029128722) internal successors, (182876), 30966 states have internal predecessors, (182876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:39,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30967 states to 30967 states and 182876 transitions. [2022-03-01 17:23:39,455 INFO L78 Accepts]: Start accepts. Automaton has 30967 states and 182876 transitions. Word has length 29 [2022-03-01 17:23:39,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:39,455 INFO L470 AbstractCegarLoop]: Abstraction has 30967 states and 182876 transitions. [2022-03-01 17:23:39,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:39,456 INFO L276 IsEmpty]: Start isEmpty. Operand 30967 states and 182876 transitions. [2022-03-01 17:23:39,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:23:39,571 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:39,572 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:39,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-01 17:23:39,572 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:23:39,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:39,573 INFO L85 PathProgramCache]: Analyzing trace with hash -627904633, now seen corresponding path program 2 times [2022-03-01 17:23:39,573 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:39,573 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33047294] [2022-03-01 17:23:39,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:39,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:39,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:39,642 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:39,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33047294] [2022-03-01 17:23:39,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33047294] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:23:39,643 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:23:39,643 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-01 17:23:39,643 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282372930] [2022-03-01 17:23:39,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:23:39,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 17:23:39,643 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:39,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 17:23:39,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-01 17:23:39,644 INFO L87 Difference]: Start difference. First operand 30967 states and 182876 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:40,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:40,410 INFO L93 Difference]: Finished difference Result 42542 states and 247007 transitions. [2022-03-01 17:23:40,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 17:23:40,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-03-01 17:23:40,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:40,649 INFO L225 Difference]: With dead ends: 42542 [2022-03-01 17:23:40,649 INFO L226 Difference]: Without dead ends: 42542 [2022-03-01 17:23:40,649 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 [2022-03-01 17:23:40,650 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 66 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:40,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 80 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:23:40,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42542 states. [2022-03-01 17:23:41,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42542 to 34465. [2022-03-01 17:23:41,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34465 states, 34464 states have (on average 5.9103122098421546) internal successors, (203693), 34464 states have internal predecessors, (203693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:42,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34465 states to 34465 states and 203693 transitions. [2022-03-01 17:23:42,113 INFO L78 Accepts]: Start accepts. Automaton has 34465 states and 203693 transitions. Word has length 29 [2022-03-01 17:23:42,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:42,113 INFO L470 AbstractCegarLoop]: Abstraction has 34465 states and 203693 transitions. [2022-03-01 17:23:42,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:42,113 INFO L276 IsEmpty]: Start isEmpty. Operand 34465 states and 203693 transitions. [2022-03-01 17:23:42,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:23:42,227 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:42,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:42,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-01 17:23:42,228 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:23:42,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:42,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1413996949, now seen corresponding path program 2 times [2022-03-01 17:23:42,228 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:42,228 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480009728] [2022-03-01 17:23:42,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:42,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:42,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:42,253 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:42,253 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480009728] [2022-03-01 17:23:42,253 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480009728] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:23:42,253 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:23:42,253 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-01 17:23:42,253 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516123867] [2022-03-01 17:23:42,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:23:42,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 17:23:42,254 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:42,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 17:23:42,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-01 17:23:42,254 INFO L87 Difference]: Start difference. First operand 34465 states and 203693 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:42,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:42,947 INFO L93 Difference]: Finished difference Result 47735 states and 276681 transitions. [2022-03-01 17:23:42,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 17:23:42,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-03-01 17:23:42,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:43,423 INFO L225 Difference]: With dead ends: 47735 [2022-03-01 17:23:43,423 INFO L226 Difference]: Without dead ends: 47735 [2022-03-01 17:23:43,423 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 [2022-03-01 17:23:43,424 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 101 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:43,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 71 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:23:43,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47735 states. [2022-03-01 17:23:44,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47735 to 37708. [2022-03-01 17:23:44,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37708 states, 37707 states have (on average 5.9143660328321) internal successors, (223013), 37707 states have internal predecessors, (223013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:45,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37708 states to 37708 states and 223013 transitions. [2022-03-01 17:23:45,030 INFO L78 Accepts]: Start accepts. Automaton has 37708 states and 223013 transitions. Word has length 29 [2022-03-01 17:23:45,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:45,030 INFO L470 AbstractCegarLoop]: Abstraction has 37708 states and 223013 transitions. [2022-03-01 17:23:45,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:45,030 INFO L276 IsEmpty]: Start isEmpty. Operand 37708 states and 223013 transitions. [2022-03-01 17:23:45,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:23:45,159 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:45,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:45,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-01 17:23:45,159 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:23:45,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:45,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1581432933, now seen corresponding path program 1 times [2022-03-01 17:23:45,159 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:45,160 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405481025] [2022-03-01 17:23:45,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:45,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:45,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:45,224 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:45,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405481025] [2022-03-01 17:23:45,224 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405481025] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:23:45,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330151486] [2022-03-01 17:23:45,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:45,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:45,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:23:45,225 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) [2022-03-01 17:23:45,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-01 17:23:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:45,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-01 17:23:45,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:23:45,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:45,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:23:45,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:45,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330151486] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:23:45,747 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:23:45,747 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2022-03-01 17:23:45,747 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643065625] [2022-03-01 17:23:45,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:23:45,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 17:23:45,748 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:45,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 17:23:45,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-01 17:23:45,748 INFO L87 Difference]: Start difference. First operand 37708 states and 223013 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 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) [2022-03-01 17:23:46,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:46,553 INFO L93 Difference]: Finished difference Result 48610 states and 280421 transitions. [2022-03-01 17:23:46,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 17:23:46,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 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 31 [2022-03-01 17:23:46,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:47,010 INFO L225 Difference]: With dead ends: 48610 [2022-03-01 17:23:47,010 INFO L226 Difference]: Without dead ends: 48062 [2022-03-01 17:23:47,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-01 17:23:47,011 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 43 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:47,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 58 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:23:47,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48062 states. [2022-03-01 17:23:48,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48062 to 40315. [2022-03-01 17:23:48,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40315 states, 40314 states have (on average 5.896785235898199) internal successors, (237723), 40314 states have internal predecessors, (237723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:48,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40315 states to 40315 states and 237723 transitions. [2022-03-01 17:23:48,658 INFO L78 Accepts]: Start accepts. Automaton has 40315 states and 237723 transitions. Word has length 31 [2022-03-01 17:23:48,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:48,659 INFO L470 AbstractCegarLoop]: Abstraction has 40315 states and 237723 transitions. [2022-03-01 17:23:48,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 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) [2022-03-01 17:23:48,659 INFO L276 IsEmpty]: Start isEmpty. Operand 40315 states and 237723 transitions. [2022-03-01 17:23:48,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:23:48,785 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:48,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:48,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-01 17:23:48,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:48,986 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:23:48,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:48,986 INFO L85 PathProgramCache]: Analyzing trace with hash -6737385, now seen corresponding path program 2 times [2022-03-01 17:23:48,987 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:48,987 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055972648] [2022-03-01 17:23:48,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:48,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:49,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:23:49,039 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:49,039 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055972648] [2022-03-01 17:23:49,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055972648] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:23:49,039 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:23:49,039 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 17:23:49,039 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721820446] [2022-03-01 17:23:49,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:23:49,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-01 17:23:49,039 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:49,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-01 17:23:49,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-01 17:23:49,040 INFO L87 Difference]: Start difference. First operand 40315 states and 237723 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:49,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:49,868 INFO L93 Difference]: Finished difference Result 50404 states and 290958 transitions. [2022-03-01 17:23:49,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-01 17:23:49,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2022-03-01 17:23:49,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:50,416 INFO L225 Difference]: With dead ends: 50404 [2022-03-01 17:23:50,416 INFO L226 Difference]: Without dead ends: 49856 [2022-03-01 17:23:50,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-01 17:23:50,417 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 34 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:50,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 36 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:23:50,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49856 states. [2022-03-01 17:23:51,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49856 to 42372. [2022-03-01 17:23:51,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42372 states, 42371 states have (on average 5.882112765806802) internal successors, (249231), 42371 states have internal predecessors, (249231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:52,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42372 states to 42372 states and 249231 transitions. [2022-03-01 17:23:52,124 INFO L78 Accepts]: Start accepts. Automaton has 42372 states and 249231 transitions. Word has length 31 [2022-03-01 17:23:52,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:52,124 INFO L470 AbstractCegarLoop]: Abstraction has 42372 states and 249231 transitions. [2022-03-01 17:23:52,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:52,124 INFO L276 IsEmpty]: Start isEmpty. Operand 42372 states and 249231 transitions. [2022-03-01 17:23:52,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:23:52,266 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:52,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:52,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-01 17:23:52,266 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:23:52,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:52,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1996224553, now seen corresponding path program 1 times [2022-03-01 17:23:52,266 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:52,267 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956125240] [2022-03-01 17:23:52,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:52,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:52,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:52,310 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:52,310 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956125240] [2022-03-01 17:23:52,310 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956125240] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:23:52,310 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057644908] [2022-03-01 17:23:52,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:52,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:23:52,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:23:52,312 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) [2022-03-01 17:23:52,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-01 17:23:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:52,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-01 17:23:52,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:23:52,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:52,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:23:52,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:23:52,759 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057644908] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:23:52,760 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:23:52,760 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2022-03-01 17:23:52,760 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282700948] [2022-03-01 17:23:52,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:23:52,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 17:23:52,760 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:52,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 17:23:52,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-01 17:23:52,761 INFO L87 Difference]: Start difference. First operand 42372 states and 249231 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:53,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:53,619 INFO L93 Difference]: Finished difference Result 53113 states and 305911 transitions. [2022-03-01 17:23:53,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 17:23:53,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 [2022-03-01 17:23:53,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:54,132 INFO L225 Difference]: With dead ends: 53113 [2022-03-01 17:23:54,132 INFO L226 Difference]: Without dead ends: 52637 [2022-03-01 17:23:54,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-01 17:23:54,133 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 52 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:54,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 55 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:23:54,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52637 states. [2022-03-01 17:23:55,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52637 to 45439. [2022-03-01 17:23:55,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45439 states, 45438 states have (on average 5.865487037281571) internal successors, (266516), 45438 states have internal predecessors, (266516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:55,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45439 states to 45439 states and 266516 transitions. [2022-03-01 17:23:55,930 INFO L78 Accepts]: Start accepts. Automaton has 45439 states and 266516 transitions. Word has length 31 [2022-03-01 17:23:55,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:23:55,930 INFO L470 AbstractCegarLoop]: Abstraction has 45439 states and 266516 transitions. [2022-03-01 17:23:55,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:55,930 INFO L276 IsEmpty]: Start isEmpty. Operand 45439 states and 266516 transitions. [2022-03-01 17:23:56,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:23:56,433 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:23:56,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:23:56,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-01 17:23:56,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-01 17:23:56,649 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:23:56,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:23:56,649 INFO L85 PathProgramCache]: Analyzing trace with hash 210097239, now seen corresponding path program 2 times [2022-03-01 17:23:56,649 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:23:56,649 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366185087] [2022-03-01 17:23:56,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:23:56,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:23:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:23:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:23:56,709 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:23:56,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366185087] [2022-03-01 17:23:56,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366185087] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:23:56,709 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:23:56,709 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 17:23:56,709 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962531577] [2022-03-01 