/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis FINITE_AUTOMATA -i ../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 18:41:07,915 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 18:41:07,965 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 18:41:07,972 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 18:41:07,972 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 18:41:07,994 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 18:41:07,995 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 18:41:07,995 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 18:41:07,995 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 18:41:07,995 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 18:41:07,995 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 18:41:07,995 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 18:41:07,995 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 18:41:07,995 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 18:41:07,995 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 18:41:07,996 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 18:41:07,996 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 18:41:07,996 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 18:41:07,996 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 18:41:07,996 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 18:41:07,996 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 18:41:07,996 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 18:41:07,996 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 18:41:07,996 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 18:41:07,996 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 18:41:07,996 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 18:41:07,996 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 18:41:07,996 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 18:41:07,998 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 18:41:07,998 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 18:41:07,998 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 18:41:07,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 18:41:07,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:41:07,998 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 18:41:07,998 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 18:41:07,998 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 18:41:07,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 18:41:07,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:41:07,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 18:41:07,999 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 18:41:07,999 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 18:41:07,999 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 18:41:07,999 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 18:41:07,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 18:41:07,999 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 18:41:07,999 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 18:41:07,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 18:41:07,999 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> FINITE_AUTOMATA [2025-04-13 18:41:08,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 18:41:08,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 18:41:08,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 18:41:08,209 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 18:41:08,211 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 18:41:08,212 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2025-04-13 18:41:09,459 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee5d9b5ed/90787e5a95824ff2b475fb0529fd008c/FLAGa590d0adc [2025-04-13 18:41:09,649 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 18:41:09,649 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2025-04-13 18:41:09,654 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee5d9b5ed/90787e5a95824ff2b475fb0529fd008c/FLAGa590d0adc [2025-04-13 18:41:10,508 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee5d9b5ed/90787e5a95824ff2b475fb0529fd008c [2025-04-13 18:41:10,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 18:41:10,511 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 18:41:10,512 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 18:41:10,512 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 18:41:10,517 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 18:41:10,518 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 06:41:10" (1/1) ... [2025-04-13 18:41:10,519 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@250baebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:41:10, skipping insertion in model container [2025-04-13 18:41:10,519 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 06:41:10" (1/1) ... [2025-04-13 18:41:10,536 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 18:41:10,668 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c[2663,2676] [2025-04-13 18:41:10,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 18:41:10,682 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 18:41:10,703 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c[2663,2676] [2025-04-13 18:41:10,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 18:41:10,719 INFO L204 MainTranslator]: Completed translation [2025-04-13 18:41:10,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:41:10 WrapperNode [2025-04-13 18:41:10,719 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 18:41:10,720 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 18:41:10,720 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 18:41:10,720 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 18:41:10,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:41:10" (1/1) ... [2025-04-13 18:41:10,730 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:41:10" (1/1) ... [2025-04-13 18:41:10,744 INFO L138 Inliner]: procedures = 21, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 108 [2025-04-13 18:41:10,744 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 18:41:10,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 18:41:10,744 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 18:41:10,744 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 18:41:10,751 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:41:10" (1/1) ... [2025-04-13 18:41:10,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:41:10" (1/1) ... [2025-04-13 18:41:10,755 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:41:10" (1/1) ... [2025-04-13 18:41:10,768 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-04-13 18:41:10,768 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:41:10" (1/1) ... [2025-04-13 18:41:10,768 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:41:10" (1/1) ... [2025-04-13 18:41:10,771 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:41:10" (1/1) ... [2025-04-13 18:41:10,771 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:41:10" (1/1) ... [2025-04-13 18:41:10,773 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:41:10" (1/1) ... [2025-04-13 18:41:10,774 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:41:10" (1/1) ... [2025-04-13 18:41:10,774 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:41:10" (1/1) ... [2025-04-13 18:41:10,776 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 18:41:10,777 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 18:41:10,777 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 18:41:10,777 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 18:41:10,777 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:41:10" (1/1) ... [2025-04-13 18:41:10,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:41:10,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:41:10,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-13 18:41:10,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-13 18:41:10,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 18:41:10,817 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 18:41:10,817 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 18:41:10,817 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 18:41:10,817 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 18:41:10,817 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-13 18:41:10,817 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-13 18:41:10,817 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-13 18:41:10,817 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-13 18:41:10,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 18:41:10,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 18:41:10,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 18:41:10,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 18:41:10,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 18:41:10,819 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 18:41:10,891 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 18:41:10,893 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 18:41:11,075 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 18:41:11,076 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 18:41:11,076 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 18:41:11,269 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 18:41:11,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 06:41:11 BoogieIcfgContainer [2025-04-13 18:41:11,270 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 18:41:11,272 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 18:41:11,272 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 18:41:11,275 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 18:41:11,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 06:41:10" (1/3) ... [2025-04-13 18:41:11,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4453e2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 06:41:11, skipping insertion in model container [2025-04-13 18:41:11,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:41:10" (2/3) ... [2025-04-13 18:41:11,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4453e2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 06:41:11, skipping insertion in model container [2025-04-13 18:41:11,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 06:41:11" (3/3) ... [2025-04-13 18:41:11,277 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2025-04-13 18:41:11,287 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 18:41:11,288 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c that has 5 procedures, 32 locations, 31 edges, 1 initial locations, 4 loop locations, and 1 error locations. [2025-04-13 18:41:11,289 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 18:41:11,330 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-13 18:41:11,352 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 44 places, 35 transitions, 98 flow [2025-04-13 18:41:11,439 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 768 states, 767 states have (on average 4.229465449804433) internal successors, (3244), 767 states have internal predecessors, (3244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:11,459 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 18:41:11,471 INFO L340 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@15fde6d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 18:41:11,472 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-13 18:41:11,475 INFO L278 IsEmpty]: Start isEmpty. Operand has 768 states, 767 states have (on average 4.229465449804433) internal successors, (3244), 767 states have internal predecessors, (3244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:11,493 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-04-13 18:41:11,493 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:41:11,494 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:41:11,494 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:41:11,498 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:41:11,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1619661589, now seen corresponding path program 1 times [2025-04-13 18:41:11,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:41:11,504 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509340639] [2025-04-13 18:41:11,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:41:11,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:41:11,566 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-13 18:41:11,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 18:41:11,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:41:11,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:41:11,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:41:11,738 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509340639] [2025-04-13 18:41:11,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509340639] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:41:11,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:41:11,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 18:41:11,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776962255] [2025-04-13 18:41:11,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:41:11,747 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 18:41:11,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:41:11,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 18:41:11,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 18:41:11,767 INFO L87 Difference]: Start difference. First operand has 768 states, 767 states have (on average 4.229465449804433) internal successors, (3244), 767 states have internal predecessors, (3244), 0 states have call successors, (0), 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, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:11,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:41:11,915 INFO L93 Difference]: Finished difference Result 2165 states and 9196 transitions. [2025-04-13 18:41:11,916 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 18:41:11,917 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-04-13 18:41:11,918 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:41:11,943 INFO L225 Difference]: With dead ends: 2165 [2025-04-13 18:41:11,943 INFO L226 Difference]: Without dead ends: 1418 [2025-04-13 18:41:11,947 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 18:41:11,949 INFO L437 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:41:11,950 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 16 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:41:11,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2025-04-13 18:41:12,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1402. [2025-04-13 18:41:12,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1401 states have (on average 4.0513918629550325) internal successors, (5676), 1401 states have internal predecessors, (5676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:12,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 5676 transitions. [2025-04-13 18:41:12,104 INFO L79 Accepts]: Start accepts. Automaton has 1402 states and 5676 transitions. Word