17:23:56,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:23:56,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-01 17:23:56,710 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:23:56,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-01 17:23:56,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-01 17:23:56,710 INFO L87 Difference]: Start difference. First operand 45439 states and 266516 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:23:57,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:23:57,545 INFO L93 Difference]: Finished difference Result 55542 states and 319905 transitions. [2022-03-01 17:23:57,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-01 17:23:57,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2022-03-01 17:23:57,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:23:58,084 INFO L225 Difference]: With dead ends: 55542 [2022-03-01 17:23:58,085 INFO L226 Difference]: Without dead ends: 55066 [2022-03-01 17:23:58,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-01 17:23:58,085 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:23:58,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 37 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:23:58,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55066 states. [2022-03-01 17:23:59,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55066 to 48103. [2022-03-01 17:23:59,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48103 states, 48102 states have (on average 5.849070724709991) internal successors, (281352), 48102 states have internal predecessors, (281352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:00,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48103 states to 48103 states and 281352 transitions. [2022-03-01 17:24:00,206 INFO L78 Accepts]: Start accepts. Automaton has 48103 states and 281352 transitions. Word has length 31 [2022-03-01 17:24:00,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:24:00,206 INFO L470 AbstractCegarLoop]: Abstraction has 48103 states and 281352 transitions. [2022-03-01 17:24:00,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:00,207 INFO L276 IsEmpty]: Start isEmpty. Operand 48103 states and 281352 transitions. [2022-03-01 17:24:00,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:24:00,373 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:24:00,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:24:00,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-01 17:24:00,373 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:24:00,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:24:00,374 INFO L85 PathProgramCache]: Analyzing trace with hash 437026629, now seen corresponding path program 1 times [2022-03-01 17:24:00,374 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:24:00,374 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372969072] [2022-03-01 17:24:00,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:24:00,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:24:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:24:00,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:00,419 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:24:00,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372969072] [2022-03-01 17:24:00,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372969072] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:24:00,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431383821] [2022-03-01 17:24:00,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:24:00,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:00,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:24:00,421 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) [2022-03-01 17:24:00,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-01 17:24:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:24:00,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-01 17:24:00,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:24:00,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:00,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:24:00,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:00,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431383821] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:24:00,884 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:24:00,884 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2022-03-01 17:24:00,884 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908391846] [2022-03-01 17:24:00,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:24:00,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 17:24:00,885 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:24:00,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 17:24:00,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-01 17:24:00,885 INFO L87 Difference]: Start difference. First operand 48103 states and 281352 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 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) [2022-03-01 17:24:01,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:24:01,771 INFO L93 Difference]: Finished difference Result 56784 states and 326793 transitions. [2022-03-01 17:24:01,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 17:24:01,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 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 31 [2022-03-01 17:24:01,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:24:02,289 INFO L225 Difference]: With dead ends: 56784 [2022-03-01 17:24:02,289 INFO L226 Difference]: Without dead ends: 56381 [2022-03-01 17:24:02,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-01 17:24:02,290 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 47 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:24:02,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 63 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:24:02,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56381 states. [2022-03-01 17:24:03,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56381 to 50997. [2022-03-01 17:24:03,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50997 states, 50996 states have (on average 5.823652835516511) internal successors, (296983), 50996 states have internal predecessors, (296983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:04,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50997 states to 50997 states and 296983 transitions. [2022-03-01 17:24:04,189 INFO L78 Accepts]: Start accepts. Automaton has 50997 states and 296983 transitions. Word has length 31 [2022-03-01 17:24:04,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:24:04,190 INFO L470 AbstractCegarLoop]: Abstraction has 50997 states and 296983 transitions. [2022-03-01 17:24:04,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 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) [2022-03-01 17:24:04,190 INFO L276 IsEmpty]: Start isEmpty. Operand 50997 states and 296983 transitions. [2022-03-01 17:24:04,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-01 17:24:04,682 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:24:04,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:24:04,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-01 17:24:04,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-01 17:24:04,883 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:24:04,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:24:04,883 INFO L85 PathProgramCache]: Analyzing trace with hash 745215523, now seen corresponding path program 2 times [2022-03-01 17:24:04,883 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:24:04,884 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076710555] [2022-03-01 17:24:04,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:24:04,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:24:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:24:04,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 17:24:04,932 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:24:04,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076710555] [2022-03-01 17:24:04,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076710555] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:24:04,932 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:24:04,932 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 17:24:04,932 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894835640] [2022-03-01 17:24:04,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:24:04,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-01 17:24:04,933 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:24:04,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-01 17:24:04,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-01 17:24:04,933 INFO L87 Difference]: Start difference. First operand 50997 states and 296983 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:05,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:24:05,795 INFO L93 Difference]: Finished difference Result 58483 states and 336376 transitions. [2022-03-01 17:24:05,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-01 17:24:05,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2022-03-01 17:24:05,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:24:06,134 INFO L225 Difference]: With dead ends: 58483 [2022-03-01 17:24:06,134 INFO L226 Difference]: Without dead ends: 58080 [2022-03-01 17:24:06,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-01 17:24:06,135 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 30 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:24:06,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 37 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:24:06,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58080 states. [2022-03-01 17:24:07,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58080 to 53054. [2022-03-01 17:24:07,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53054 states, 53053 states have (on average 5.811565792697868) internal successors, (308321), 53053 states have internal predecessors, (308321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:08,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53054 states to 53054 states and 308321 transitions. [2022-03-01 17:24:08,443 INFO L78 Accepts]: Start accepts. Automaton has 53054 states and 308321 transitions. Word has length 31 [2022-03-01 17:24:08,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:24:08,444 INFO L470 AbstractCegarLoop]: Abstraction has 53054 states and 308321 transitions. [2022-03-01 17:24:08,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:08,444 INFO L276 IsEmpty]: Start isEmpty. Operand 53054 states and 308321 transitions. [2022-03-01 17:24:08,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-01 17:24:08,628 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:24:08,628 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:24:08,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-01 17:24:08,628 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:24:08,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:24:08,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1780866909, now seen corresponding path program 3 times [2022-03-01 17:24:08,629 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:24:08,629 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656518194] [2022-03-01 17:24:08,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:24:08,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:24:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:24:08,660 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:08,660 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:24:08,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656518194] [2022-03-01 17:24:08,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656518194] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:24:08,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596441144] [2022-03-01 17:24:08,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:24:08,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:08,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:24:08,662 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) [2022-03-01 17:24:08,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-01 17:24:08,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 17:24:08,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:24:08,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:24:08,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:24:08,759 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:08,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:24:08,823 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:08,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596441144] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:24:08,823 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:24:08,823 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-03-01 17:24:08,823 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134327842] [2022-03-01 17:24:08,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:24:08,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:24:08,824 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:24:08,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:24:08,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:24:08,824 INFO L87 Difference]: Start difference. First operand 53054 states and 308321 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:11,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:24:11,700 INFO L93 Difference]: Finished difference Result 166964 states and 963436 transitions. [2022-03-01 17:24:11,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-01 17:24:11,700 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 [2022-03-01 17:24:11,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:24:13,175 INFO L225 Difference]: With dead ends: 166964 [2022-03-01 17:24:13,175 INFO L226 Difference]: Without dead ends: 166964 [2022-03-01 17:24:13,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2022-03-01 17:24:13,176 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 349 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:24:13,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 396 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:24:13,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166964 states. [2022-03-01 17:24:17,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166964 to 71659. [2022-03-01 17:24:17,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71659 states, 71658 states have (on average 5.932080158530799) internal successors, (425081), 71658 states have internal predecessors, (425081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:18,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71659 states to 71659 states and 425081 transitions. [2022-03-01 17:24:18,588 INFO L78 Accepts]: Start accepts. Automaton has 71659 states and 425081 transitions. Word has length 33 [2022-03-01 17:24:18,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:24:18,588 INFO L470 AbstractCegarLoop]: Abstraction has 71659 states and 425081 transitions. [2022-03-01 17:24:18,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:18,588 INFO L276 IsEmpty]: Start isEmpty. Operand 71659 states and 425081 transitions. [2022-03-01 17:24:18,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-01 17:24:18,865 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:24:18,865 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:24:18,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-01 17:24:19,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:19,066 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:24:19,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:24:19,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1104689831, now seen corresponding path program 4 times [2022-03-01 17:24:19,067 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:24:19,067 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419265372] [2022-03-01 17:24:19,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:24:19,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:24:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:24:19,092 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:19,092 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:24:19,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419265372] [2022-03-01 17:24:19,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419265372] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:24:19,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905378846] [2022-03-01 17:24:19,093 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:24:19,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:19,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:24:19,094 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) [2022-03-01 17:24:19,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-01 17:24:19,122 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:24:19,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:24:19,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:24:19,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:24:19,180 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:19,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:24:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:19,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905378846] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:24:19,233 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:24:19,233 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-03-01 17:24:19,234 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969836740] [2022-03-01 17:24:19,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:24:19,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:24:19,234 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:24:19,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:24:19,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:24:19,234 INFO L87 Difference]: Start difference. First operand 71659 states and 425081 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:21,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:24:21,729 INFO L93 Difference]: Finished difference Result 151965 states and 880181 transitions. [2022-03-01 17:24:21,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 17:24:21,729 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 [2022-03-01 17:24:21,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:24:23,128 INFO L225 Difference]: With dead ends: 151965 [2022-03-01 17:24:23,128 INFO L226 Difference]: Without dead ends: 151069 [2022-03-01 17:24:23,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-03-01 17:24:23,129 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 395 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:24:23,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 275 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:24:23,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151069 states. [2022-03-01 17:24:27,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151069 to 98035. [2022-03-01 17:24:27,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98035 states, 98034 states have (on average 6.051471938307118) internal successors, (593250), 98034 states have internal predecessors, (593250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:29,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98035 states to 98035 states and 593250 transitions. [2022-03-01 17:24:29,344 INFO L78 Accepts]: Start accepts. Automaton has 98035 states and 593250 transitions. Word has length 33 [2022-03-01 17:24:29,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:24:29,344 INFO L470 AbstractCegarLoop]: Abstraction has 98035 states and 593250 transitions. [2022-03-01 17:24:29,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:29,344 INFO L276 IsEmpty]: Start isEmpty. Operand 98035 states and 593250 transitions. [2022-03-01 17:24:30,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-01 17:24:30,201 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:24:30,201 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:24:30,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-03-01 17:24:30,427 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,SelfDestructingSolverStorable17 [2022-03-01 17:24:30,427 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:24:30,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:24:30,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1076846567, now seen corresponding path program 5 times [2022-03-01 17:24:30,428 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:24:30,428 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036531518] [2022-03-01 17:24:30,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:24:30,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:24:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:24:30,462 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:30,462 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:24:30,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036531518] [2022-03-01 17:24:30,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036531518] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:24:30,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762123773] [2022-03-01 17:24:30,462 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:24:30,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:30,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:24:30,464 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) [2022-03-01 17:24:30,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-01 17:24:30,494 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 17:24:30,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:24:30,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:24:30,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:24:30,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:30,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:24:30,621 