has length 22 [2025-04-13 18:41:12,105 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:41:12,105 INFO L485 AbstractCegarLoop]: Abstraction has 1402 states and 5676 transitions. [2025-04-13 18:41:12,105 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:12,105 INFO L278 IsEmpty]: Start isEmpty. Operand 1402 states and 5676 transitions. [2025-04-13 18:41:12,112 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-04-13 18:41:12,112 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:41:12,112 INFO L218 NwaCegarLoop]: 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] [2025-04-13 18:41:12,113 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 18:41:12,113 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:41:12,113 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:41:12,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1570082131, now seen corresponding path program 1 times [2025-04-13 18:41:12,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:41:12,114 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872594001] [2025-04-13 18:41:12,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:41:12,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:41:12,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-13 18:41:12,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-13 18:41:12,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:41:12,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:12,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:41:12,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:41:12,292 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872594001] [2025-04-13 18:41:12,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872594001] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:41:12,292 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963255201] [2025-04-13 18:41:12,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:41:12,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:41:12,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:41:12,295 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) [2025-04-13 18:41:12,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-13 18:41:12,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-13 18:41:12,384 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-13 18:41:12,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:41:12,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:12,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-13 18:41:12,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:41:12,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:41:12,524 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:41:12,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:41:12,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963255201] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-13 18:41:12,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-13 18:41:12,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2025-04-13 18:41:12,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136258404] [2025-04-13 18:41:12,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:41:12,579 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 18:41:12,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:41:12,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 18:41:12,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-04-13 18:41:12,579 INFO L87 Difference]: Start difference. First operand 1402 states and 5676 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:12,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:41:12,755 INFO L93 Difference]: Finished difference Result 2097 states and 8506 transitions. [2025-04-13 18:41:12,756 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 18:41:12,756 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2025-04-13 18:41:12,756 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:41:12,769 INFO L225 Difference]: With dead ends: 2097 [2025-04-13 18:41:12,770 INFO L226 Difference]: Without dead ends: 1954 [2025-04-13 18:41:12,771 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-04-13 18:41:12,772 INFO L437 NwaCegarLoop]: 13 mSDtfsCounter, 38 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:41:12,772 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 24 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:41:12,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2025-04-13 18:41:12,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1679. [2025-04-13 18:41:12,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1679 states, 1678 states have (on average 4.117401668653159) internal successors, (6909), 1678 states have internal predecessors, (6909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:12,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 6909 transitions. [2025-04-13 18:41:12,872 INFO L79 Accepts]: Start accepts. Automaton has 1679 states and 6909 transitions. Word has length 24 [2025-04-13 18:41:12,872 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:41:12,872 INFO L485 AbstractCegarLoop]: Abstraction has 1679 states and 6909 transitions. [2025-04-13 18:41:12,872 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:12,873 INFO L278 IsEmpty]: Start isEmpty. Operand 1679 states and 6909 transitions. [2025-04-13 18:41:12,877 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-04-13 18:41:12,877 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:41:12,877 INFO L218 NwaCegarLoop]: 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] [2025-04-13 18:41:12,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-04-13 18:41:13,078 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:41:13,078 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:41:13,079 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:41:13,079 INFO L85 PathProgramCache]: Analyzing trace with hash -595660521, now seen corresponding path program 1 times [2025-04-13 18:41:13,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:41:13,079 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289334431] [2025-04-13 18:41:13,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:41:13,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:41:13,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-13 18:41:13,090 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-13 18:41:13,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:41:13,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:13,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:41:13,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:41:13,188 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289334431] [2025-04-13 18:41:13,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289334431] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:41:13,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:41:13,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 18:41:13,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368600183] [2025-04-13 18:41:13,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:41:13,191 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 18:41:13,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:41:13,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 18:41:13,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:41:13,192 INFO L87 Difference]: Start difference. First operand 1679 states and 6909 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:13,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:41:13,404 INFO L93 Difference]: Finished difference Result 2111 states and 8343 transitions. [2025-04-13 18:41:13,404 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 18:41:13,404 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2025-04-13 18:41:13,404 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:41:13,418 INFO L225 Difference]: With dead ends: 2111 [2025-04-13 18:41:13,418 INFO L226 Difference]: Without dead ends: 1739 [2025-04-13 18:41:13,419 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:41:13,420 INFO L437 NwaCegarLoop]: 12 mSDtfsCounter, 52 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:41:13,420 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 28 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:41:13,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2025-04-13 18:41:13,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1549. [2025-04-13 18:41:13,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1549 states, 1548 states have (on average 4.155684754521964) internal successors, (6433), 1548 states have internal predecessors, (6433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:13,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 6433 transitions. [2025-04-13 18:41:13,542 INFO L79 Accepts]: Start accepts. Automaton has 1549 states and 6433 transitions. Word has length 24 [2025-04-13 18:41:13,542 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:41:13,542 INFO L485 AbstractCegarLoop]: Abstraction has 1549 states and 6433 transitions. [2025-04-13 18:41:13,542 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:13,542 INFO L278 IsEmpty]: Start isEmpty. Operand 1549 states and 6433 transitions. [2025-04-13 18:41:13,547 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-04-13 18:41:13,547 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:41:13,547 INFO L218 NwaCegarLoop]: 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] [2025-04-13 18:41:13,548 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 18:41:13,548 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:41:13,548 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:41:13,548 INFO L85 PathProgramCache]: Analyzing trace with hash 155936961, now seen corresponding path program 2 times [2025-04-13 18:41:13,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:41:13,548 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177477858] [2025-04-13 18:41:13,548 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:41:13,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:41:13,554 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-04-13 18:41:13,564 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-04-13 18:41:13,564 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:41:13,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:13,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:41:13,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:41:13,675 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177477858] [2025-04-13 18:41:13,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177477858] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:41:13,676 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955027531] [2025-04-13 18:41:13,676 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:41:13,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:41:13,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:41:13,679 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) [2025-04-13 18:41:13,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-13 18:41:13,723 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-04-13 18:41:13,742 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-04-13 18:41:13,742 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:41:13,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:13,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-13 18:41:13,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:41:13,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:41:13,827 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:41:13,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:41:13,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955027531] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-13 18:41:13,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-13 18:41:13,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 8 [2025-04-13 18:41:13,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962451581] [2025-04-13 18:41:13,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:41:13,889 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 18:41:13,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:41:13,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 18:41:13,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-04-13 18:41:13,890 INFO L87 Difference]: Start difference. First operand 1549 states and 6433 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:14,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:41:14,079 INFO L93 Difference]: Finished difference Result 1871 states and 7670 transitions. [2025-04-13 18:41:14,079 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 18:41:14,080 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2025-04-13 18:41:14,080 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:41:14,091 INFO L225 Difference]: With dead ends: 1871 [2025-04-13 18:41:14,091 INFO L226 Difference]: Without dead ends: 1629 [2025-04-13 18:41:14,093 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-04-13 18:41:14,094 INFO L437 NwaCegarLoop]: 13 mSDtfsCounter, 33 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:41:14,094 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 24 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:41:14,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2025-04-13 18:41:14,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1493. [2025-04-13 18:41:14,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 1492 states have (on average 4.17828418230563) internal successors, (6234), 1492 states have internal predecessors, (6234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:14,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 6234 transitions. [2025-04-13 18:41:14,171 INFO L79 Accepts]: Start accepts. Automaton has 1493 states and 6234 transitions. Word has length 24 [2025-04-13 18:41:14,171 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:41:14,171 INFO L485 AbstractCegarLoop]: Abstraction has 1493 states and 6234 transitions. [2025-04-13 18:41:14,171 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:14,171 INFO L278 IsEmpty]: Start isEmpty. Operand 1493 states and 6234 transitions. [2025-04-13 18:41:14,175 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-04-13 18:41:14,175 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:41:14,176 INFO L218 NwaCegarLoop]: 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] [2025-04-13 18:41:14,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-04-13 18:41:14,380 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-04-13 18:41:14,380 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:41:14,380 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:41:14,380 INFO L85 PathProgramCache]: Analyzing trace with hash 429209925, now seen corresponding path program 2 times [2025-04-13 18:41:14,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:41:14,381 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534637424] [2025-04-13 18:41:14,381 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:41:14,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:41:14,385 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-04-13 