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:30,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762123773] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:24:30,622 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:24:30,622 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-01 17:24:30,624 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728210341] [2022-03-01 17:24:30,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:24:30,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:24:30,625 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:24:30,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:24:30,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:24:30,625 INFO L87 Difference]: Start difference. First operand 98035 states and 593250 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:33,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:24:33,249 INFO L93 Difference]: Finished difference Result 145413 states and 850897 transitions. [2022-03-01 17:24:33,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 17:24:33,249 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 [2022-03-01 17:24:33,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:24:34,808 INFO L225 Difference]: With dead ends: 145413 [2022-03-01 17:24:34,808 INFO L226 Difference]: Without dead ends: 145413 [2022-03-01 17:24:34,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-03-01 17:24:34,809 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 319 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:24:34,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 260 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:24:35,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145413 states. [2022-03-01 17:24:39,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145413 to 96954. [2022-03-01 17:24:39,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96954 states, 96953 states have (on average 6.02823017338298) internal successors, (584455), 96953 states have internal predecessors, (584455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:41,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96954 states to 96954 states and 584455 transitions. [2022-03-01 17:24:41,178 INFO L78 Accepts]: Start accepts. Automaton has 96954 states and 584455 transitions. Word has length 33 [2022-03-01 17:24:41,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:24:41,179 INFO L470 AbstractCegarLoop]: Abstraction has 96954 states and 584455 transitions. [2022-03-01 17:24:41,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:41,179 INFO L276 IsEmpty]: Start isEmpty. Operand 96954 states and 584455 transitions. [2022-03-01 17:24:41,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-01 17:24:41,578 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:24:41,578 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:24:41,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-03-01 17:24:41,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:41,779 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:24:41,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:24:41,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1104372643, now seen corresponding path program 6 times [2022-03-01 17:24:41,780 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:24:41,780 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631888683] [2022-03-01 17:24:41,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:24:41,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:24:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:24:41,803 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:41,803 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:24:41,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631888683] [2022-03-01 17:24:41,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631888683] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:24:41,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319686093] [2022-03-01 17:24:41,804 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:24:41,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:41,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:24:41,805 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) [2022-03-01 17:24:41,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-01 17:24:41,834 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 17:24:41,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:24:41,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:24:41,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:24:41,899 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:41,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:24:41,948 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:41,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319686093] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:24:41,949 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:24:41,949 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-01 17:24:41,949 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535272679] [2022-03-01 17:24:41,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:24:41,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:24:41,949 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:24:41,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:24:41,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:24:41,950 INFO L87 Difference]: Start difference. First operand 96954 states and 584455 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:44,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:24:44,228 INFO L93 Difference]: Finished difference Result 133964 states and 783258 transitions. [2022-03-01 17:24:44,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 17:24:44,228 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 [2022-03-01 17:24:44,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:24:45,204 INFO L225 Difference]: With dead ends: 133964 [2022-03-01 17:24:45,204 INFO L226 Difference]: Without dead ends: 133804 [2022-03-01 17:24:45,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-03-01 17:24:45,207 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 320 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:24:45,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 284 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:24:45,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133804 states. [2022-03-01 17:24:49,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133804 to 97004. [2022-03-01 17:24:49,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97004 states, 97003 states have (on average 6.026844530581529) internal successors, (584622), 97003 states have internal predecessors, (584622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:51,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97004 states to 97004 states and 584622 transitions. [2022-03-01 17:24:51,115 INFO L78 Accepts]: Start accepts. Automaton has 97004 states and 584622 transitions. Word has length 33 [2022-03-01 17:24:51,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:24:51,115 INFO L470 AbstractCegarLoop]: Abstraction has 97004 states and 584622 transitions. [2022-03-01 17:24:51,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:51,115 INFO L276 IsEmpty]: Start isEmpty. Operand 97004 states and 584622 transitions. [2022-03-01 17:24:51,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-01 17:24:51,699 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:24:51,699 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:24:51,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-01 17:24:51,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:51,918 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:24:51,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:24:51,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1900679335, now seen corresponding path program 7 times [2022-03-01 17:24:51,918 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:24:51,918 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605023015] [2022-03-01 17:24:51,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:24:51,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:24:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:24:51,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:51,948 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:24:51,948 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605023015] [2022-03-01 17:24:51,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605023015] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:24:51,948 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342362617] [2022-03-01 17:24:51,948 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:24:51,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:24:51,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:24:51,952 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) [2022-03-01 17:24:51,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-01 17:24:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:24:51,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:24:51,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:24:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:24:52,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:24:52,133 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:24:52,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342362617] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:24:52,133 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:24:52,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-01 17:24:52,134 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025687880] [2022-03-01 17:24:52,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:24:52,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:24:52,134 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:24:52,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:24:52,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:24:52,135 INFO L87 Difference]: Start difference. First operand 97004 states and 584622 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:24:56,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:24:56,227 INFO L93 Difference]: Finished difference Result 227012 states and 1346306 transitions. [2022-03-01 17:24:56,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 17:24:56,228 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 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 [2022-03-01 17:24:56,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:24:58,469 INFO L225 Difference]: With dead ends: 227012 [2022-03-01 17:24:58,470 INFO L226 Difference]: Without dead ends: 227012 [2022-03-01 17:24:58,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-03-01 17:24:58,470 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 547 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:24:58,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [547 Valid, 187 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:24:59,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227012 states. [2022-03-01 17:25:05,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227012 to 126089. [2022-03-01 17:25:05,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126089 states, 126088 states have (on average 6.168192056341603) internal successors, (777735), 126088 states have internal predecessors, (777735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:25:07,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126089 states to 126089 states and 777735 transitions. [2022-03-01 17:25:07,261 INFO L78 Accepts]: Start accepts. Automaton has 126089 states and 777735 transitions. Word has length 33 [2022-03-01 17:25:07,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:25:07,262 INFO L470 AbstractCegarLoop]: Abstraction has 126089 states and 777735 transitions. [2022-03-01 17:25:07,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:25:07,262 INFO L276 IsEmpty]: Start isEmpty. Operand 126089 states and 777735 transitions. [2022-03-01 17:25:08,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-01 17:25:08,100 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:25:08,100 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:25:08,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-01 17:25:08,315 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,SelfDestructingSolverStorable20 [2022-03-01 17:25:08,315 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:25:08,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:25:08,316 INFO L85 PathProgramCache]: Analyzing trace with hash -413595687, now seen corresponding path program 8 times [2022-03-01 17:25:08,316 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:25:08,316 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591233601] [2022-03-01 17:25:08,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:25:08,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:25:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:25:08,336 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:08,337 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:25:08,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591233601] [2022-03-01 17:25:08,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591233601] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:25:08,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286019002] [2022-03-01 17:25:08,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:25:08,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:25:08,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:25:08,339 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) [2022-03-01 17:25:08,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-01 17:25:08,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:25:08,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:25:08,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:25:08,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:25:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:08,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:25:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:25:08,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286019002] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:25:08,487 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:25:08,487 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-01 17:25:08,487 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959052876] [2022-03-01 17:25:08,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:25:08,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:25:08,488 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:25:08,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:25:08,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:25:08,488 INFO L87 Difference]: Start difference. First operand 126089 states and 777735 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:25:11,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:25:11,320 INFO L93 Difference]: Finished difference Result 173970 states and 1035526 transitions. [2022-03-01 17:25:11,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 17:25:11,320 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-03-01 17:25:11,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:25:13,009 INFO L225 Difference]: With dead ends: 173970 [2022-03-01 17:25:13,009 INFO L226 Difference]: Without dead ends: 173746 [2022-03-01 17:25:13,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-03-01 17:25:13,010 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 250 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:25:13,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 359 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:25:13,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173746 states. [2022-03-01 17:25:18,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173746 to 125926. [2022-03-01 17:25:18,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125926 states, 125925 states have (on average 6.16766329164185) internal successors, (776663), 125925 states have internal predecessors, (776663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:25:20,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125926 states to 125926 states and 776663 transitions. [2022-03-01 17:25:20,494 INFO L78 Accepts]: Start accepts. Automaton has 125926 states and 776663 transitions. Word has length 33 [2022-03-01 17:25:20,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:25:20,495 INFO L470 AbstractCegarLoop]: Abstraction has 125926 states and 776663 transitions. [2022-03-01 17:25:20,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:25:20,495 INFO L276 IsEmpty]: Start isEmpty. Operand 125926 states and 776663 transitions. [2022-03-01 17:25:21,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-01 17:25:21,292 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:25:21,292 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:25:21,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-01 17:25:21,507 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,SelfDestructingSolverStorable21 [2022-03-01 17:25:21,508 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:25:21,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:25:21,508 INFO L85 PathProgramCache]: Analyzing trace with hash -394078123, now seen corresponding path program 9 times [2022-03-01 17:25:21,509 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:25:21,509 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412686769] [2022-03-01 17:25:21,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:25:21,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:25:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:25:21,543 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:21,543 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:25:21,543 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412686769] [2022-03-01 17:25:21,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412686769] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:25:21,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104435309] [2022-03-01 17:25:21,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:25:21,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:25:21,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:25:21,545 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) [2022-03-01 17:25:21,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-01 17:25:21,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 17:25:21,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:25:21,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:25:21,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:25:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:21,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:25:21,721 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:25:21,722 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104435309] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:25:21,722 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:25:21,722 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-01 17:25:21,722 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792743378] [2022-03-01 17:25:21,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:25:21,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:25:21,722 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:25:21,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:25:21,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:25:21,723 INFO L87 Difference]: Start difference. First operand 125926 states and 776663 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 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) [2022-03-01 17:25:25,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:25:25,598 INFO L93 Difference]: Finished difference Result 199329 states and 1186134 transitions. [2022-03-01 17:25:25,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 17:25:25,599 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-03-01 17:25:25,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:25:27,607 INFO L225 Difference]: With dead ends: 199329 [2022-03-01 17:25:27,608 INFO L226 Difference]: Without dead ends: 199329 [2022-03-01 17:25:27,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-03-01 17:25:27,608 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 371 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:25:27,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 312 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:25:27,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199329 states. [2022-03-01 17:25:33,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199329 to 128232. [2022-03-01 17:25:34,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128232 states, 128231 states have (on average 6.171487393843922) internal successors, (791376), 128231 states have internal predecessors, (791376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:25:35,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128232 states to 128232 states and 791376 transitions. [2022-03-01 17:25:35,619 INFO L78 Accepts]: Start accepts. Automaton has 128232 states and 791376 transitions. Word has length 33 [2022-03-01 17:25:35,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:25:35,620 INFO L470 AbstractCegarLoop]: Abstraction has 128232 states and 791376 transitions. [2022-03-01 17:25:35,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 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) [2022-03-01 17:25:35,620 INFO L276 IsEmpty]: Start isEmpty. Operand 128232 states and 791376 transitions. [2022-03-01 17:25:36,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-01 17:25:36,470 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:25:36,470 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:25:36,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-01 17:25:36,671 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,SelfDestructingSolverStorable22 [2022-03-01 17:25:36,671 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:25:36,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:25:36,671 INFO L85 PathProgramCache]: Analyzing trace with hash -366552047, now seen corresponding path program 10 times [2022-03-01 17:25:36,672 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:25:36,672 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692748798] [2022-03-01 17:25:36,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:25:36,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:25:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:25:36,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:36,697 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:25:36,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692748798] [2022-03-01 17:25:36,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692748798] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:25:36,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137833124] [2022-03-01 17:25:36,697 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:25:36,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:25:36,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:25:36,698 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) [2022-03-01 17:25:36,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-01 17:25:36,731 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:25:36,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:25:36,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:25:36,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:25:36,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:36,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:25:36,840 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:25:36,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137833124] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:25:36,841 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:25:36,841 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-03-01 17:25:36,841 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45559980] [2022-03-01 17:25:36,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:25:36,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:25:36,841 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:25:36,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:25:36,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:25:36,842 INFO L87 Difference]: Start difference. First operand 128232 states and 791376 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 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) [2022-03-01 17:25:40,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:25:40,540 INFO L93 Difference]: Finished difference Result 216985 states and 1280323 transitions. [2022-03-01 17:25:40,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-01 17:25:40,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-03-01 17:25:40,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:25:42,717 INFO L225 Difference]: With dead ends: 216985 [2022-03-01 17:25:42,717 INFO L226 Difference]: Without dead ends: 216825 [2022-03-01 17:25:42,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-03-01 17:25:42,718 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 465 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:25:42,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 251 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:25:43,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216825 states. [2022-03-01 17:25:49,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216825 to 128330. [2022-03-01 17:25:49,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128330 states, 128329 states have (on average 6.170133017478512) internal successors, (791807), 128329 states have internal predecessors, (791807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:25:51,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128330 states to 128330 states and 791807 transitions. [2022-03-01 17:25:51,962 INFO L78 Accepts]: Start accepts. Automaton has 128330 states and 791807 transitions. Word has length 33 [2022-03-01 17:25:51,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:25:51,962 INFO L470 AbstractCegarLoop]: Abstraction has 128330 states and 791807 transitions. [2022-03-01 17:25:51,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 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) [2022-03-01 17:25:51,962 INFO L276 IsEmpty]: Start isEmpty. Operand 128330 states and 791807 transitions. [2022-03-01 17:25:52,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-01 17:25:52,846 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:25:52,846 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:25:52,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-03-01 17:25:53,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:25:53,059 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:25:53,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:25:53,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1467110297, now seen corresponding path program 11 times [2022-03-01 17:25:53,060 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:25:53,060 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210972094] [2022-03-01 17:25:53,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:25:53,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:25:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:25:53,107 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:53,107 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:25:53,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210972094] [2022-03-01 17:25:53,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210972094] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:25:53,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042329820] [2022-03-01 17:25:53,107 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:25:53,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:25:53,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:25:53,108 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) [2022-03-01 17:25:53,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-01 17:25:53,143 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 17:25:53,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:25:53,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:25:53,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:25:53,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:53,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:25:53,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:25:53,315 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042329820] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:25:53,315 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:25:53,315 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-03-01 17:25:53,315 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163494600] [2022-03-01 17:25:53,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:25:53,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:25:53,316 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:25:53,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:25:53,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:25:53,317 INFO L87 Difference]: Start difference. First operand 128330 states and 791807 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 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) [2022-03-01 17:25:58,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:25:58,086 INFO L93 Difference]: Finished difference Result 212002 states and 1272275 transitions. [2022-03-01 17:25:58,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-01 17:25:58,087 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 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 33 [2022-03-01 17:25:58,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:26:00,262 INFO L225 Difference]: With dead ends: 212002 [2022-03-01 17:26:00,262 INFO L226 Difference]: Without dead ends: 212002 [2022-03-01 17:26:00,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2022-03-01 17:26:00,263 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 329 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:26:00,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 375 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:26:01,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212002 states. [2022-03-01 17:26:07,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212002 to 140596. [2022-03-01 17:26:07,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140596 states, 140595 states have (on average 6.156221771755752) internal successors, (865534), 140595 states have internal predecessors, (865534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:26:10,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140596 states to 140596 states and 865534 transitions. [2022-03-01 17:26:10,070 INFO L78 Accepts]: Start accepts. Automaton has 140596 states and 865534 transitions. Word has length 33 [2022-03-01 17:26:10,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:26:10,070 INFO L470 AbstractCegarLoop]: Abstraction has 140596 states and 865534 transitions. [2022-03-01 17:26:10,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 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) [2022-03-01 17:26:10,070 INFO L276 IsEmpty]: Start isEmpty. Operand 140596 states and 865534 transitions. [2022-03-01 17:26:11,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-01 17:26:11,002 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:26:11,002 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:26:11,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-01 17:26:11,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:26:11,211 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:26:11,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:26:11,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1869736713, now seen corresponding path program 12 times [2022-03-01 17:26:11,212 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:26:11,212 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301025731] [2022-03-01 17:26:11,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:26:11,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:26:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:26:11,235 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:26:11,235 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:26:11,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301025731] [2022-03-01 17:26:11,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301025731] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:26:11,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139254214] [2022-03-01 17:26:11,235 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:26:11,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:26:11,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:26:11,237 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) [2022-03-01 17:26:11,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-01 17:26:11,613 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 17:26:11,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:26:11,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:26:11,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:26:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:26:11,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:26:11,766 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:26:11,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139254214] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:26:11,767 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:26:11,767 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-03-01 17:26:11,767 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294537686] [2022-03-01 17:26:11,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:26:11,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:26:11,767 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:26:11,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:26:11,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:26:11,768 INFO L87 Difference]: Start difference. First operand 140596 states and 865534 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 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) [2022-03-01 17:26:15,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:26:15,803 INFO L93 Difference]: Finished difference Result 227249 states and 1340487 transitions. [2022-03-01 17:26:15,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 17:26:15,803 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 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 33 [2022-03-01 17:26:15,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:26:18,670 INFO L225 Difference]: With dead ends: 227249 [2022-03-01 17:26:18,670 INFO L226 Difference]: Without dead ends: 226769 [2022-03-01 17:26:18,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-03-01 17:26:18,671 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 426 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:26:18,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 248 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:26:19,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226769 states. [2022-03-01 17:26:26,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226769 to 146902. [2022-03-01 17:26:26,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146902 states, 146901 states have (on average 6.137010639818653) internal successors, (901533), 146901 states have internal predecessors, (901533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:26:28,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146902 states to 146902 states and 901533 transitions. [2022-03-01 17:26:28,873 INFO L78 Accepts]: Start accepts. Automaton has 146902 states and 901533 transitions. Word has length 33 [2022-03-01 17:26:28,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:26:28,873 INFO L470 AbstractCegarLoop]: Abstraction has 146902 states and 901533 transitions. [2022-03-01 17:26:28,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 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) [2022-03-01 17:26:28,874 INFO L276 IsEmpty]: Start isEmpty. Operand 146902 states and 901533 transitions. [2022-03-01 17:26:29,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-01 17:26:29,993 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:26:29,993 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:26:30,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-03-01 17:26:30,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-03-01 17:26:30,195 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:26:30,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:26:30,196 INFO L85 PathProgramCache]: Analyzing trace with hash -446070165, now seen corresponding path program 3 times [2022-03-01 17:26:30,196 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:26:30,196 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688226760] [2022-03-01 17:26:30,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:26:30,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:26:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:26:30,226 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:26:30,227 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:26:30,227 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688226760] [2022-03-01 17:26:30,227 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688226760] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:26:30,227 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675220726] [2022-03-01 17:26:30,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:26:30,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:26:30,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:26:30,228 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) [2022-03-01 17:26:30,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-01 17:26:30,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 17:26:30,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:26:30,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:26:30,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:26:30,356 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:26:30,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:26:30,419 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:26:30,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675220726] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:26:30,419 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:26:30,419 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-03-01 17:26:30,419 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733866325] [2022-03-01 17:26:30,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:26:30,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:26:30,420 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:26:30,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:26:30,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:26:30,420 INFO L87 Difference]: Start difference. First operand 146902 states and 901533 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) [2022-03-01 17:26:42,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:26:42,296 INFO L93 Difference]: Finished difference Result 536851 states and 3267778 transitions. [2022-03-01 17:26:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-01 17:26:42,296 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 33 [2022-03-01 17:26:42,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:26:50,883 INFO L225 Difference]: With dead ends: 536851 [2022-03-01 17:26:50,883 INFO L226 Difference]: Without dead ends: 536851 [2022-03-01 17:26:50,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2022-03-01 17:26:50,883 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 296 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:26:50,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 416 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:26:52,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536851 states. [2022-03-01 17:27:09,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536851 to 223496. [2022-03-01 17:27:09,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223496 states, 223495 states have (on average 6.274547529027495) internal successors, (1402330), 223495 states have internal predecessors, (1402330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:27:13,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223496 states to 223496 states and 1402330 transitions. [2022-03-01 17:27:13,364 INFO L78 Accepts]: Start accepts. Automaton has 223496 states and 1402330 transitions. Word has length 33 [2022-03-01 17:27:13,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:27:13,364 INFO L470 AbstractCegarLoop]: Abstraction has 223496 states and 1402330 transitions. [2022-03-01 17:27:13,364 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) [2022-03-01 17:27:13,364 INFO L276 IsEmpty]: Start isEmpty. Operand 223496 states and 1402330 transitions. [2022-03-01 17:27:15,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-01 17:27:15,525 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:27:15,525 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:27:15,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-01 17:27:15,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-03-01 17:27:15,742 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-03-01 17:27:15,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:27:15,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1908740565, now seen corresponding path program 4 times [2022-03-01 17:27:15,743 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:27:15,743 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034687698] [2022-03-01 17:27:15,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:27:15,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:27:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:27:15,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:27:15,795 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:27:15,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034687698] [2022-03-01 17:27:15,795 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034687698] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:27:15,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210418028] [2022-03-01 17:27:15,795 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:27:15,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:27:15,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:27:15,796 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) [2022-03-01 17:27:15,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-01 17:27:15,830 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:27:15,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:27:15,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-01 17:27:15,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:27:16,264 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:27:16,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:27:16,322 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:27:16,323 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210418028] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:27:16,323 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:27:16,323 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-03-01 17:27:16,323 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143087477] [2022-03-01 17:27:16,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:27:16,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:27:16,324 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:27:16,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:27:16,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:27:16,325 INFO L87 Difference]: Start difference. First operand 223496 states and 1402330 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)