18:41:14,389 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-04-13 18:41:14,389 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:41:14,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:14,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:41:14,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:41:14,442 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534637424] [2025-04-13 18:41:14,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534637424] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:41:14,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:41:14,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 18:41:14,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110169408] [2025-04-13 18:41:14,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:41:14,443 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 18:41:14,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:41:14,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 18:41:14,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:41:14,443 INFO L87 Difference]: Start difference. First operand 1493 states and 6234 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:14,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:41:14,629 INFO L93 Difference]: Finished difference Result 2233 states and 9150 transitions. [2025-04-13 18:41:14,629 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 18:41:14,630 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2025-04-13 18:41:14,630 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:41:14,643 INFO L225 Difference]: With dead ends: 2233 [2025-04-13 18:41:14,643 INFO L226 Difference]: Without dead ends: 1939 [2025-04-13 18:41:14,644 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:41:14,645 INFO L437 NwaCegarLoop]: 12 mSDtfsCounter, 54 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:41:14,645 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 27 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:41:14,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2025-04-13 18:41:14,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1613. [2025-04-13 18:41:14,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1612 states have (on average 4.239454094292804) internal successors, (6834), 1612 states have internal predecessors, (6834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:14,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 6834 transitions. [2025-04-13 18:41:14,738 INFO L79 Accepts]: Start accepts. Automaton has 1613 states and 6834 transitions. Word has length 24 [2025-04-13 18:41:14,739 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:41:14,739 INFO L485 AbstractCegarLoop]: Abstraction has 1613 states and 6834 transitions. [2025-04-13 18:41:14,739 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:14,740 INFO L278 IsEmpty]: Start isEmpty. Operand 1613 states and 6834 transitions. [2025-04-13 18:41:14,744 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-04-13 18:41:14,744 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:41:14,744 INFO L218 NwaCegarLoop]: 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] [2025-04-13 18:41:14,744 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 18:41:14,744 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:41:14,745 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:41:14,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1936988629, now seen corresponding path program 3 times [2025-04-13 18:41:14,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:41:14,745 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546867775] [2025-04-13 18:41:14,745 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:41:14,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:41:14,750 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 1 equivalence classes. [2025-04-13 18:41:14,754 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-13 18:41:14,754 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 18:41:14,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:14,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:41:14,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:41:14,809 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546867775] [2025-04-13 18:41:14,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546867775] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:41:14,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:41:14,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 18:41:14,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514000990] [2025-04-13 18:41:14,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:41:14,809 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 18:41:14,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:41:14,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 18:41:14,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:41:14,810 INFO L87 Difference]: Start difference. First operand 1613 states and 6834 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:15,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:41:15,011 INFO L93 Difference]: Finished difference Result 2009 states and 8395 transitions. [2025-04-13 18:41:15,012 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 18:41:15,012 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2025-04-13 18:41:15,012 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:41:15,024 INFO L225 Difference]: With dead ends: 2009 [2025-04-13 18:41:15,024 INFO L226 Difference]: Without dead ends: 1742 [2025-04-13 18:41:15,025 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:41:15,026 INFO L437 NwaCegarLoop]: 12 mSDtfsCounter, 53 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:41:15,026 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 27 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:41:15,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2025-04-13 18:41:15,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1545. [2025-04-13 18:41:15,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1544 states have (on average 4.215025906735751) internal successors, (6508), 1544 states have internal predecessors, (6508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:15,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 6508 transitions. [2025-04-13 18:41:15,128 INFO L79 Accepts]: Start accepts. Automaton has 1545 states and 6508 transitions. Word has length 24 [2025-04-13 18:41:15,128 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:41:15,128 INFO L485 AbstractCegarLoop]: Abstraction has 1545 states and 6508 transitions. [2025-04-13 18:41:15,129 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:15,129 INFO L278 IsEmpty]: Start isEmpty. Operand 1545 states and 6508 transitions. [2025-04-13 18:41:15,134 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:41:15,134 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:41:15,134 INFO L218 NwaCegarLoop]: 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] [2025-04-13 18:41:15,134 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-13 18:41:15,134 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:41:15,134 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:41:15,135 INFO L85 PathProgramCache]: Analyzing trace with hash 695103829, now seen corresponding path program 1 times [2025-04-13 18:41:15,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:41:15,135 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046844328] [2025-04-13 18:41:15,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:41:15,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:41:15,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-13 18:41:15,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:41:15,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:41:15,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:41:15,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:41:15,215 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046844328] [2025-04-13 18:41:15,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046844328] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:41:15,215 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854130221] [2025-04-13 18:41:15,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:41:15,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:41:15,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:41:15,217 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) [2025-04-13 18:41:15,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-13 18:41:15,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-13 18:41:15,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:41:15,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:41:15,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:15,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 18:41:15,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:41:15,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:41:15,318 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:41:15,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:41:15,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854130221] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:41:15,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:41:15,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-04-13 18:41:15,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841737730] [2025-04-13 18:41:15,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:41:15,355 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 18:41:15,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:41:15,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 18:41:15,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-04-13 18:41:15,355 INFO L87 Difference]: Start difference. First operand 1545 states and 6508 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:15,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:41:15,801 INFO L93 Difference]: Finished difference Result 5219 states and 22795 transitions. [2025-04-13 18:41:15,801 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 18:41:15,801 INFO L79 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-04-13 18:41:15,801 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:41:15,835 INFO L225 Difference]: With dead ends: 5219 [2025-04-13 18:41:15,835 INFO L226 Difference]: Without dead ends: 4007 [2025-04-13 18:41:15,837 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-04-13 18:41:15,838 INFO L437 NwaCegarLoop]: 12 mSDtfsCounter, 139 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:41:15,838 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 51 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:41:15,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4007 states. [2025-04-13 18:41:16,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4007 to 3121. [2025-04-13 18:41:16,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3121 states, 3120 states have (on average 4.252884615384615) internal successors, (13269), 3120 states have internal predecessors, (13269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:16,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 13269 transitions. [2025-04-13 18:41:16,043 INFO L79 Accepts]: Start accepts. Automaton has 3121 states and 13269 transitions. Word has length 26 [2025-04-13 18:41:16,043 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:41:16,043 INFO L485 AbstractCegarLoop]: Abstraction has 3121 states and 13269 transitions. [2025-04-13 18:41:16,044 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:16,044 INFO L278 IsEmpty]: Start isEmpty. Operand 3121 states and 13269 transitions. [2025-04-13 18:41:16,054 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-04-13 18:41:16,054 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:41:16,054 INFO L218 NwaCegarLoop]: 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] [2025-04-13 18:41:16,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-04-13 18:41:16,255 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:41:16,255 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:41:16,256 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:41:16,256 INFO L85 PathProgramCache]: Analyzing trace with hash -843702441, now seen corresponding path program 1 times [2025-04-13 18:41:16,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:41:16,256 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418635106] [2025-04-13 18:41:16,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:41:16,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:41:16,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-13 18:41:16,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 18:41:16,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:41:16,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:16,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:41:16,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:41:16,306 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418635106] [2025-04-13 18:41:16,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418635106] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:41:16,306 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091917371] [2025-04-13 18:41:16,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:41:16,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:41:16,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:41:16,308 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) [2025-04-13 18:41:16,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-13 18:41:16,346 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-13 18:41:16,362 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 18:41:16,362 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:41:16,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:16,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-13 18:41:16,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:41:16,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:41:16,434 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:41:16,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:41:16,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091917371] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-13 18:41:16,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-13 18:41:16,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2025-04-13 18:41:16,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051178280] [2025-04-13 18:41:16,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:41:16,471 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 18:41:16,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:41:16,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 18:41:16,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-04-13 18:41:16,472 INFO L87 Difference]: Start difference. First operand 3121 states and 13269 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:16,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:41:16,872 INFO L93 Difference]: Finished difference Result 5356 states and 22179 transitions. [2025-04-13 18:41:16,872 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 18:41:16,872 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-04-13 18:41:16,872 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:41:16,895 INFO L225 Difference]: With dead ends: 5356 [2025-04-13 18:41:16,895 INFO L226 Difference]: Without dead ends: 4856 [2025-04-13 18:41:16,897 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-04-13 18:41:16,899 INFO L437 NwaCegarLoop]: 13 mSDtfsCounter, 32 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:41:16,900 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 24 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:41:16,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2025-04-13 18:41:17,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 3792. [2025-04-13 18:41:17,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3792 states, 3791 states have (on average 4.316011606436296) internal successors, (16362), 3791 states have internal predecessors, (16362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:17,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 16362 transitions. [2025-04-13 18:41:17,223 INFO L79 Accepts]: Start accepts. Automaton has 3792 states and 16362 transitions. Word has length 28 [2025-04-13 18:41:17,223 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:41:17,223 INFO L485 AbstractCegarLoop]: Abstraction has 3792 states and 16362 transitions. [2025-04-13 18:41:17,224 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:17,224 INFO L278 IsEmpty]: Start isEmpty. Operand 3792 states and 16362 transitions. [2025-04-13 18:41:17,233 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-04-13 18:41:17,233 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:41:17,233 INFO L218 NwaCegarLoop]: 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] [2025-04-13 18:41:17,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-04-13 18:41:17,437 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:41:17,437 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:41:17,437 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:41:17,437 INFO L85 PathProgramCache]: Analyzing trace with hash -821686999, now seen corresponding path program 2 times [2025-04-13 18:41:17,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:41:17,437 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744228464] [2025-04-13 18:41:17,437 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:41:17,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:41:17,444 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-04-13 18:41:17,452 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 18:41:17,452 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:41:17,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:17,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:41:17,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:41:17,505 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744228464] [2025-04-13 18:41:17,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744228464] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:41:17,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:41:17,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 18:41:17,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448773115] [2025-04-13 18:41:17,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:41:17,505 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 18:41:17,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:41:17,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 18:41:17,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:41:17,506 INFO L87 Difference]: Start difference. First operand 3792 states and 16362 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:17,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:41:17,879 INFO L93 Difference]: Finished difference Result 5137 states and 21380 transitions. [2025-04-13 18:41:17,879 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 18:41:17,880 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-04-13 18:41:17,880 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:41:17,897 INFO L225 Difference]: With dead ends: 5137 [2025-04-13 18:41:17,897 INFO L226 Difference]: Without dead ends: 4445 [2025-04-13 18:41:17,899 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:41:17,900 INFO L437 NwaCegarLoop]: 12 mSDtfsCounter, 46 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:41:17,900 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 27 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:41:17,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4445 states. [2025-04-13 18:41:18,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4445 to 3732. [2025-04-13 18:41:18,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3732 states, 3731 states have (on average 4.273921200750469) internal successors, (15946), 3731 states have internal predecessors, (15946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:18,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3732 states to 3732 states and 15946 transitions. [2025-04-13 18:41:18,173 INFO L79 Accepts]: Start accepts. Automaton has 3732 states and 15946 transitions. Word has length 28 [2025-04-13 18:41:18,173 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:41:18,173 INFO L485 AbstractCegarLoop]: Abstraction has 3732 states and 15946 transitions. [2025-04-13 18:41:18,174 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:18,174 INFO L278 IsEmpty]: Start isEmpty. Operand 3732 states and 15946 transitions. [2025-04-13 18:41:18,181 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-04-13 18:41:18,182 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:41:18,182 INFO L218 NwaCegarLoop]: 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] [2025-04-13 18:41:18,182 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-13 18:41:18,182 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:41:18,182 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:41:18,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1814321743, now seen corresponding path program 1 times [2025-04-13 18:41:18,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:41:18,182 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325344929] [2025-04-13 18:41:18,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:41:18,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:41:18,186 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-04-13 18:41:18,190 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-04-13 18:41:18,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:41:18,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:18,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:41:18,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:41:18,292 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325344929] [2025-04-13 18:41:18,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325344929] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:41:18,292 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423037871] [2025-04-13 18:41:18,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:41:18,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:41:18,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:41:18,294 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) [2025-04-13 18:41:18,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-04-13 18:41:18,335 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-04-13 18:41:18,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-04-13 18:41:18,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:41:18,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:18,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:41:18,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:41:18,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:41:18,408 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:41:18,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:41:18,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423037871] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:41:18,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:41:18,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 6 [2025-04-13 18:41:18,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674266100] [2025-04-13 18:41:18,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:41:18,461 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-13 18:41:18,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:41:18,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-13 18:41:18,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-04-13 18:41:18,462 INFO L87 Difference]: Start difference. First operand 3732 states and 15946 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:19,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:41:19,338 INFO L93 Difference]: Finished difference Result 8673 states and 37302 transitions. [2025-04-13 18:41:19,338 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 18:41:19,338 INFO L79 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-04-13 18:41:19,339 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:41:19,368 INFO L225 Difference]: With dead ends: 8673 [2025-04-13 18:41:19,368 INFO L226 Difference]: Without dead ends: 7334 [2025-04-13 18:41:19,373 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-04-13 18:41:19,373 INFO L437 NwaCegarLoop]: 24 mSDtfsCounter, 62 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:41:19,373 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 88 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:41:19,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7334 states. [2025-04-13 18:41:19,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7334 to 5040. [2025-04-13 18:41:19,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5040 states, 5039 states have (on average 4.308989878944235) internal successors, (21713), 5039 states have internal predecessors, (21713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:19,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5040 states to 5040 states and 21713 transitions. [2025-04-13 18:41:19,772 INFO L79 Accepts]: Start accepts. Automaton has 5040 states and 21713 transitions. Word has length 30 [2025-04-13 18:41:19,772 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:41:19,772 INFO L485 AbstractCegarLoop]: Abstraction has 5040 states and 21713 transitions. [2025-04-13 18:41:19,772 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:19,772 INFO L278 IsEmpty]: Start isEmpty. Operand 5040 states and 21713 transitions. [2025-04-13 18:41:19,782 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-04-13 18:41:19,782 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:41:19,782 INFO L218 NwaCegarLoop]: 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] [2025-04-13 18:41:19,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-04-13 18:41:19,983 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-04-13 18:41:19,983 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:41:19,983 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:41:19,983 INFO L85 PathProgramCache]: Analyzing trace with hash 729332755, now seen corresponding path program 2 times [2025-04-13 18:41:19,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:41:19,983 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086255359] [2025-04-13 18:41:19,983 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:41:19,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:41:19,988 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-04-13 18:41:19,994 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 18:41:19,994 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:41:19,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:20,070 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:41:20,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:41:20,071 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086255359] [2025-04-13 18:41:20,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086255359] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:41:20,071 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569189838] [2025-04-13 18:41:20,071 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:41:20,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:41:20,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:41:20,073 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) [2025-04-13 18:41:20,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-04-13 18:41:20,108 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-04-13 18:41:20,124 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 18:41:20,124 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:41:20,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:20,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-13 18:41:20,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:41:20,217 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:41:20,217 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:41:20,302 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:41:20,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569189838] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:41:20,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:41:20,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2025-04-13 18:41:20,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424937087] [2025-04-13 18:41:20,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:41:20,303 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-13 18:41:20,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:41:20,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-13 18:41:20,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2025-04-13 18:41:20,304 INFO L87 Difference]: Start difference. First operand 5040 states and 21713 transitions. Second operand has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:23,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:41:23,615 INFO L93 Difference]: Finished difference Result 20620 states and 91188 transitions. [2025-04-13 18:41:23,616 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-04-13 18:41:23,616 INFO L79 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2025-04-13 18:41:23,616 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:41:23,700 INFO L225 Difference]: With dead ends: 20620 [2025-04-13 18:41:23,700 INFO L226 Difference]: Without dead ends: 19488 [2025-04-13 18:41:23,707 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=653, Invalid=2317, Unknown=0, NotChecked=0, Total=2970 [2025-04-13 18:41:23,708 INFO L437 NwaCegarLoop]: 20 mSDtfsCounter, 518 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:41:23,708 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 226 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:41:23,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19488 states. [2025-04-13 18:41:24,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19488 to 11805. [2025-04-13 18:41:24,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11805 states, 11804 states have (on average 4.497712639783124) internal successors, (53091), 11804 states have internal predecessors, (53091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:24,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11805 states to 11805 states and 53091 transitions. [2025-04-13 18:41:24,972 INFO L79 Accepts]: Start accepts. Automaton has 11805 states and 53091 transitions. Word has length 32 [2025-04-13 18:41:24,972 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:41:24,972 INFO L485 AbstractCegarLoop]: Abstraction has 11805 states and 53091 transitions. [2025-04-13 18:41:24,972 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:24,973 INFO L278 IsEmpty]: Start isEmpty. Operand 11805 states and 53091 transitions. [2025-04-13 18:41:24,995 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-04-13 18:41:24,995 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:41:24,995 INFO L218 NwaCegarLoop]: 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] [2025-04-13 18:41:25,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-04-13 18:41:25,196 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:41:25,196 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:41:25,196 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:41:25,196 INFO L85 PathProgramCache]: Analyzing trace with hash 961116571, now seen corresponding path program 3 times [2025-04-13 18:41:25,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:41:25,197 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573217237] [2025-04-13 18:41:25,197 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:41:25,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:41:25,200 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 32 statements into 3 equivalence classes. [2025-04-13 18:41:25,207 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 18:41:25,207 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:41:25,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:25,268 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:41:25,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:41:25,268 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573217237] [2025-04-13 18:41:25,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573217237] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:41:25,268 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245128059] [2025-04-13 18:41:25,268 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:41:25,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:41:25,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:41:25,271 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) [2025-04-13 18:41:25,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-04-13 18:41:25,306 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 32 statements into 3 equivalence classes. [2025-04-13 18:41:25,320 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 18:41:25,320 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:41:25,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:25,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-13 18:41:25,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:41:25,378 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:41:25,379 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:41:25,423 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:41:25,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245128059] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:41:25,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:41:25,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2025-04-13 18:41:25,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612063131] [2025-04-13 18:41:25,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:41:25,424 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 18:41:25,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:41:25,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 18:41:25,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2025-04-13 18:41:25,424 INFO L87 Difference]: Start difference. First operand 11805 states and 53091 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:28,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:41:28,603 INFO L93 Difference]: Finished difference Result 20099 states and 88975 transitions. [2025-04-13 18:41:28,603 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-13 18:41:28,603 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2025-04-13 18:41:28,603 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:41:28,687 INFO L225 Difference]: With dead ends: 20099 [2025-04-13 18:41:28,687 INFO L226 Difference]: Without dead ends: 17829 [2025-04-13 18:41:28,695 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:41:28,696 INFO L437 NwaCegarLoop]: 20 mSDtfsCounter, 394 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:41:28,696 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 118 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:41:28,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17829 states. [2025-04-13 18:41:30,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17829 to 16205. [2025-04-13 18:41:30,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16205 states, 16204 states have (on average 4.597383362132807) internal successors, (74496), 16204 states have internal predecessors, (74496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:30,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16205 states to 16205 states and 74496 transitions. [2025-04-13 18:41:30,837 INFO L79 Accepts]: Start accepts. Automaton has 16205 states and 74496 transitions. Word has length 32 [2025-04-13 18:41:30,838 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:41:30,838 INFO L485 AbstractCegarLoop]: Abstraction has 16205 states and 74496 transitions. [2025-04-13 18:41:30,838 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:30,838 INFO L278 IsEmpty]: Start isEmpty. Operand 16205 states and 74496 transitions. [2025-04-13 18:41:30,883 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-04-13 18:41:30,883 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:41:30,883 INFO L218 NwaCegarLoop]: 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] [2025-04-13 18:41:30,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-04-13 18:41:31,087 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:41:31,087 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:41:31,088 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:41:31,088 INFO L85 PathProgramCache]: Analyzing trace with hash 95229369, now seen corresponding path program 4 times [2025-04-13 18:41:31,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:41:31,088 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039048180] [2025-04-13 18:41:31,088 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:41:31,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:41:31,093 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 32 statements into 2 equivalence classes. [2025-04-13 18:41:31,098 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 18:41:31,098 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:41:31,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:31,173 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:41:31,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:41:31,173 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039048180] [2025-04-13 18:41:31,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039048180] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:41:31,173 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879552934] [2025-04-13 18:41:31,173 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:41:31,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:41:31,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:41:31,176 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) [2025-04-13 18:41:31,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-04-13 18:41:31,208 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 32 statements into 2 equivalence classes. [2025-04-13 18:41:31,223 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 18:41:31,223 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:41:31,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:31,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-13 18:41:31,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:41:31,319 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:41:31,319 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:41:31,403 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:41:31,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879552934] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:41:31,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:41:31,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2025-04-13 18:41:31,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373065956] [2025-04-13 18:41:31,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:41:31,404 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 18:41:31,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:41:31,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 18:41:31,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-04-13 18:41:31,405 INFO L87 Difference]: Start difference. First operand 16205 states and 74496 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:41,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:41:41,602 INFO L93 Difference]: Finished difference Result 61215 states and 272861 transitions. [2025-04-13 18:41:41,602 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2025-04-13 18:41:41,603 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2025-04-13 18:41:41,603 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:41:41,856 INFO L225 Difference]: With dead ends: 61215 [2025-04-13 18:41:41,856 INFO L226 Difference]: Without dead ends: 57985 [2025-04-13 18:41:41,878 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3012 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1705, Invalid=5777, Unknown=0, NotChecked=0, Total=7482 [2025-04-13 18:41:41,878 INFO L437 NwaCegarLoop]: 26 mSDtfsCounter, 720 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:41:41,878 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 206 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:41:41,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57985 states. [2025-04-13 18:41:46,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57985 to 30342. [2025-04-13 18:41:46,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30342 states, 30341 states have (on average 4.872482779077815) internal successors, (147836), 30341 states have internal predecessors, (147836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:46,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30342 states to 30342 states and 147836 transitions. [2025-04-13 18:41:46,590 INFO L79 Accepts]: Start accepts. Automaton has 30342 states and 147836 transitions. Word has length 32 [2025-04-13 18:41:46,591 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:41:46,591 INFO L485 AbstractCegarLoop]: Abstraction has 30342 states and 147836 transitions. [2025-04-13 18:41:46,591 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:46,591 INFO L278 IsEmpty]: Start isEmpty. Operand 30342 states and 147836 transitions. [2025-04-13 18:41:46,668 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-04-13 18:41:46,669 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:41:46,669 INFO L218 NwaCegarLoop]: 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] [2025-04-13 18:41:46,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-04-13 18:41:46,869 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-04-13 18:41:46,869 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:41:46,870 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:41:46,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1847579005, now seen corresponding path program 5 times [2025-04-13 18:41:46,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:41:46,870 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043153520] [2025-04-13 18:41:46,870 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:41:46,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:41:46,873 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-04-13 18:41:46,877 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 18:41:46,877 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:41:46,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:46,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:41:46,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:41:46,920 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043153520] [2025-04-13 18:41:46,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043153520] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:41:46,920 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619792425] [2025-04-13 18:41:46,920 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:41:46,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:41:46,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:41:46,922 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) [2025-04-13 18:41:46,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-04-13 18:41:46,955 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-04-13 18:41:46,976 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 18:41:46,976 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:41:46,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:46,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-13 18:41:46,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:41:47,058 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:41:47,059 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:41:47,117 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:41:47,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619792425] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:41:47,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:41:47,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2025-04-13 18:41:47,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152465370] [2025-04-13 18:41:47,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:41:47,118 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-13 18:41:47,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:41:47,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-13 18:41:47,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2025-04-13 18:41:47,118 INFO L87 Difference]: Start difference. First operand 30342 states and 147836 transitions. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:58,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:41:58,682 INFO L93 Difference]: Finished difference Result 61896 states and 291166 transitions. [2025-04-13 18:41:58,682 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-04-13 18:41:58,682 INFO L79 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2025-04-13 18:41:58,682 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:41:58,949 INFO L225 Difference]: With dead ends: 61896 [2025-04-13 18:41:58,950 INFO L226 Difference]: Without dead ends: 57125 [2025-04-13 18:41:58,971 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=309, Invalid=747, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 18:41:58,972 INFO L437 NwaCegarLoop]: 16 mSDtfsCounter, 474 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:41:58,972 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 101 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:41:59,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57125 states. [2025-04-13 18:42:05,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57125 to 44490. [2025-04-13 18:42:05,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44490 states, 44489 states have (on average 4.937962192901616) internal successors, (219685), 44489 states have internal predecessors, (219685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:42:05,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44490 states to 44490 states and 219685 transitions. [2025-04-13 18:42:05,971 INFO L79 Accepts]: Start accepts. Automaton has 44490 states and 219685 transitions. Word has length 32 [2025-04-13 18:42:05,971 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:42:05,971 INFO L485 AbstractCegarLoop]: Abstraction has 44490 states and 219685 transitions. [2025-04-13 18:42:05,971 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:42:05,972 INFO L278 IsEmpty]: Start isEmpty. Operand 44490 states and 219685 transitions. [2025-04-13 18:42:06,077 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-04-13 18:42:06,078 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:06,078 INFO L218 NwaCegarLoop]: 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] [2025-04-13 18:42:06,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-04-13 18:42:06,278 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-04-13 18:42:06,278 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:42:06,279 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:06,279 INFO L85 PathProgramCache]: Analyzing trace with hash 200089047, now seen corresponding path program 6 times [2025-04-13 18:42:06,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:06,279 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774072157] [2025-04-13 18:42:06,279 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:42:06,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:06,284 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 32 statements into 2 equivalence classes. [2025-04-13 18:42:06,289 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 18:42:06,289 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 18:42:06,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:06,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:42:06,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:06,351 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774072157] [2025-04-13 18:42:06,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774072157] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:42:06,351 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708374898] [2025-04-13 18:42:06,351 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:42:06,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:06,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:42:06,354 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) [2025-04-13 18:42:06,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-04-13 18:42:06,390 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 32 statements into 2 equivalence classes. [2025-04-13 18:42:06,405 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 18:42:06,405 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 18:42:06,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:06,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-13 18:42:06,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:42:06,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:42:06,517 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:42:06,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:42:06,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708374898] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:42:06,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:42:06,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2025-04-13 18:42:06,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525779877] [2025-04-13 18:42:06,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:42:06,602 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 18:42:06,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:06,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 18:42:06,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2025-04-13 18:42:06,602 INFO L87 Difference]: Start difference. First operand 44490 states and 219685 transitions. Second operand has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:42:16,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:42:16,215 INFO L93 Difference]: Finished difference Result 52183 states and 249379 transitions. [2025-04-13 18:42:16,215 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-13 18:42:16,215 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2025-04-13 18:42:16,215 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:42:16,464 INFO L225 Difference]: With dead ends: 52183 [2025-04-13 18:42:16,464 INFO L226 Difference]: Without dead ends: 49463 [2025-04-13 18:42:16,484 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:42:16,484 INFO L437 NwaCegarLoop]: 20 mSDtfsCounter, 211 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:42:16,484 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 142 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:42:16,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49463 states. [2025-04-13 18:42:23,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49463 to 43281. [2025-04-13 18:42:23,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43281 states, 43280 states have (on average 4.9094038817005545) internal successors, (212479), 43280 states have internal predecessors, (212479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:42:23,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43281 states to 43281 states and 212479 transitions. [2025-04-13 18:42:23,542 INFO L79 Accepts]: Start accepts. Automaton has 43281 states and 212479 transitions. Word has length 32 [2025-04-13 18:42:23,542 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:42:23,542 INFO L485 AbstractCegarLoop]: Abstraction has 43281 states and 212479 transitions. [2025-04-13 18:42:23,542 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:42:23,542 INFO L278 IsEmpty]: Start isEmpty. Operand 43281 states and 212479 transitions. [2025-04-13 18:42:23,661 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-04-13 18:42:23,661 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:23,661 INFO L218 NwaCegarLoop]: 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] [2025-04-13 18:42:23,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-04-13 18:42:23,862 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-04-13 18:42:23,863 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:42:23,863 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:23,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1143003687, now seen corresponding path program 7 times [2025-04-13 18:42:23,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:23,863 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136183133] [2025-04-13 18:42:23,863 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:42:23,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:23,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-04-13 18:42:23,869 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 18:42:23,869 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:42:23,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:23,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:42:23,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:23,919 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136183133] [2025-04-13 18:42:23,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136183133] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:42:23,919 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056440231] [2025-04-13 18:42:23,919 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:42:23,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:23,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:42:23,921 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) [2025-04-13 18:42:23,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-04-13 18:42:23,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-04-13 18:42:23,969 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 18:42:23,969 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:42:23,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:23,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-13 18:42:23,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:42:24,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:42:24,076 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:42:24,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:42:24,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056440231] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:42:24,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:42:24,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2025-04-13 18:42:24,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623331117] [2025-04-13 18:42:24,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:42:24,160 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-13 18:42:24,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:24,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-13 18:42:24,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2025-04-13 18:42:24,161 INFO L87 Difference]: Start difference. First operand 43281 states and 212479 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:42:48,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:42:48,135 INFO L93 Difference]: Finished difference Result 118032 states and 573282 transitions. [2025-04-13 18:42:48,135 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2025-04-13 18:42:48,135 INFO L79 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2025-04-13 18:42:48,135 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:42:48,940 INFO L225 Difference]: With dead ends: 118032 [2025-04-13 18:42:48,940 INFO L226 Difference]: Without dead ends: 109500 [2025-04-13 18:42:48,988 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2017 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1149, Invalid=4253, Unknown=0, NotChecked=0, Total=5402 [2025-04-13 18:42:48,988 INFO L437 NwaCegarLoop]: 20 mSDtfsCounter, 617 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 18:42:48,988 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 219 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 18:42:49,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109500 states. [2025-04-13 18:43:00,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109500 to 64465. [2025-04-13 18:43:00,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64465 states, 64464 states have (on average 4.943084512285927) internal successors, (318651), 64464 states have internal predecessors, (318651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:43:00,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64465 states to 64465 states and 318651 transitions. [2025-04-13 18:43:00,507 INFO L79 Accepts]: Start accepts. Automaton has 64465 states and 318651 transitions. Word has length 32 [2025-04-13 18:43:00,507 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:43:00,507 INFO L485 AbstractCegarLoop]: Abstraction has 64465 states and 318651 transitions. [2025-04-13 18:43:00,507 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:43:00,507 INFO L278 IsEmpty]: Start isEmpty. Operand 64465 states and 318651 transitions. [2025-04-13 18:43:00,663 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-04-13 18:43:00,663 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:43:00,663 INFO L218 NwaCegarLoop]: 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] [2025-04-13 18:43:00,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-04-13 18:43:00,864 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-04-13 18:43:00,864 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:43:00,864 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:43:00,864 INFO L85 PathProgramCache]: Analyzing trace with hash 14383959, now seen corresponding path program 8 times [2025-04-13 18:43:00,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:43:00,865 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236547130] [2025-04-13 18:43:00,865 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:43:00,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:43:00,868 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-04-13 18:43:00,871 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 18:43:00,871 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:43:00,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:43:00,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:43:00,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:43:00,913 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236547130] [2025-04-13 18:43:00,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236547130] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:43:00,913 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557476351] [2025-04-13 18:43:00,913 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:43:00,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:43:00,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:43:00,915 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) [2025-04-13 18:43:00,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-04-13 18:43:00,951 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-04-13 18:43:00,965 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 18:43:00,965 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:43:00,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:43:00,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-13 18:43:00,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:43:01,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:43:01,059 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:43:01,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:43:01,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557476351] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:43:01,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:43:01,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2025-04-13 18:43:01,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394401981] [2025-04-13 18:43:01,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:43:01,140 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 18:43:01,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:43:01,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 18:43:01,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2025-04-13 18:43:01,141 INFO L87 Difference]: Start difference. First operand 64465 states and 318651 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:43:38,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:43:38,231 INFO L93 Difference]: Finished difference Result 157606 states and 752238 transitions. [2025-04-13 18:43:38,232 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2025-04-13 18:43:38,232 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2025-04-13 18:43:38,232 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:43:39,326 INFO L225 Difference]: With dead ends: 157606 [2025-04-13 18:43:39,326 INFO L226 Difference]: Without dead ends: 150183 [2025-04-13 18:43:39,383 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3075 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1511, Invalid=5971, Unknown=0, NotChecked=0, Total=7482 [2025-04-13 18:43:39,384 INFO L437 NwaCegarLoop]: 20 mSDtfsCounter, 948 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:43:39,384 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 189 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:43:39,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150183 states. [2025-04-13 18:43:55,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150183 to 88861. [2025-04-13 18:43:55,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88861 states, 88860 states have (on average 5.051541751069098) internal successors, (448880), 88860 states have internal predecessors, (448880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:43:55,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88861 states to 88861 states and 448880 transitions. [2025-04-13 18:43:56,003 INFO L79 Accepts]: Start accepts. Automaton has 88861 states and 448880 transitions. Word has length 32 [2025-04-13 18:43:56,003 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:43:56,003 INFO L485 AbstractCegarLoop]: Abstraction has 88861 states and 448880 transitions. [2025-04-13 18:43:56,003 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:43:56,003 INFO L278 IsEmpty]: Start isEmpty. Operand 88861 states and 448880 transitions. [2025-04-13 18:43:56,220 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-04-13 18:43:56,220 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:43:56,221 INFO L218 NwaCegarLoop]: 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] [2025-04-13 18:43:56,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-04-13 18:43:56,421 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-04-13 18:43:56,421 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:43:56,421 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:43:56,421 INFO L85 PathProgramCache]: Analyzing trace with hash -167406415, now seen corresponding path program 9 times [2025-04-13 18:43:56,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:43:56,422 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237136436] [2025-04-13 18:43:56,422 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:43:56,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:43:56,424 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 32 statements into 2 equivalence classes. [2025-04-13 18:43:56,427 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 18:43:56,427 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:43:56,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:43:56,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:43:56,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:43:56,474 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237136436] [2025-04-13 18:43:56,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237136436] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:43:56,474 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718281634] [2025-04-13 18:43:56,475 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:43:56,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:43:56,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:43:56,476 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) [2025-04-13 18:43:56,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-04-13 18:43:56,512 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 32 statements into 2 equivalence classes. [2025-04-13 18:43:56,528 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 18:43:56,528 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:43:56,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:43:56,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-13 18:43:56,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:43:56,622 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:43:56,623 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:43:56,692 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:43:56,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718281634] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:43:56,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:43:56,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2025-04-13 18:43:56,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173729318] [2025-04-13 18:43:56,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:43:56,693 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-13 18:43:56,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:43:56,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-13 18:43:56,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2025-04-13 18:43:56,693 INFO L87 Difference]: Start difference. First operand 88861 states and 448880 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:44:29,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:44:29,070 INFO L93 Difference]: Finished difference Result 137427 states and 681628 transitions. [2025-04-13 18:44:29,070 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-04-13 18:44:29,070 INFO L79 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2025-04-13 18:44:29,070 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:44:30,141 INFO L225 Difference]: With dead ends: 137427 [2025-04-13 18:44:30,141 INFO L226 Difference]: Without dead ends: 123429 [2025-04-13 18:44:30,196 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1575 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=997, Invalid=3425, Unknown=0, NotChecked=0, Total=4422 [2025-04-13 18:44:30,197 INFO L437 NwaCegarLoop]: 24 mSDtfsCounter, 767 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 18:44:30,197 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 228 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 18:44:30,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123429 states. [2025-04-13 18:44:48,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123429 to 94590. [2025-04-13 18:44:48,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94590 states, 94589 states have (on average 5.097791497954308) internal successors, (482195), 94589 states have internal predecessors, (482195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:44:49,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94590 states to 94590 states and 482195 transitions. [2025-04-13 18:44:49,314 INFO L79 Accepts]: Start accepts. Automaton has 94590 states and 482195 transitions. Word has length 32 [2025-04-13 18:44:49,316 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:44:49,316 INFO L485 AbstractCegarLoop]: Abstraction has 94590 states and 482195 transitions. [2025-04-13 18:44:49,316 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:44:49,316 INFO L278 IsEmpty]: Start isEmpty. Operand 94590 states and 482195 transitions. [2025-04-13 18:44:49,643 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-04-13 18:44:49,644 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:44:49,644 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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] [2025-04-13 18:44:49,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-04-13 18:44:49,848 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-04-13 18:44:49,848 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:44:49,848 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:44:49,849 INFO L85 PathProgramCache]: Analyzing trace with hash 2021129811, now seen corresponding path program 10 times [2025-04-13 18:44:49,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:44:49,849 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300284451] [2025-04-13 18:44:49,849 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:44:49,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:44:49,860 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-04-13 18:44:49,899 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-04-13 18:44:49,899 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:44:49,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:50,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:44:50,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:44:50,082 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300284451] [2025-04-13 18:44:50,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300284451] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:44:50,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:44:50,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 18:44:50,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94115639] [2025-04-13 18:44:50,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:44:50,082 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 18:44:50,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:44:50,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 18:44:50,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:44:50,083 INFO L87 Difference]: Start difference. First operand 94590 states and 482195 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:45:19,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:19,618 INFO L93 Difference]: Finished difference Result 117203 states and 574781 transitions. [2025-04-13 18:45:19,619 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 18:45:19,619 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2025-04-13 18:45:19,619 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:20,576 INFO L225 Difference]: With dead ends: 117203 [2025-04-13 18:45:20,576 INFO L226 Difference]: Without dead ends: 111384 [2025-04-13 18:45:20,628 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-04-13 18:45:20,629 INFO L437 NwaCegarLoop]: 11 mSDtfsCounter, 97 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:20,629 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 35 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 18:45:20,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111384 states. [2025-04-13 18:45:39,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111384 to 92852. [2025-04-13 18:45:39,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92852 states, 92851 states have (on average 5.098006483505832) internal successors, (473355), 92851 states have internal predecessors, (473355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:45:40,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92852 states to 92852 states and 473355 transitions. [2025-04-13 18:45:40,380 INFO L79 Accepts]: Start accepts. Automaton has 92852 states and 473355 transitions. Word has length 34 [2025-04-13 18:45:40,381 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:40,381 INFO L485 AbstractCegarLoop]: Abstraction has 92852 states and 473355 transitions. [2025-04-13 18:45:40,381 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:45:40,381 INFO L278 IsEmpty]: Start isEmpty. Operand 92852 states and 473355 transitions. [2025-04-13 18:45:40,689 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-04-13 18:45:40,689 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:40,689 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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] [2025-04-13 18:45:40,689 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-04-13 18:45:40,689 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:45:40,690 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:40,690 INFO L85 PathProgramCache]: Analyzing trace with hash 166299033, now seen corresponding path program 11 times [2025-04-13 18:45:40,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:40,690 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151556563] [2025-04-13 18:45:40,690 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:45:40,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:40,709 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 34 statements into 3 equivalence classes. [2025-04-13 18:45:40,745 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 34 of 34 statements. [2025-04-13 18:45:40,746 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:45:40,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:40,971 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:45:40,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:40,971 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151556563] [2025-04-13 18:45:40,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151556563] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:40,971 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603466125] [2025-04-13 18:45:40,971 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:45:40,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:40,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:40,974 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) [2025-04-13 18:45:40,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-04-13 18:45:41,029 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 34 statements into 3 equivalence classes. [2025-04-13 18:45:41,052 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 34 of 34 statements. [2025-04-13 18:45:41,052 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:45:41,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:41,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-13 18:45:41,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:41,207 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:45:41,207 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:41,305 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:45:41,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603466125] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:41,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:41,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2025-04-13 18:45:41,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498931064] [2025-04-13 18:45:41,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:41,306 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-13 18:45:41,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:41,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-13 18:45:41,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2025-04-13 18:45:41,306 INFO L87 Difference]: Start difference. First operand 92852 states and 473355 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:47:06,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:47:06,450 INFO L93 Difference]: Finished difference Result 285256 states and 1421395 transitions. [2025-04-13 18:47:06,451 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2025-04-13 18:47:06,451 INFO L79 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2025-04-13 18:47:06,452 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:47:09,818 INFO L225 Difference]: With dead ends: 285256 [2025-04-13 18:47:09,819 INFO L226 Difference]: Without dead ends: 270640 [2025-04-13 18:47:09,989 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2789 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1539, Invalid=5601, Unknown=0, NotChecked=0, Total=7140 [2025-04-13 18:47:09,990 INFO L437 NwaCegarLoop]: 23 mSDtfsCounter, 630 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:47:09,990 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 264 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 18:47:10,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270640 states. [2025-04-13 18:47:43,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270640 to 131193. [2025-04-13 18:47:43,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131193 states, 131192 states have (on average 5.133796268065126) internal successors, (673513), 131192 states have internal predecessors, (673513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:47:44,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131193 states to 131193 states and 673513 transitions. [2025-04-13 18:47:45,004 INFO L79 Accepts]: Start accepts. Automaton has 131193 states and 673513 transitions. Word has length 34 [2025-04-13 18:47:45,004 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:47:45,004 INFO L485 AbstractCegarLoop]: Abstraction has 131193 states and 673513 transitions. [2025-04-13 18:47:45,004 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:47:45,004 INFO L278 IsEmpty]: Start isEmpty. Operand 131193 states and 673513 transitions. [2025-04-13 18:47:45,382 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-04-13 18:47:45,382 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:47:45,382 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2025-04-13 18:47:45,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-04-13 18:47:45,587 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:47:45,587 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:47:45,588 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:47:45,588 INFO L85 PathProgramCache]: Analyzing trace with hash 290953525, now seen corresponding path program 12 times [2025-04-13 18:47:45,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:47:45,588 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349389108] [2025-04-13 18:47:45,588 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:47:45,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:47:45,594 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 36 statements into 2 equivalence classes. [2025-04-13 18:47:45,604 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 18:47:45,604 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 18:47:45,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:47:45,683 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:47:45,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:47:45,683 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349389108] [2025-04-13 18:47:45,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349389108] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:47:45,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:47:45,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-13 18:47:45,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074404267] [2025-04-13 18:47:45,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:47:45,683 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 18:47:45,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:47:45,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 18:47:45,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-04-13 18:47:45,684 INFO L87 Difference]: Start difference. First operand 131193 states and 673513 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:48:33,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:48:33,695 INFO L93 Difference]: Finished difference Result 156356 states and 773753 transitions. [2025-04-13 18:48:33,696 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 18:48:33,696 INFO L79 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 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 36 [2025-04-13 18:48:33,696 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:48:35,091 INFO L225 Difference]: With dead ends: 156356 [2025-04-13 18:48:35,092 INFO L226 Difference]: Without dead ends: 151159 [2025-04-13 18:48:35,146 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-04-13 18:48:35,147 INFO L437 NwaCegarLoop]: 12 mSDtfsCounter, 159 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:48:35,147 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 50 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:48:35,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151159 states. [2025-04-13 18:49:06,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151159 to 131781. [2025-04-13 18:49:06,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131781 states, 131780 states have (on average 5.123448171194415) internal successors, (675168), 131780 states have internal predecessors, (675168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:49:07,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131781 states to 131781 states and 675168 transitions. [2025-04-13 18:49:08,076 INFO L79 Accepts]: Start accepts. Automaton has 131781 states and 675168 transitions. Word has length 36 [2025-04-13 18:49:08,076 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:49:08,082 INFO L485 AbstractCegarLoop]: Abstraction has 131781 states and 675168 transitions. [2025-04-13 18:49:08,083 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:49:08,083 INFO L278 IsEmpty]: Start isEmpty. Operand 131781 states and 675168 transitions. [2025-04-13 18:49:08,564 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-04-13 18:49:08,564 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:49:08,564 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2025-04-13 18:49:08,564 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-04-13 18:49:08,565 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:49:08,566 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:49:08,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1086155925, now seen corresponding path program 13 times [2025-04-13 18:49:08,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:49:08,567 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522801352] [2025-04-13 18:49:08,567 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:49:08,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:49:08,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-04-13 18:49:08,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 18:49:08,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:49:08,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:49:08,724 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:49:08,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:49:08,724 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522801352] [2025-04-13 18:49:08,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522801352] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:49:08,724 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448798219] [2025-04-13 18:49:08,724 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:49:08,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:49:08,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:49:08,727 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) [2025-04-13 18:49:08,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-04-13 18:49:08,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-04-13 18:49:08,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 18:49:08,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:49:08,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:49:08,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:49:08,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:49:08,968 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-04-13 18:49:08,968 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:49:09,070 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-04-13 18:49:09,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448798219] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:49:09,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:49:09,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 13 [2025-04-13 18:49:09,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523458965] [2025-04-13 18:49:09,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:49:09,071 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-13 18:49:09,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:49:09,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-13 18:49:09,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2025-04-13 18:49:09,071 INFO L87 Difference]: Start difference. First operand 131781 states and 675168 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:09,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:09,237 INFO L93 Difference]: Finished difference Result 187626 states and 953128 transitions. [2025-04-13 18:50:09,238 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 18:50:09,238 INFO L79 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2025-04-13 18:50:09,238 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:11,471 INFO L225 Difference]: With dead ends: 187626 [2025-04-13 18:50:11,472 INFO L226 Difference]: Without dead ends: 182217 [2025-04-13 18:50:11,534 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:50:11,537 INFO L437 NwaCegarLoop]: 20 mSDtfsCounter, 297 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:11,537 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 136 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:50:11,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182217 states. [2025-04-13 18:50:50,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182217 to 155487. [2025-04-13 18:50:50,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155487 states, 155486 states have (on average 5.1811545734021065) internal successors, (805597), 155486 states have internal predecessors, (805597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:51,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155487 states to 155487 states and 805597 transitions. [2025-04-13 18:50:51,777 INFO L79 Accepts]: Start accepts. Automaton has 155487 states and 805597 transitions. Word has length 36 [2025-04-13 18:50:51,778 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:50:51,778 INFO L485 AbstractCegarLoop]: Abstraction has 155487 states and 805597 transitions. [2025-04-13 18:50:51,778 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:51,778 INFO L278 IsEmpty]: Start isEmpty. Operand 155487 states and 805597 transitions. [2025-04-13 18:50:52,289 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-04-13 18:50:52,289 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:52,289 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2025-04-13 18:50:52,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-04-13 18:50:52,493 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:52,493 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 18:50:52,498 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:52,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1009659407, now seen corresponding path program 14 times [2025-04-13 18:50:52,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:52,498 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996450669] [2025-04-13 18:50:52,498 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:50:52,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:52,507 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-04-13 18:50:52,519 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 18:50:52,519 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:50:52,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:50:52,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:52,615 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996450669] [2025-04-13 18:50:52,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996450669] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:50:52,615 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946189966] [2025-04-13 18:50:52,615 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:50:52,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:52,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:50:52,619 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) [2025-04-13 18:50:52,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-04-13 18:50:52,673 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-04-13 18:50:52,692 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 18:50:52,692 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:50:52,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:52,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-13 18:50:52,694 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:50:52,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:50:52,877 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:50:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:50:52,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946189966] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:50:52,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:50:52,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2025-04-13 18:50:52,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122438024] [2025-04-13 18:50:52,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:50:52,978 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 18:50:52,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:52,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 18:50:52,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2025-04-13 18:50:52,979 INFO L87 Difference]: Start difference. First operand 155487 states and 805597 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:52:12,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:52:12,300 INFO L93 Difference]: Finished difference Result 250059 states and 1268315 transitions. [2025-04-13 18:52:12,300 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 18:52:12,300 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2025-04-13 18:52:12,300 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:52:14,694 INFO L225 Difference]: With dead ends: 250059 [2025-04-13 18:52:14,695 INFO L226 Difference]: Without dead ends: 241831 [2025-04-13 18:52:14,790 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=323, Unknown=0, NotChecked=0, Total=506 [2025-04-13 18:52:14,793 INFO L437 NwaCegarLoop]: 19 mSDtfsCounter, 334 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:52:14,793 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 124 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:52:15,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241831 states. Received shutdown request... [2025-04-13 18:52:21,191 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 18:52:21,191 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 18:52:22,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-04-13 18:52:22,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown