/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/test-context1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 18:50:01,293 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 18:50:01,344 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 18:50:01,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 18:50:01,348 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 18:50:01,362 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 18:50:01,363 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 18:50:01,363 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 18:50:01,363 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 18:50:01,363 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 18:50:01,363 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 18:50:01,363 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 18:50:01,364 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 18:50:01,364 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 18:50:01,364 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 18:50:01,364 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 18:50:01,364 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 18:50:01,364 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 18:50:01,364 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 18:50:01,364 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 18:50:01,364 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 18:50:01,364 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 18:50:01,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 18:50:01,364 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 18:50:01,365 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 18:50:01,365 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 18:50:01,365 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 18:50:01,365 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 18:50:01,365 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 18:50:01,365 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 18:50:01,365 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 18:50:01,365 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 18:50:01,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:50:01,365 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 18:50:01,365 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 18:50:01,365 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 18:50:01,365 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 18:50:01,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:50:01,365 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 18:50:01,365 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 18:50:01,365 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 18:50:01,366 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 18:50:01,366 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 18:50:01,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 18:50:01,366 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 18:50:01,366 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 18:50:01,366 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 18:50:01,366 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 18:50:01,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 18:50:01,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 18:50:01,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 18:50:01,582 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 18:50:01,584 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 18:50:01,585 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-context1.wvr.c [2025-04-13 18:50:02,862 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cba3a682c/5bd634e2564443f1835491a26b65c341/FLAG0ae405c84 [2025-04-13 18:50:03,084 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 18:50:03,085 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-context1.wvr.c [2025-04-13 18:50:03,095 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cba3a682c/5bd634e2564443f1835491a26b65c341/FLAG0ae405c84 [2025-04-13 18:50:03,911 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cba3a682c/5bd634e2564443f1835491a26b65c341 [2025-04-13 18:50:03,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 18:50:03,914 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 18:50:03,915 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 18:50:03,915 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 18:50:03,918 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 18:50:03,918 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 06:50:03" (1/1) ... [2025-04-13 18:50:03,919 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17fec0b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:50:03, skipping insertion in model container [2025-04-13 18:50:03,919 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 06:50:03" (1/1) ... [2025-04-13 18:50:03,929 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 18:50:04,063 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/test-context1.wvr.c[2459,2472] [2025-04-13 18:50:04,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 18:50:04,075 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 18:50:04,094 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/test-context1.wvr.c[2459,2472] [2025-04-13 18:50:04,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 18:50:04,108 INFO L204 MainTranslator]: Completed translation [2025-04-13 18:50:04,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:50:04 WrapperNode [2025-04-13 18:50:04,109 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 18:50:04,110 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 18:50:04,110 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 18:50:04,110 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 18:50:04,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:50:04" (1/1) ... [2025-04-13 18:50:04,120 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:50:04" (1/1) ... [2025-04-13 18:50:04,133 INFO L138 Inliner]: procedures = 23, calls = 24, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 122 [2025-04-13 18:50:04,134 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 18:50:04,134 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 18:50:04,134 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 18:50:04,134 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 18:50:04,141 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:50:04" (1/1) ... [2025-04-13 18:50:04,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:50:04" (1/1) ... [2025-04-13 18:50:04,143 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:50:04" (1/1) ... [2025-04-13 18:50:04,153 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-04-13 18:50:04,153 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:50:04" (1/1) ... [2025-04-13 18:50:04,153 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:50:04" (1/1) ... [2025-04-13 18:50:04,157 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:50:04" (1/1) ... [2025-04-13 18:50:04,157 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:50:04" (1/1) ... [2025-04-13 18:50:04,159 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:50:04" (1/1) ... [2025-04-13 18:50:04,160 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:50:04" (1/1) ... [2025-04-13 18:50:04,161 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:50:04" (1/1) ... [2025-04-13 18:50:04,163 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 18:50:04,164 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 18:50:04,164 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 18:50:04,164 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 18:50:04,164 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:50:04" (1/1) ... [2025-04-13 18:50:04,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:50:04,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:50:04,187 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 18:50:04,190 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 18:50:04,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 18:50:04,202 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 18:50:04,203 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 18:50:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 18:50:04,203 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 18:50:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 18:50:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 18:50:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 18:50:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 18:50:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 18:50:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 18:50:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-13 18:50:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 18:50:04,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 18:50:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 18:50:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 18:50:04,204 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 18:50:04,276 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 18:50:04,278 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 18:50:04,476 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 18:50:04,476 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 18:50:04,476 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 18:50:04,661 INFO L313 CfgBuilder]: Removed 2 assume(true) statements. [2025-04-13 18:50:04,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 06:50:04 BoogieIcfgContainer [2025-04-13 18:50:04,662 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 18:50:04,663 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 18:50:04,663 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 18:50:04,667 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 18:50:04,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 06:50:03" (1/3) ... [2025-04-13 18:50:04,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4503c657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 06:50:04, skipping insertion in model container [2025-04-13 18:50:04,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:50:04" (2/3) ... [2025-04-13 18:50:04,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4503c657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 06:50:04, skipping insertion in model container [2025-04-13 18:50:04,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 06:50:04" (3/3) ... [2025-04-13 18:50:04,668 INFO L128 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2025-04-13 18:50:04,677 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 18:50:04,678 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-context1.wvr.c that has 3 procedures, 19 locations, 19 edges, 1 initial locations, 3 loop locations, and 1 error locations. [2025-04-13 18:50:04,678 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 18:50:04,716 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 18:50:04,740 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 21 transitions, 56 flow [2025-04-13 18:50:04,751 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 49 states, 48 states have (on average 2.2916666666666665) internal successors, (110), 48 states have internal predecessors, (110), 0 states have call successors, (0), 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 18:50:04,770 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 18:50:04,779 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;@ac42095, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 18:50:04,780 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 18:50:04,781 INFO L278 IsEmpty]: Start isEmpty. Operand has 49 states, 48 states have (on average 2.2916666666666665) internal successors, (110), 48 states have internal predecessors, (110), 0 states have call successors, (0), 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 18:50:04,785 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-13 18:50:04,785 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:04,785 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:50:04,786 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:50:04,790 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:04,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1029538203, now seen corresponding path program 1 times [2025-04-13 18:50:04,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:04,795 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816810168] [2025-04-13 18:50:04,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:50:04,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:04,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-13 18:50:04,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 18:50:04,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:50:04,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:04,981 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 18:50:04,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:04,981 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816810168] [2025-04-13 18:50:04,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816810168] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:50:04,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:50:04,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 18:50:04,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295952916] [2025-04-13 18:50:04,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:50:04,987 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 18:50:04,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:04,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 18:50:05,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 18:50:05,003 INFO L87 Difference]: Start difference. First operand has 49 states, 48 states have (on average 2.2916666666666665) internal successors, (110), 48 states have internal predecessors, (110), 0 states have call successors, (0), 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 18:50:05,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:05,061 INFO L93 Difference]: Finished difference Result 78 states and 178 transitions. [2025-04-13 18:50:05,063 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 18:50:05,063 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2025-04-13 18:50:05,064 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:05,069 INFO L225 Difference]: With dead ends: 78 [2025-04-13 18:50:05,069 INFO L226 Difference]: Without dead ends: 67 [2025-04-13 18:50:05,071 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 18:50:05,074 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:05,074 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 18:50:05,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-04-13 18:50:05,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2025-04-13 18:50:05,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.3157894736842106) internal successors, (132), 57 states have internal predecessors, (132), 0 states have call successors, (0), 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 18:50:05,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 132 transitions. [2025-04-13 18:50:05,108 INFO L79 Accepts]: Start accepts. Automaton has 58 states and 132 transitions. Word has length 13 [2025-04-13 18:50:05,108 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:50:05,109 INFO L485 AbstractCegarLoop]: Abstraction has 58 states and 132 transitions. [2025-04-13 18:50:05,109 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 18:50:05,109 INFO L278 IsEmpty]: Start isEmpty. Operand 58 states and 132 transitions. [2025-04-13 18:50:05,110 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 18:50:05,110 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:05,110 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:50:05,111 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 18:50:05,111 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:50:05,111 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:05,112 INFO L85 PathProgramCache]: Analyzing trace with hash -253787111, now seen corresponding path program 1 times [2025-04-13 18:50:05,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:05,112 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739801279] [2025-04-13 18:50:05,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:50:05,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:05,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 18:50:05,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 18:50:05,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:50:05,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:05,205 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 18:50:05,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:05,206 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739801279] [2025-04-13 18:50:05,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739801279] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:50:05,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:50:05,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 18:50:05,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478270063] [2025-04-13 18:50:05,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:50:05,206 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 18:50:05,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:05,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 18:50:05,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 18:50:05,207 INFO L87 Difference]: Start difference. First operand 58 states and 132 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:05,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:05,254 INFO L93 Difference]: Finished difference Result 110 states and 253 transitions. [2025-04-13 18:50:05,255 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 18:50:05,255 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-04-13 18:50:05,255 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:05,255 INFO L225 Difference]: With dead ends: 110 [2025-04-13 18:50:05,255 INFO L226 Difference]: Without dead ends: 70 [2025-04-13 18:50:05,256 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 18:50:05,256 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:05,256 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 18:50:05,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2025-04-13 18:50:05,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2025-04-13 18:50:05,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.2318840579710146) internal successors, (154), 69 states have internal predecessors, (154), 0 states have call successors, (0), 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 18:50:05,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 154 transitions. [2025-04-13 18:50:05,265 INFO L79 Accepts]: Start accepts. Automaton has 70 states and 154 transitions. Word has length 15 [2025-04-13 18:50:05,265 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:50:05,265 INFO L485 AbstractCegarLoop]: Abstraction has 70 states and 154 transitions. [2025-04-13 18:50:05,265 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:05,265 INFO L278 IsEmpty]: Start isEmpty. Operand 70 states and 154 transitions. [2025-04-13 18:50:05,265 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:50:05,266 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:05,266 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:50:05,266 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 18:50:05,266 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:50:05,266 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:05,266 INFO L85 PathProgramCache]: Analyzing trace with hash -2018494949, now seen corresponding path program 1 times [2025-04-13 18:50:05,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:05,266 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713018080] [2025-04-13 18:50:05,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:50:05,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:05,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 18:50:05,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:50:05,289 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:50:05,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:05,480 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 18:50:05,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:05,480 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713018080] [2025-04-13 18:50:05,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713018080] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:50:05,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:50:05,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 18:50:05,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924626022] [2025-04-13 18:50:05,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:50:05,481 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 18:50:05,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:05,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 18:50:05,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:50:05,482 INFO L87 Difference]: Start difference. First operand 70 states and 154 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 18:50:05,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:05,539 INFO L93 Difference]: Finished difference Result 139 states and 307 transitions. [2025-04-13 18:50:05,539 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 18:50:05,539 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2025-04-13 18:50:05,540 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:05,540 INFO L225 Difference]: With dead ends: 139 [2025-04-13 18:50:05,540 INFO L226 Difference]: Without dead ends: 71 [2025-04-13 18:50:05,541 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:50:05,541 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:05,541 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 18:50:05,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-04-13 18:50:05,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2025-04-13 18:50:05,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 2.2142857142857144) internal successors, (155), 70 states have internal predecessors, (155), 0 states have call successors, (0), 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 18:50:05,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 155 transitions. [2025-04-13 18:50:05,550 INFO L79 Accepts]: Start accepts. Automaton has 71 states and 155 transitions. Word has length 17 [2025-04-13 18:50:05,550 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:50:05,551 INFO L485 AbstractCegarLoop]: Abstraction has 71 states and 155 transitions. [2025-04-13 18:50:05,551 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 18:50:05,551 INFO L278 IsEmpty]: Start isEmpty. Operand 71 states and 155 transitions. [2025-04-13 18:50:05,551 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:50:05,551 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:05,551 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:50:05,551 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 18:50:05,551 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:50:05,552 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:05,552 INFO L85 PathProgramCache]: Analyzing trace with hash -719189441, now seen corresponding path program 1 times [2025-04-13 18:50:05,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:05,552 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317177539] [2025-04-13 18:50:05,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:50:05,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:05,564 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 18:50:05,579 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:50:05,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:50:05,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:05,799 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 18:50:05,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:05,799 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317177539] [2025-04-13 18:50:05,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317177539] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:50:05,800 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639958565] [2025-04-13 18:50:05,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:50:05,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:05,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:50:05,802 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 18:50:05,803 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 18:50:05,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 18:50:05,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:50:05,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:50:05,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:05,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:50:05,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:50:05,970 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 18:50:05,970 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:50:06,010 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:50:06,012 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2025-04-13 18:50:06,033 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 18:50:06,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639958565] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:50:06,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:50:06,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2025-04-13 18:50:06,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518765942] [2025-04-13 18:50:06,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:50:06,034 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-13 18:50:06,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:06,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-13 18:50:06,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-04-13 18:50:06,034 INFO L87 Difference]: Start difference. First operand 71 states and 155 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:06,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:06,144 INFO L93 Difference]: Finished difference Result 101 states and 225 transitions. [2025-04-13 18:50:06,145 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 18:50:06,145 INFO L79 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:50:06,145 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:06,146 INFO L225 Difference]: With dead ends: 101 [2025-04-13 18:50:06,146 INFO L226 Difference]: Without dead ends: 92 [2025-04-13 18:50:06,146 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2025-04-13 18:50:06,146 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 39 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:06,146 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 12 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:50:06,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2025-04-13 18:50:06,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 85. [2025-04-13 18:50:06,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 2.25) internal successors, (189), 84 states have internal predecessors, (189), 0 states have call successors, (0), 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 18:50:06,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 189 transitions. [2025-04-13 18:50:06,159 INFO L79 Accepts]: Start accepts. Automaton has 85 states and 189 transitions. Word has length 18 [2025-04-13 18:50:06,160 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:50:06,160 INFO L485 AbstractCegarLoop]: Abstraction has 85 states and 189 transitions. [2025-04-13 18:50:06,160 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:06,160 INFO L278 IsEmpty]: Start isEmpty. Operand 85 states and 189 transitions. [2025-04-13 18:50:06,161 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 18:50:06,161 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:06,161 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:50:06,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-04-13 18:50:06,365 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:06,365 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:50:06,365 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:06,365 INFO L85 PathProgramCache]: Analyzing trace with hash 518367711, now seen corresponding path program 2 times [2025-04-13 18:50:06,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:06,365 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105618415] [2025-04-13 18:50:06,366 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:50:06,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:06,373 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 18:50:06,384 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 18:50:06,384 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:50:06,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:06,495 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:50:06,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:06,495 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105618415] [2025-04-13 18:50:06,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105618415] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:50:06,496 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613199772] [2025-04-13 18:50:06,496 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:50:06,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:06,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:50:06,499 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 18:50:06,500 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 18:50:06,544 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 18:50:06,562 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 18:50:06,562 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:50:06,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:06,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:50:06,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:50:06,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:50:06,652 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:50:06,759 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:50:06,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613199772] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:50:06,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:50:06,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2025-04-13 18:50:06,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153617165] [2025-04-13 18:50:06,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:50:06,759 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-13 18:50:06,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:06,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-13 18:50:06,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2025-04-13 18:50:06,760 INFO L87 Difference]: Start difference. First operand 85 states and 189 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:06,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:06,859 INFO L93 Difference]: Finished difference Result 175 states and 393 transitions. [2025-04-13 18:50:06,859 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 18:50:06,859 INFO L79 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-04-13 18:50:06,859 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:06,860 INFO L225 Difference]: With dead ends: 175 [2025-04-13 18:50:06,860 INFO L226 Difference]: Without dead ends: 86 [2025-04-13 18:50:06,861 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2025-04-13 18:50:06,861 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 22 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:06,861 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 14 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:50:06,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2025-04-13 18:50:06,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2025-04-13 18:50:06,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.235294117647059) internal successors, (190), 85 states have internal predecessors, (190), 0 states have call successors, (0), 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 18:50:06,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 190 transitions. [2025-04-13 18:50:06,871 INFO L79 Accepts]: Start accepts. Automaton has 86 states and 190 transitions. Word has length 20 [2025-04-13 18:50:06,871 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:50:06,871 INFO L485 AbstractCegarLoop]: Abstraction has 86 states and 190 transitions. [2025-04-13 18:50:06,872 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:06,872 INFO L278 IsEmpty]: Start isEmpty. Operand 86 states and 190 transitions. [2025-04-13 18:50:06,872 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:50:06,872 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:06,872 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:50:06,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-04-13 18:50:07,072 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:07,073 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:50:07,073 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:07,073 INFO L85 PathProgramCache]: Analyzing trace with hash 856977787, now seen corresponding path program 3 times [2025-04-13 18:50:07,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:07,073 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172281714] [2025-04-13 18:50:07,073 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:50:07,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:07,081 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:50:07,098 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:50:07,098 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:50:07,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:07,150 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:50:07,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:07,150 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172281714] [2025-04-13 18:50:07,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172281714] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:50:07,150 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872489522] [2025-04-13 18:50:07,150 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:50:07,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:07,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:50:07,152 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 18:50:07,154 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 18:50:07,198 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:50:07,219 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:50:07,219 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:50:07,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:07,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-13 18:50:07,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:50:07,243 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 18:50:07,243 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:50:07,266 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 18:50:07,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872489522] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:50:07,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:50:07,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 4 [2025-04-13 18:50:07,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874508403] [2025-04-13 18:50:07,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:50:07,267 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 18:50:07,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:07,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 18:50:07,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:50:07,267 INFO L87 Difference]: Start difference. First operand 86 states and 190 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 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 18:50:07,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:07,313 INFO L93 Difference]: Finished difference Result 196 states and 446 transitions. [2025-04-13 18:50:07,314 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 18:50:07,314 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 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 21 [2025-04-13 18:50:07,314 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:07,315 INFO L225 Difference]: With dead ends: 196 [2025-04-13 18:50:07,315 INFO L226 Difference]: Without dead ends: 156 [2025-04-13 18:50:07,315 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:50:07,316 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 27 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:07,316 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 4 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 18:50:07,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2025-04-13 18:50:07,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 138. [2025-04-13 18:50:07,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 2.3576642335766422) internal successors, (323), 137 states have internal predecessors, (323), 0 states have call successors, (0), 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 18:50:07,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 323 transitions. [2025-04-13 18:50:07,327 INFO L79 Accepts]: Start accepts. Automaton has 138 states and 323 transitions. Word has length 21 [2025-04-13 18:50:07,327 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:50:07,327 INFO L485 AbstractCegarLoop]: Abstraction has 138 states and 323 transitions. [2025-04-13 18:50:07,327 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 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 18:50:07,327 INFO L278 IsEmpty]: Start isEmpty. Operand 138 states and 323 transitions. [2025-04-13 18:50:07,328 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-13 18:50:07,328 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:07,328 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:50:07,335 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 18:50:07,532 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:07,532 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:50:07,532 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:07,532 INFO L85 PathProgramCache]: Analyzing trace with hash -308609253, now seen corresponding path program 4 times [2025-04-13 18:50:07,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:07,533 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291521773] [2025-04-13 18:50:07,533 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:50:07,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:07,540 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-04-13 18:50:07,546 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:50:07,546 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:50:07,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:07,631 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-04-13 18:50:07,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:07,631 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291521773] [2025-04-13 18:50:07,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291521773] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:50:07,631 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126822976] [2025-04-13 18:50:07,631 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:50:07,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:07,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:50:07,634 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 18:50:07,634 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 18:50:07,678 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-04-13 18:50:07,702 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:50:07,702 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:50:07,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:07,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:50:07,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:50:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:50:07,763 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:50:07,777 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:50:07,777 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2025-04-13 18:50:07,812 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:50:07,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126822976] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:50:07,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:50:07,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 6 [2025-04-13 18:50:07,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765982361] [2025-04-13 18:50:07,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:50:07,814 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-13 18:50:07,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:07,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-13 18:50:07,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-04-13 18:50:07,815 INFO L87 Difference]: Start difference. First operand 138 states and 323 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:07,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:07,933 INFO L93 Difference]: Finished difference Result 206 states and 470 transitions. [2025-04-13 18:50:07,934 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 18:50:07,934 INFO L79 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-04-13 18:50:07,934 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:07,935 INFO L225 Difference]: With dead ends: 206 [2025-04-13 18:50:07,935 INFO L226 Difference]: Without dead ends: 161 [2025-04-13 18:50:07,936 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-04-13 18:50:07,936 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 81 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:07,936 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 9 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:50:07,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2025-04-13 18:50:07,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 102. [2025-04-13 18:50:07,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.257425742574257) internal successors, (228), 101 states have internal predecessors, (228), 0 states have call successors, (0), 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 18:50:07,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 228 transitions. [2025-04-13 18:50:07,946 INFO L79 Accepts]: Start accepts. Automaton has 102 states and 228 transitions. Word has length 23 [2025-04-13 18:50:07,946 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:50:07,946 INFO L485 AbstractCegarLoop]: Abstraction has 102 states and 228 transitions. [2025-04-13 18:50:07,946 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:07,946 INFO L278 IsEmpty]: Start isEmpty. Operand 102 states and 228 transitions. [2025-04-13 18:50:07,947 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-13 18:50:07,947 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:07,947 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:50:07,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-04-13 18:50:08,149 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:08,149 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:50:08,149 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:08,149 INFO L85 PathProgramCache]: Analyzing trace with hash -2096545735, now seen corresponding path program 5 times [2025-04-13 18:50:08,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:08,150 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800206577] [2025-04-13 18:50:08,150 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:50:08,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:08,157 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 3 equivalence classes. [2025-04-13 18:50:08,170 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:50:08,170 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:50:08,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:08,467 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:50:08,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:08,467 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800206577] [2025-04-13 18:50:08,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800206577] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:50:08,467 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473065313] [2025-04-13 18:50:08,467 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:50:08,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:08,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:50:08,469 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 18:50:08,471 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 18:50:08,510 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 3 equivalence classes. [2025-04-13 18:50:08,527 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:50:08,527 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:50:08,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:08,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 18:50:08,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:50:08,610 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:50:08,611 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:50:08,640 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:50:08,640 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2025-04-13 18:50:08,695 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:50:08,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473065313] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:50:08,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:50:08,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 14 [2025-04-13 18:50:08,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123441867] [2025-04-13 18:50:08,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:50:08,696 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:50:08,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:08,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:50:08,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:50:08,697 INFO L87 Difference]: Start difference. First operand 102 states and 228 transitions. Second operand has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:09,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:09,017 INFO L93 Difference]: Finished difference Result 206 states and 472 transitions. [2025-04-13 18:50:09,018 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-13 18:50:09,018 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-04-13 18:50:09,018 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:09,019 INFO L225 Difference]: With dead ends: 206 [2025-04-13 18:50:09,019 INFO L226 Difference]: Without dead ends: 197 [2025-04-13 18:50:09,019 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:50:09,020 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 101 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:09,020 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 36 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:50:09,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2025-04-13 18:50:09,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 116. [2025-04-13 18:50:09,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.2782608695652176) internal successors, (262), 115 states have internal predecessors, (262), 0 states have call successors, (0), 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 18:50:09,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 262 transitions. [2025-04-13 18:50:09,030 INFO L79 Accepts]: Start accepts. Automaton has 116 states and 262 transitions. Word has length 23 [2025-04-13 18:50:09,033 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:50:09,033 INFO L485 AbstractCegarLoop]: Abstraction has 116 states and 262 transitions. [2025-04-13 18:50:09,033 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:09,033 INFO L278 IsEmpty]: Start isEmpty. Operand 116 states and 262 transitions. [2025-04-13 18:50:09,033 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 18:50:09,034 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:09,034 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:50:09,043 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 18:50:09,234 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:09,234 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:50:09,235 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:09,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1349441497, now seen corresponding path program 6 times [2025-04-13 18:50:09,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:09,235 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579115582] [2025-04-13 18:50:09,235 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:50:09,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:09,243 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 25 statements into 3 equivalence classes. [2025-04-13 18:50:09,267 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:50:09,267 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:50:09,267 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:09,388 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 18:50:09,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:09,388 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579115582] [2025-04-13 18:50:09,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579115582] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:50:09,388 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932143770] [2025-04-13 18:50:09,388 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:50:09,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:09,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:50:09,390 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 18:50:09,392 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 18:50:09,433 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 25 statements into 3 equivalence classes. [2025-04-13 18:50:09,453 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:50:09,453 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:50:09,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:09,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:50:09,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:50:09,577 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 18:50:09,577 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:50:09,711 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 18:50:09,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932143770] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:50:09,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:50:09,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2025-04-13 18:50:09,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523253322] [2025-04-13 18:50:09,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:50:09,712 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 18:50:09,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:09,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 18:50:09,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:50:09,713 INFO L87 Difference]: Start difference. First operand 116 states and 262 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:09,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:09,839 INFO L93 Difference]: Finished difference Result 361 states and 833 transitions. [2025-04-13 18:50:09,840 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 18:50:09,840 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-04-13 18:50:09,840 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:09,841 INFO L225 Difference]: With dead ends: 361 [2025-04-13 18:50:09,841 INFO L226 Difference]: Without dead ends: 117 [2025-04-13 18:50:09,841 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:50:09,842 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 31 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:09,842 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 18 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:50:09,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-04-13 18:50:09,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2025-04-13 18:50:09,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 2.2672413793103448) internal successors, (263), 116 states have internal predecessors, (263), 0 states have call successors, (0), 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 18:50:09,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 263 transitions. [2025-04-13 18:50:09,852 INFO L79 Accepts]: Start accepts. Automaton has 117 states and 263 transitions. Word has length 25 [2025-04-13 18:50:09,852 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:50:09,852 INFO L485 AbstractCegarLoop]: Abstraction has 117 states and 263 transitions. [2025-04-13 18:50:09,852 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:09,852 INFO L278 IsEmpty]: Start isEmpty. Operand 117 states and 263 transitions. [2025-04-13 18:50:09,856 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:50:09,856 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:09,856 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:50:09,862 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 18:50:10,056 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:10,057 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:50:10,057 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:10,057 INFO L85 PathProgramCache]: Analyzing trace with hash 509601729, now seen corresponding path program 7 times [2025-04-13 18:50:10,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:10,057 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501456804] [2025-04-13 18:50:10,057 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:50:10,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:10,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-13 18:50:10,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:50:10,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:50:10,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-04-13 18:50:10,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:10,144 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501456804] [2025-04-13 18:50:10,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501456804] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:50:10,144 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615495794] [2025-04-13 18:50:10,144 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:50:10,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:10,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:50:10,147 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 18:50:10,148 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 18:50:10,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-13 18:50:10,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:50:10,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:50:10,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:10,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 18:50:10,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:50:10,241 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-04-13 18:50:10,241 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:50:10,270 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-04-13 18:50:10,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615495794] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:50:10,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:50:10,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2025-04-13 18:50:10,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271347776] [2025-04-13 18:50:10,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:50:10,271 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 18:50:10,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:10,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 18:50:10,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-04-13 18:50:10,272 INFO L87 Difference]: Start difference. First operand 117 states and 263 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 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 18:50:10,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:10,344 INFO L93 Difference]: Finished difference Result 285 states and 657 transitions. [2025-04-13 18:50:10,344 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 18:50:10,344 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 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 26 [2025-04-13 18:50:10,344 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:10,346 INFO L225 Difference]: With dead ends: 285 [2025-04-13 18:50:10,346 INFO L226 Difference]: Without dead ends: 239 [2025-04-13 18:50:10,346 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-04-13 18:50:10,347 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 37 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:10,347 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 6 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:50:10,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2025-04-13 18:50:10,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 212. [2025-04-13 18:50:10,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 2.4075829383886256) internal successors, (508), 211 states have internal predecessors, (508), 0 states have call successors, (0), 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 18:50:10,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 508 transitions. [2025-04-13 18:50:10,365 INFO L79 Accepts]: Start accepts. Automaton has 212 states and 508 transitions. Word has length 26 [2025-04-13 18:50:10,365 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:50:10,366 INFO L485 AbstractCegarLoop]: Abstraction has 212 states and 508 transitions. [2025-04-13 18:50:10,366 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 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 18:50:10,366 INFO L278 IsEmpty]: Start isEmpty. Operand 212 states and 508 transitions. [2025-04-13 18:50:10,367 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-04-13 18:50:10,367 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:10,367 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:50:10,374 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 18:50:10,567 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:10,568 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:50:10,568 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:10,568 INFO L85 PathProgramCache]: Analyzing trace with hash -858789279, now seen corresponding path program 8 times [2025-04-13 18:50:10,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:10,568 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888960925] [2025-04-13 18:50:10,568 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:50:10,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:10,575 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-04-13 18:50:10,606 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 18:50:10,606 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:50:10,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 18:50:10,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:10,868 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888960925] [2025-04-13 18:50:10,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888960925] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:50:10,868 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327292159] [2025-04-13 18:50:10,868 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:50:10,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:10,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:50:10,870 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 18:50:10,872 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 18:50:10,916 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-04-13 18:50:10,937 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 18:50:10,937 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:50:10,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:10,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-04-13 18:50:10,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:50:11,002 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-13 18:50:11,184 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:50:11,184 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:50:11,412 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2025-04-13 18:50:11,424 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:50:11,424 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 47 [2025-04-13 18:50:11,467 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:50:11,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327292159] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:50:11,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:50:11,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 26 [2025-04-13 18:50:11,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919631563] [2025-04-13 18:50:11,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:50:11,468 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 18:50:11,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:11,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 18:50:11,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2025-04-13 18:50:11,469 INFO L87 Difference]: Start difference. First operand 212 states and 508 transitions. Second operand has 28 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 27 states have internal predecessors, (70), 0 states have call successors, (0), 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 18:50:13,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:13,197 INFO L93 Difference]: Finished difference Result 1693 states and 4160 transitions. [2025-04-13 18:50:13,197 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-04-13 18:50:13,197 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 27 states have internal predecessors, (70), 0 states have call successors, (0), 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 18:50:13,198 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:13,211 INFO L225 Difference]: With dead ends: 1693 [2025-04-13 18:50:13,212 INFO L226 Difference]: Without dead ends: 1567 [2025-04-13 18:50:13,213 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1227 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=599, Invalid=4231, Unknown=0, NotChecked=0, Total=4830 [2025-04-13 18:50:13,213 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 576 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:13,214 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 62 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 18:50:13,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2025-04-13 18:50:13,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 540. [2025-04-13 18:50:13,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 539 states have (on average 2.6196660482374767) internal successors, (1412), 539 states have internal predecessors, (1412), 0 states have call successors, (0), 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 18:50:13,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 1412 transitions. [2025-04-13 18:50:13,274 INFO L79 Accepts]: Start accepts. Automaton has 540 states and 1412 transitions. Word has length 28 [2025-04-13 18:50:13,274 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:50:13,274 INFO L485 AbstractCegarLoop]: Abstraction has 540 states and 1412 transitions. [2025-04-13 18:50:13,274 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 27 states have internal predecessors, (70), 0 states have call successors, (0), 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 18:50:13,274 INFO L278 IsEmpty]: Start isEmpty. Operand 540 states and 1412 transitions. [2025-04-13 18:50:13,275 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-04-13 18:50:13,276 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:13,276 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:50:13,286 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 18:50:13,476 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,SelfDestructingSolverStorable10 [2025-04-13 18:50:13,476 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:50:13,477 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:13,477 INFO L85 PathProgramCache]: Analyzing trace with hash -917488385, now seen corresponding path program 9 times [2025-04-13 18:50:13,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:13,477 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877320794] [2025-04-13 18:50:13,477 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:50:13,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:13,483 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 4 equivalence classes. [2025-04-13 18:50:13,507 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 18:50:13,507 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:50:13,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-04-13 18:50:13,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:13,621 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877320794] [2025-04-13 18:50:13,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877320794] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:50:13,621 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320850412] [2025-04-13 18:50:13,621 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:50:13,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:13,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:50:13,623 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 18:50:13,625 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 18:50:13,667 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 4 equivalence classes. [2025-04-13 18:50:13,700 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 18:50:13,700 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:50:13,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:13,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-04-13 18:50:13,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:50:17,901 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:50:17,901 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 10 [2025-04-13 18:50:17,911 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 17 refuted. 1 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 18:50:17,911 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:50:17,956 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:50:17,956 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2025-04-13 18:50:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 18:50:18,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320850412] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:50:18,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:50:18,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 21 [2025-04-13 18:50:18,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504194561] [2025-04-13 18:50:18,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:50:18,113 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 18:50:18,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:18,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 18:50:18,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=401, Unknown=1, NotChecked=0, Total=506 [2025-04-13 18:50:18,114 INFO L87 Difference]: Start difference. First operand 540 states and 1412 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:18,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:18,993 INFO L93 Difference]: Finished difference Result 1162 states and 2877 transitions. [2025-04-13 18:50:18,994 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 18:50:18,994 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-04-13 18:50:18,994 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:18,997 INFO L225 Difference]: With dead ends: 1162 [2025-04-13 18:50:18,997 INFO L226 Difference]: Without dead ends: 634 [2025-04-13 18:50:18,998 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=561, Invalid=1600, Unknown=1, NotChecked=0, Total=2162 [2025-04-13 18:50:18,999 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 362 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:18,999 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 26 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:50:19,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2025-04-13 18:50:19,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 314. [2025-04-13 18:50:19,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 2.3833865814696487) internal successors, (746), 313 states have internal predecessors, (746), 0 states have call successors, (0), 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 18:50:19,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 746 transitions. [2025-04-13 18:50:19,040 INFO L79 Accepts]: Start accepts. Automaton has 314 states and 746 transitions. Word has length 28 [2025-04-13 18:50:19,040 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:50:19,040 INFO L485 AbstractCegarLoop]: Abstraction has 314 states and 746 transitions. [2025-04-13 18:50:19,040 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:19,040 INFO L278 IsEmpty]: Start isEmpty. Operand 314 states and 746 transitions. [2025-04-13 18:50:19,041 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-04-13 18:50:19,041 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:19,041 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:50:19,047 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 18:50:19,241 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:19,241 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:50:19,242 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:19,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1307584609, now seen corresponding path program 10 times [2025-04-13 18:50:19,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:19,242 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725060286] [2025-04-13 18:50:19,242 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:50:19,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:19,248 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-04-13 18:50:19,255 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 18:50:19,255 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:50:19,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:19,384 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:50:19,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:19,385 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725060286] [2025-04-13 18:50:19,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725060286] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:50:19,385 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178819622] [2025-04-13 18:50:19,385 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:50:19,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:19,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:50:19,387 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 18:50:19,388 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 18:50:19,434 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-04-13 18:50:19,455 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 18:50:19,456 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:50:19,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:19,457 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-04-13 18:50:19,458 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:50:31,564 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 14 refuted. 4 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:50:31,564 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:50:31,622 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:50:31,623 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2025-04-13 18:50:31,650 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:50:31,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178819622] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:50:31,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:50:31,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-04-13 18:50:31,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147636729] [2025-04-13 18:50:31,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:50:31,650 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-13 18:50:31,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:31,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-13 18:50:31,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=121, Unknown=3, NotChecked=0, Total=182 [2025-04-13 18:50:31,651 INFO L87 Difference]: Start difference. First operand 314 states and 746 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:32,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:32,040 INFO L93 Difference]: Finished difference Result 796 states and 1968 transitions. [2025-04-13 18:50:32,040 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 18:50:32,040 INFO L79 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-04-13 18:50:32,040 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:32,043 INFO L225 Difference]: With dead ends: 796 [2025-04-13 18:50:32,044 INFO L226 Difference]: Without dead ends: 579 [2025-04-13 18:50:32,044 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=155, Invalid=304, Unknown=3, NotChecked=0, Total=462 [2025-04-13 18:50:32,044 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 221 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:32,045 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 14 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:50:32,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2025-04-13 18:50:32,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 288. [2025-04-13 18:50:32,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 2.327526132404181) internal successors, (668), 287 states have internal predecessors, (668), 0 states have call successors, (0), 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 18:50:32,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 668 transitions. [2025-04-13 18:50:32,084 INFO L79 Accepts]: Start accepts. Automaton has 288 states and 668 transitions. Word has length 28 [2025-04-13 18:50:32,084 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:50:32,084 INFO L485 AbstractCegarLoop]: Abstraction has 288 states and 668 transitions. [2025-04-13 18:50:32,085 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:32,085 INFO L278 IsEmpty]: Start isEmpty. Operand 288 states and 668 transitions. [2025-04-13 18:50:32,085 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-04-13 18:50:32,085 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:32,085 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:50:32,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-04-13 18:50:32,286 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,SelfDestructingSolverStorable12 [2025-04-13 18:50:32,287 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:50:32,287 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:32,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1122850239, now seen corresponding path program 11 times [2025-04-13 18:50:32,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:32,287 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511444148] [2025-04-13 18:50:32,287 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:50:32,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:32,294 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 32 statements into 5 equivalence classes. [2025-04-13 18:50:32,302 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 18:50:32,302 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-04-13 18:50:32,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:32,418 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-04-13 18:50:32,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:32,418 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511444148] [2025-04-13 18:50:32,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511444148] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:50:32,419 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714302327] [2025-04-13 18:50:32,419 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:50:32,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:32,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:50:32,421 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 18:50:32,424 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 18:50:32,473 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 32 statements into 5 equivalence classes. [2025-04-13 18:50:32,507 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 18:50:32,507 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-04-13 18:50:32,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:32,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 18:50:32,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:50:32,611 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-04-13 18:50:32,612 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:50:32,724 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-04-13 18:50:32,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714302327] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:50:32,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:50:32,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2025-04-13 18:50:32,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528818898] [2025-04-13 18:50:32,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:50:32,725 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 18:50:32,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:32,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 18:50:32,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:50:32,726 INFO L87 Difference]: Start difference. First operand 288 states and 668 transitions. Second operand has 24 states, 24 states have (on average 2.125) internal successors, (51), 23 states have internal predecessors, (51), 0 states have call successors, (0), 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 18:50:32,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:32,841 INFO L93 Difference]: Finished difference Result 329 states and 735 transitions. [2025-04-13 18:50:32,841 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 18:50:32,841 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 23 states have internal predecessors, (51), 0 states have call successors, (0), 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 18:50:32,842 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:32,843 INFO L225 Difference]: With dead ends: 329 [2025-04-13 18:50:32,843 INFO L226 Difference]: Without dead ends: 164 [2025-04-13 18:50:32,844 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:50:32,844 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 33 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:32,844 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 28 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:50:32,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2025-04-13 18:50:32,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2025-04-13 18:50:32,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 2.294478527607362) internal successors, (374), 163 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:32,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 374 transitions. [2025-04-13 18:50:32,865 INFO L79 Accepts]: Start accepts. Automaton has 164 states and 374 transitions. Word has length 32 [2025-04-13 18:50:32,865 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:50:32,865 INFO L485 AbstractCegarLoop]: Abstraction has 164 states and 374 transitions. [2025-04-13 18:50:32,865 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 23 states have internal predecessors, (51), 0 states have call successors, (0), 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 18:50:32,865 INFO L278 IsEmpty]: Start isEmpty. Operand 164 states and 374 transitions. [2025-04-13 18:50:32,865 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-04-13 18:50:32,865 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:32,865 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:50:32,872 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 18:50:33,066 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,SelfDestructingSolverStorable13 [2025-04-13 18:50:33,066 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:50:33,067 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:33,067 INFO L85 PathProgramCache]: Analyzing trace with hash 64776795, now seen corresponding path program 12 times [2025-04-13 18:50:33,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:33,067 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832660950] [2025-04-13 18:50:33,067 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:50:33,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:33,073 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 33 statements into 5 equivalence classes. [2025-04-13 18:50:33,104 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 33 of 33 statements. [2025-04-13 18:50:33,104 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-04-13 18:50:33,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:33,395 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-04-13 18:50:33,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:33,395 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832660950] [2025-04-13 18:50:33,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832660950] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:50:33,395 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368204145] [2025-04-13 18:50:33,395 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:50:33,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:33,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:50:33,397 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 18:50:33,399 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 18:50:33,452 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 33 statements into 5 equivalence classes. [2025-04-13 18:50:33,480 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 33 of 33 statements. [2025-04-13 18:50:33,480 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-04-13 18:50:33,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:33,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-04-13 18:50:33,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:50:33,579 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-13 18:50:33,804 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:50:33,804 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:50:34,245 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2025-04-13 18:50:34,252 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:50:34,252 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 45 [2025-04-13 18:50:34,440 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:50:34,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368204145] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:50:34,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:50:34,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 14] total 37 [2025-04-13 18:50:34,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293252372] [2025-04-13 18:50:34,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:50:34,441 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-04-13 18:50:34,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:34,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-04-13 18:50:34,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1309, Unknown=0, NotChecked=0, Total=1482 [2025-04-13 18:50:34,442 INFO L87 Difference]: Start difference. First operand 164 states and 374 transitions. Second operand has 39 states, 38 states have (on average 2.210526315789474) internal successors, (84), 38 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:38,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:38,428 INFO L93 Difference]: Finished difference Result 1089 states and 2575 transitions. [2025-04-13 18:50:38,428 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2025-04-13 18:50:38,428 INFO L79 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.210526315789474) internal successors, (84), 38 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2025-04-13 18:50:38,428 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:38,432 INFO L225 Difference]: With dead ends: 1089 [2025-04-13 18:50:38,432 INFO L226 Difference]: Without dead ends: 988 [2025-04-13 18:50:38,434 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1461 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=790, Invalid=5852, Unknown=0, NotChecked=0, Total=6642 [2025-04-13 18:50:38,434 INFO L437 NwaCegarLoop]: 6 mSDtfsCounter, 328 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 3037 mSolverCounterSat, 26 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 3065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3037 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:38,434 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 121 Invalid, 3065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 3037 Invalid, 2 Unknown, 0 Unchecked, 2.3s Time] [2025-04-13 18:50:38,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2025-04-13 18:50:38,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 417. [2025-04-13 18:50:38,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 2.4350961538461537) internal successors, (1013), 416 states have internal predecessors, (1013), 0 states have call successors, (0), 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 18:50:38,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 1013 transitions. [2025-04-13 18:50:38,509 INFO L79 Accepts]: Start accepts. Automaton has 417 states and 1013 transitions. Word has length 33 [2025-04-13 18:50:38,509 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:50:38,510 INFO L485 AbstractCegarLoop]: Abstraction has 417 states and 1013 transitions. [2025-04-13 18:50:38,510 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.210526315789474) internal successors, (84), 38 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:38,510 INFO L278 IsEmpty]: Start isEmpty. Operand 417 states and 1013 transitions. [2025-04-13 18:50:38,510 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-04-13 18:50:38,510 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:38,510 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:50:38,517 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 18:50:38,715 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,SelfDestructingSolverStorable14 [2025-04-13 18:50:38,715 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:50:38,715 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:38,715 INFO L85 PathProgramCache]: Analyzing trace with hash -497464065, now seen corresponding path program 13 times [2025-04-13 18:50:38,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:38,715 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947575271] [2025-04-13 18:50:38,716 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:50:38,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:38,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-04-13 18:50:38,737 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-04-13 18:50:38,737 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:50:38,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:39,107 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:50:39,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:39,107 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947575271] [2025-04-13 18:50:39,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947575271] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:50:39,107 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163353898] [2025-04-13 18:50:39,107 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:50:39,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:39,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:50:39,109 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 18:50:39,110 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 18:50:39,155 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-04-13 18:50:39,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-04-13 18:50:39,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:50:39,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:39,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-04-13 18:50:39,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:50:39,337 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-04-13 18:50:39,337 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:50:39,430 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:50:39,430 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2025-04-13 18:50:39,506 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-04-13 18:50:39,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163353898] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:50:39,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:50:39,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 30 [2025-04-13 18:50:39,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118325144] [2025-04-13 18:50:39,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:50:39,507 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-04-13 18:50:39,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:39,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-04-13 18:50:39,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2025-04-13 18:50:39,507 INFO L87 Difference]: Start difference. First operand 417 states and 1013 transitions. Second operand has 32 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 31 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:40,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:40,695 INFO L93 Difference]: Finished difference Result 927 states and 2247 transitions. [2025-04-13 18:50:40,695 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-04-13 18:50:40,695 INFO L79 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 31 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2025-04-13 18:50:40,695 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:40,699 INFO L225 Difference]: With dead ends: 927 [2025-04-13 18:50:40,699 INFO L226 Difference]: Without dead ends: 918 [2025-04-13 18:50:40,700 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=402, Invalid=3138, Unknown=0, NotChecked=0, Total=3540 [2025-04-13 18:50:40,700 INFO L437 NwaCegarLoop]: 6 mSDtfsCounter, 458 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:40,701 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 95 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:50:40,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2025-04-13 18:50:40,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 385. [2025-04-13 18:50:40,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 2.4401041666666665) internal successors, (937), 384 states have internal predecessors, (937), 0 states have call successors, (0), 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 18:50:40,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 937 transitions. [2025-04-13 18:50:40,780 INFO L79 Accepts]: Start accepts. Automaton has 385 states and 937 transitions. Word has length 34 [2025-04-13 18:50:40,780 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:50:40,780 INFO L485 AbstractCegarLoop]: Abstraction has 385 states and 937 transitions. [2025-04-13 18:50:40,780 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 31 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:40,780 INFO L278 IsEmpty]: Start isEmpty. Operand 385 states and 937 transitions. [2025-04-13 18:50:40,781 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-04-13 18:50:40,781 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:40,781 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:50:40,789 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 18:50:40,982 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,SelfDestructingSolverStorable15 [2025-04-13 18:50:40,982 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:50:40,982 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:40,982 INFO L85 PathProgramCache]: Analyzing trace with hash -228785633, now seen corresponding path program 14 times [2025-04-13 18:50:40,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:40,983 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905299560] [2025-04-13 18:50:40,983 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:50:40,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:40,990 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-04-13 18:50:40,999 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 18:50:40,999 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:50:40,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:41,085 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 26 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-04-13 18:50:41,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:41,085 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905299560] [2025-04-13 18:50:41,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905299560] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:50:41,086 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942214035] [2025-04-13 18:50:41,086 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:50:41,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:41,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:50:41,088 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 18:50:41,089 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 18:50:41,143 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-04-13 18:50:41,165 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 18:50:41,165 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:50:41,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:41,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:50:41,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:50:41,199 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 26 proven. 22 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-04-13 18:50:41,200 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:50:41,266 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 26 proven. 22 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-04-13 18:50:41,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942214035] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:50:41,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:50:41,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2025-04-13 18:50:41,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305462456] [2025-04-13 18:50:41,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:50:41,267 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-13 18:50:41,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:41,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-13 18:50:41,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-04-13 18:50:41,268 INFO L87 Difference]: Start difference. First operand 385 states and 937 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:41,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:41,597 INFO L93 Difference]: Finished difference Result 1106 states and 2793 transitions. [2025-04-13 18:50:41,597 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 18:50:41,597 INFO L79 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2025-04-13 18:50:41,597 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:41,601 INFO L225 Difference]: With dead ends: 1106 [2025-04-13 18:50:41,601 INFO L226 Difference]: Without dead ends: 930 [2025-04-13 18:50:41,602 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 66 SyntacticMatches, 8 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-04-13 18:50:41,602 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 77 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:41,602 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 8 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:50:41,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2025-04-13 18:50:41,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 751. [2025-04-13 18:50:41,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 750 states have (on average 2.628) internal successors, (1971), 750 states have internal predecessors, (1971), 0 states have call successors, (0), 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 18:50:41,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1971 transitions. [2025-04-13 18:50:41,728 INFO L79 Accepts]: Start accepts. Automaton has 751 states and 1971 transitions. Word has length 36 [2025-04-13 18:50:41,728 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:50:41,728 INFO L485 AbstractCegarLoop]: Abstraction has 751 states and 1971 transitions. [2025-04-13 18:50:41,728 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:41,728 INFO L278 IsEmpty]: Start isEmpty. Operand 751 states and 1971 transitions. [2025-04-13 18:50:41,729 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-04-13 18:50:41,729 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:41,729 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:50:41,735 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 18:50:41,929 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:41,930 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:50:41,930 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:41,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1200562631, now seen corresponding path program 15 times [2025-04-13 18:50:41,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:41,930 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320294504] [2025-04-13 18:50:41,930 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:50:41,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:41,939 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 6 equivalence classes. [2025-04-13 18:50:41,982 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 37 of 37 statements. [2025-04-13 18:50:41,982 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 18:50:41,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:42,592 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-04-13 18:50:42,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:42,593 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320294504] [2025-04-13 18:50:42,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320294504] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:50:42,593 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290032157] [2025-04-13 18:50:42,593 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:50:42,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:42,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:50:42,595 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 18:50:42,596 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 18:50:42,652 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 6 equivalence classes. [2025-04-13 18:50:42,732 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 37 of 37 statements. [2025-04-13 18:50:42,733 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 18:50:42,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:42,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 18:50:42,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:50:42,938 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 48 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-04-13 18:50:42,938 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:50:43,208 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 36 proven. 22 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-04-13 18:50:43,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290032157] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:50:43,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:50:43,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 33 [2025-04-13 18:50:43,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983053393] [2025-04-13 18:50:43,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:50:43,209 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-04-13 18:50:43,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:43,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-04-13 18:50:43,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2025-04-13 18:50:43,210 INFO L87 Difference]: Start difference. First operand 751 states and 1971 transitions. Second operand has 34 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 33 states have internal predecessors, (87), 0 states have call successors, (0), 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 18:50:44,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:44,512 INFO L93 Difference]: Finished difference Result 2236 states and 5624 transitions. [2025-04-13 18:50:44,513 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-13 18:50:44,513 INFO L79 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 33 states have internal predecessors, (87), 0 states have call successors, (0), 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 37 [2025-04-13 18:50:44,513 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:44,516 INFO L225 Difference]: With dead ends: 2236 [2025-04-13 18:50:44,516 INFO L226 Difference]: Without dead ends: 456 [2025-04-13 18:50:44,518 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=500, Invalid=1756, Unknown=0, NotChecked=0, Total=2256 [2025-04-13 18:50:44,518 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 88 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:44,518 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 32 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:50:44,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2025-04-13 18:50:44,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 402. [2025-04-13 18:50:44,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 2.4438902743142146) internal successors, (980), 401 states have internal predecessors, (980), 0 states have call successors, (0), 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 18:50:44,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 980 transitions. [2025-04-13 18:50:44,596 INFO L79 Accepts]: Start accepts. Automaton has 402 states and 980 transitions. Word has length 37 [2025-04-13 18:50:44,597 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:50:44,597 INFO L485 AbstractCegarLoop]: Abstraction has 402 states and 980 transitions. [2025-04-13 18:50:44,597 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 33 states have internal predecessors, (87), 0 states have call successors, (0), 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 18:50:44,597 INFO L278 IsEmpty]: Start isEmpty. Operand 402 states and 980 transitions. [2025-04-13 18:50:44,598 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-04-13 18:50:44,598 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:44,598 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:50:44,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-04-13 18:50:44,798 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-04-13 18:50:44,798 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:50:44,799 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:44,799 INFO L85 PathProgramCache]: Analyzing trace with hash -916822239, now seen corresponding path program 16 times [2025-04-13 18:50:44,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:44,799 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130946857] [2025-04-13 18:50:44,799 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:50:44,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:44,806 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 38 statements into 2 equivalence classes. [2025-04-13 18:50:44,812 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-04-13 18:50:44,813 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:50:44,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:44,964 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 25 proven. 35 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-04-13 18:50:44,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:44,964 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130946857] [2025-04-13 18:50:44,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130946857] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:50:44,964 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484133593] [2025-04-13 18:50:44,964 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:50:44,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:44,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:50:44,966 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 18:50:44,968 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 18:50:45,031 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 38 statements into 2 equivalence classes. [2025-04-13 18:50:45,056 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-04-13 18:50:45,056 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:50:45,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:45,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-04-13 18:50:45,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:50:45,138 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-04-13 18:50:45,138 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:50:45,154 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:50:45,154 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2025-04-13 18:50:45,191 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-04-13 18:50:45,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484133593] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:50:45,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:50:45,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-04-13 18:50:45,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942629304] [2025-04-13 18:50:45,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:50:45,192 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 18:50:45,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:45,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 18:50:45,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2025-04-13 18:50:45,192 INFO L87 Difference]: Start difference. First operand 402 states and 980 transitions. Second operand has 15 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:45,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:45,866 INFO L93 Difference]: Finished difference Result 1019 states and 2405 transitions. [2025-04-13 18:50:45,867 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-13 18:50:45,867 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-04-13 18:50:45,867 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:45,871 INFO L225 Difference]: With dead ends: 1019 [2025-04-13 18:50:45,871 INFO L226 Difference]: Without dead ends: 915 [2025-04-13 18:50:45,871 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=640, Unknown=0, NotChecked=0, Total=812 [2025-04-13 18:50:45,872 INFO L437 NwaCegarLoop]: 6 mSDtfsCounter, 293 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:45,872 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 33 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:50:45,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2025-04-13 18:50:45,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 434. [2025-04-13 18:50:45,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 2.5219399538106235) internal successors, (1092), 433 states have internal predecessors, (1092), 0 states have call successors, (0), 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 18:50:45,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1092 transitions. [2025-04-13 18:50:45,956 INFO L79 Accepts]: Start accepts. Automaton has 434 states and 1092 transitions. Word has length 38 [2025-04-13 18:50:45,956 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:50:45,957 INFO L485 AbstractCegarLoop]: Abstraction has 434 states and 1092 transitions. [2025-04-13 18:50:45,957 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:45,957 INFO L278 IsEmpty]: Start isEmpty. Operand 434 states and 1092 transitions. [2025-04-13 18:50:45,957 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-04-13 18:50:45,958 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:45,958 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:50:45,964 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 18:50:46,158 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:46,158 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:50:46,159 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:46,159 INFO L85 PathProgramCache]: Analyzing trace with hash -769768769, now seen corresponding path program 17 times [2025-04-13 18:50:46,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:46,159 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825965075] [2025-04-13 18:50:46,159 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:50:46,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:46,173 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 38 statements into 6 equivalence classes. [2025-04-13 18:50:46,191 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 38 of 38 statements. [2025-04-13 18:50:46,191 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-04-13 18:50:46,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:46,644 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:50:46,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:46,645 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825965075] [2025-04-13 18:50:46,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825965075] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:50:46,645 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506640129] [2025-04-13 18:50:46,645 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:50:46,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:46,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:50:46,647 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:50:46,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-04-13 18:50:46,709 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 38 statements into 6 equivalence classes. [2025-04-13 18:50:46,744 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 38 of 38 statements. [2025-04-13 18:50:46,744 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-04-13 18:50:46,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:46,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-13 18:50:46,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:50:47,064 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:50:47,065 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:50:47,082 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:50:47,082 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2025-04-13 18:50:47,227 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 4 proven. 61 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-04-13 18:50:47,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506640129] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:50:47,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:50:47,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 11] total 35 [2025-04-13 18:50:47,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040257362] [2025-04-13 18:50:47,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:50:47,228 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-04-13 18:50:47,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:47,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-04-13 18:50:47,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1206, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 18:50:47,229 INFO L87 Difference]: Start difference. First operand 434 states and 1092 transitions. Second operand has 37 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:49,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:49,536 INFO L93 Difference]: Finished difference Result 2248 states and 5389 transitions. [2025-04-13 18:50:49,536 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2025-04-13 18:50:49,537 INFO L79 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-04-13 18:50:49,537 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:49,544 INFO L225 Difference]: With dead ends: 2248 [2025-04-13 18:50:49,545 INFO L226 Difference]: Without dead ends: 2017 [2025-04-13 18:50:49,546 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2358 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=602, Invalid=7770, Unknown=0, NotChecked=0, Total=8372 [2025-04-13 18:50:49,547 INFO L437 NwaCegarLoop]: 6 mSDtfsCounter, 555 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2693 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:49,547 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 90 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2693 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-04-13 18:50:49,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2025-04-13 18:50:49,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 546. [2025-04-13 18:50:49,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 545 states have (on average 2.623853211009174) internal successors, (1430), 545 states have internal predecessors, (1430), 0 states have call successors, (0), 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 18:50:49,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 1430 transitions. [2025-04-13 18:50:49,670 INFO L79 Accepts]: Start accepts. Automaton has 546 states and 1430 transitions. Word has length 38 [2025-04-13 18:50:49,670 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:50:49,670 INFO L485 AbstractCegarLoop]: Abstraction has 546 states and 1430 transitions. [2025-04-13 18:50:49,670 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:49,670 INFO L278 IsEmpty]: Start isEmpty. Operand 546 states and 1430 transitions. [2025-04-13 18:50:49,671 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-04-13 18:50:49,671 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:49,671 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:50:49,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-04-13 18:50:49,875 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:49,875 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:50:49,875 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:49,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1249551649, now seen corresponding path program 18 times [2025-04-13 18:50:49,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:49,876 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144122584] [2025-04-13 18:50:49,876 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:50:49,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:49,882 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 38 statements into 6 equivalence classes. [2025-04-13 18:50:49,896 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 38 of 38 statements. [2025-04-13 18:50:49,896 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-04-13 18:50:49,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:50,169 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 3 proven. 61 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-04-13 18:50:50,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:50,169 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144122584] [2025-04-13 18:50:50,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144122584] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:50:50,169 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459657879] [2025-04-13 18:50:50,169 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:50:50,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:50,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:50:50,171 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:50:50,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-04-13 18:50:50,235 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 38 statements into 6 equivalence classes. [2025-04-13 18:50:50,359 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 38 of 38 statements. [2025-04-13 18:50:50,359 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-04-13 18:50:50,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:50,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-04-13 18:50:50,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:50:50,465 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-13 18:50:50,709 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-04-13 18:50:50,710 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:50:51,154 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2025-04-13 18:50:51,163 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:50:51,163 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 47 [2025-04-13 18:50:51,332 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-04-13 18:50:51,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459657879] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:50:51,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:50:51,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2025-04-13 18:50:51,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977804703] [2025-04-13 18:50:51,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:50:51,333 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-04-13 18:50:51,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:51,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-04-13 18:50:51,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1188, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 18:50:51,334 INFO L87 Difference]: Start difference. First operand 546 states and 1430 transitions. Second operand has 38 states, 37 states have (on average 2.27027027027027) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:53,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:53,228 INFO L93 Difference]: Finished difference Result 3543 states and 9083 transitions. [2025-04-13 18:50:53,228 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-13 18:50:53,228 INFO L79 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.27027027027027) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-04-13 18:50:53,228 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:53,235 INFO L225 Difference]: With dead ends: 3543 [2025-04-13 18:50:53,235 INFO L226 Difference]: Without dead ends: 1617 [2025-04-13 18:50:53,237 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=514, Invalid=2456, Unknown=0, NotChecked=0, Total=2970 [2025-04-13 18:50:53,237 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 137 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:53,237 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 40 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:50:53,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2025-04-13 18:50:53,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 872. [2025-04-13 18:50:53,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 2.6107921928817452) internal successors, (2274), 871 states have internal predecessors, (2274), 0 states have call successors, (0), 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 18:50:53,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 2274 transitions. [2025-04-13 18:50:53,470 INFO L79 Accepts]: Start accepts. Automaton has 872 states and 2274 transitions. Word has length 38 [2025-04-13 18:50:53,470 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:50:53,470 INFO L485 AbstractCegarLoop]: Abstraction has 872 states and 2274 transitions. [2025-04-13 18:50:53,471 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.27027027027027) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:53,471 INFO L278 IsEmpty]: Start isEmpty. Operand 872 states and 2274 transitions. [2025-04-13 18:50:53,473 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-04-13 18:50:53,474 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:53,474 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:50:53,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-04-13 18:50:53,674 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:53,674 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:50:53,675 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:53,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1496138943, now seen corresponding path program 19 times [2025-04-13 18:50:53,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:53,675 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613935971] [2025-04-13 18:50:53,675 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:50:53,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:53,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-04-13 18:50:53,696 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-04-13 18:50:53,696 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:50:53,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:54,118 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:50:54,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:54,118 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613935971] [2025-04-13 18:50:54,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613935971] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:50:54,118 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271019946] [2025-04-13 18:50:54,118 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:50:54,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:54,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:50:54,121 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:50:54,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-04-13 18:50:54,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-04-13 18:50:54,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-04-13 18:50:54,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:50:54,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:54,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-04-13 18:50:54,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:50:54,413 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-04-13 18:50:54,414 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:50:54,510 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:50:54,510 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2025-04-13 18:50:54,617 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-04-13 18:50:54,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271019946] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:50:54,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:50:54,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 10] total 36 [2025-04-13 18:50:54,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625870764] [2025-04-13 18:50:54,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:50:54,618 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-04-13 18:50:54,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:54,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-04-13 18:50:54,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1290, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 18:50:54,619 INFO L87 Difference]: Start difference. First operand 872 states and 2274 transitions. Second operand has 38 states, 37 states have (on average 2.5135135135135136) internal successors, (93), 37 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:57,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:57,295 INFO L93 Difference]: Finished difference Result 2792 states and 7049 transitions. [2025-04-13 18:50:57,295 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-04-13 18:50:57,295 INFO L79 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.5135135135135136) internal successors, (93), 37 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-04-13 18:50:57,295 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:57,302 INFO L225 Difference]: With dead ends: 2792 [2025-04-13 18:50:57,303 INFO L226 Difference]: Without dead ends: 1852 [2025-04-13 18:50:57,305 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1329 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=840, Invalid=6642, Unknown=0, NotChecked=0, Total=7482 [2025-04-13 18:50:57,306 INFO L437 NwaCegarLoop]: 6 mSDtfsCounter, 582 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 2465 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 2485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:57,306 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 101 Invalid, 2485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2465 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 18:50:57,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2025-04-13 18:50:57,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 456. [2025-04-13 18:50:57,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 2.413186813186813) internal successors, (1098), 455 states have internal predecessors, (1098), 0 states have call successors, (0), 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 18:50:57,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1098 transitions. [2025-04-13 18:50:57,440 INFO L79 Accepts]: Start accepts. Automaton has 456 states and 1098 transitions. Word has length 38 [2025-04-13 18:50:57,440 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:50:57,440 INFO L485 AbstractCegarLoop]: Abstraction has 456 states and 1098 transitions. [2025-04-13 18:50:57,440 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.5135135135135136) internal successors, (93), 37 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:57,441 INFO L278 IsEmpty]: Start isEmpty. Operand 456 states and 1098 transitions. [2025-04-13 18:50:57,441 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-04-13 18:50:57,441 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:57,441 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:50:57,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-04-13 18:50:57,642 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:57,642 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:50:57,642 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:57,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1521753311, now seen corresponding path program 20 times [2025-04-13 18:50:57,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:57,642 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819807950] [2025-04-13 18:50:57,643 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:50:57,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:57,649 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-04-13 18:50:57,660 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-04-13 18:50:57,660 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:50:57,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 6 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:50:58,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:58,041 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819807950] [2025-04-13 18:50:58,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819807950] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:50:58,041 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190268313] [2025-04-13 18:50:58,041 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:50:58,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:58,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:50:58,043 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:50:58,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-04-13 18:50:58,106 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-04-13 18:50:58,127 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-04-13 18:50:58,127 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:50:58,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:58,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-13 18:50:58,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:50:58,430 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-04-13 18:50:58,430 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:50:58,552 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:50:58,553 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2025-04-13 18:50:58,683 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-04-13 18:50:58,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190268313] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:50:58,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:50:58,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 11] total 38 [2025-04-13 18:50:58,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496699036] [2025-04-13 18:50:58,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:50:58,684 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-04-13 18:50:58,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:58,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-04-13 18:50:58,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1445, Unknown=0, NotChecked=0, Total=1560 [2025-04-13 18:50:58,684 INFO L87 Difference]: Start difference. First operand 456 states and 1098 transitions. Second operand has 40 states, 39 states have (on average 2.4615384615384617) internal successors, (96), 39 states have internal predecessors, (96), 0 states have call successors, (0), 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 18:51:00,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:51:00,538 INFO L93 Difference]: Finished difference Result 815 states and 1986 transitions. [2025-04-13 18:51:00,538 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-04-13 18:51:00,539 INFO L79 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.4615384615384617) internal successors, (96), 39 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-04-13 18:51:00,539 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:51:00,542 INFO L225 Difference]: With dead ends: 815 [2025-04-13 18:51:00,542 INFO L226 Difference]: Without dead ends: 589 [2025-04-13 18:51:00,543 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=554, Invalid=5452, Unknown=0, NotChecked=0, Total=6006 [2025-04-13 18:51:00,544 INFO L437 NwaCegarLoop]: 7 mSDtfsCounter, 791 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 1961 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 1987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:51:00,544 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 171 Invalid, 1987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1961 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 18:51:00,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2025-04-13 18:51:00,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 454. [2025-04-13 18:51:00,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 2.370860927152318) internal successors, (1074), 453 states have internal predecessors, (1074), 0 states have call successors, (0), 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 18:51:00,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 1074 transitions. [2025-04-13 18:51:00,663 INFO L79 Accepts]: Start accepts. Automaton has 454 states and 1074 transitions. Word has length 38 [2025-04-13 18:51:00,663 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:51:00,663 INFO L485 AbstractCegarLoop]: Abstraction has 454 states and 1074 transitions. [2025-04-13 18:51:00,664 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.4615384615384617) internal successors, (96), 39 states have internal predecessors, (96), 0 states have call successors, (0), 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 18:51:00,664 INFO L278 IsEmpty]: Start isEmpty. Operand 454 states and 1074 transitions. [2025-04-13 18:51:00,665 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-04-13 18:51:00,665 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:51:00,665 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:51:00,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-04-13 18:51:00,866 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-04-13 18:51:00,866 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:51:00,866 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:51:00,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1359694843, now seen corresponding path program 21 times [2025-04-13 18:51:00,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:51:00,866 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059161757] [2025-04-13 18:51:00,866 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:51:00,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:51:00,875 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 41 statements into 6 equivalence classes. [2025-04-13 18:51:00,901 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 41 of 41 statements. [2025-04-13 18:51:00,903 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 18:51:00,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:51:00,984 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 40 proven. 36 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-04-13 18:51:00,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:51:00,984 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059161757] [2025-04-13 18:51:00,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059161757] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:51:00,985 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050639205] [2025-04-13 18:51:00,985 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:51:00,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:51:00,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:51:00,990 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:51:00,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-04-13 18:51:01,058 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 41 statements into 6 equivalence classes. [2025-04-13 18:51:01,195 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 41 of 41 statements. [2025-04-13 18:51:01,195 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 18:51:01,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:51:01,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 18:51:01,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:51:01,229 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 40 proven. 35 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-04-13 18:51:01,230 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:51:01,297 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 40 proven. 35 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-04-13 18:51:01,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050639205] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:51:01,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:51:01,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 8 [2025-04-13 18:51:01,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150967474] [2025-04-13 18:51:01,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:51:01,298 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-13 18:51:01,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:51:01,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-13 18:51:01,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-04-13 18:51:01,299 INFO L87 Difference]: Start difference. First operand 454 states and 1074 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:51:01,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:51:01,715 INFO L93 Difference]: Finished difference Result 1258 states and 3084 transitions. [2025-04-13 18:51:01,715 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 18:51:01,716 INFO L79 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2025-04-13 18:51:01,716 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:51:01,721 INFO L225 Difference]: With dead ends: 1258 [2025-04-13 18:51:01,721 INFO L226 Difference]: Without dead ends: 1148 [2025-04-13 18:51:01,722 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 75 SyntacticMatches, 10 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-04-13 18:51:01,722 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 80 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:51:01,722 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 8 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:51:01,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2025-04-13 18:51:01,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 799. [2025-04-13 18:51:01,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 798 states have (on average 2.4536340852130327) internal successors, (1958), 798 states have internal predecessors, (1958), 0 states have call successors, (0), 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 18:51:01,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1958 transitions. [2025-04-13 18:51:01,914 INFO L79 Accepts]: Start accepts. Automaton has 799 states and 1958 transitions. Word has length 41 [2025-04-13 18:51:01,914 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:51:01,914 INFO L485 AbstractCegarLoop]: Abstraction has 799 states and 1958 transitions. [2025-04-13 18:51:01,914 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:51:01,914 INFO L278 IsEmpty]: Start isEmpty. Operand 799 states and 1958 transitions. [2025-04-13 18:51:01,916 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-04-13 18:51:01,916 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:51:01,916 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:51:01,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-04-13 18:51:02,116 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-04-13 18:51:02,116 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:51:02,117 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:51:02,117 INFO L85 PathProgramCache]: Analyzing trace with hash 457254811, now seen corresponding path program 22 times [2025-04-13 18:51:02,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:51:02,117 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077957804] [2025-04-13 18:51:02,117 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:51:02,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:51:02,124 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 43 statements into 2 equivalence classes. [2025-04-13 18:51:02,130 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 18:51:02,130 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:51:02,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:51:02,254 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 41 proven. 51 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-04-13 18:51:02,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:51:02,254 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077957804] [2025-04-13 18:51:02,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077957804] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:51:02,254 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583998671] [2025-04-13 18:51:02,254 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:51:02,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:51:02,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:51:02,256 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:51:02,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-04-13 18:51:02,328 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 43 statements into 2 equivalence classes. [2025-04-13 18:51:02,372 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 18:51:02,373 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:51:02,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:51:02,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-04-13 18:51:02,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:51:02,447 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-04-13 18:51:02,448 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:51:02,459 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:51:02,459 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2025-04-13 18:51:02,492 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-04-13 18:51:02,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583998671] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:51:02,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:51:02,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 14 [2025-04-13 18:51:02,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878375168] [2025-04-13 18:51:02,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:51:02,493 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:51:02,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:51:02,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:51:02,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:51:02,493 INFO L87 Difference]: Start difference. First operand 799 states and 1958 transitions. Second operand has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 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 18:51:03,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:51:03,534 INFO L93 Difference]: Finished difference Result 2117 states and 5153 transitions. [2025-04-13 18:51:03,534 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 18:51:03,534 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 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 43 [2025-04-13 18:51:03,534 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:51:03,542 INFO L225 Difference]: With dead ends: 2117 [2025-04-13 18:51:03,542 INFO L226 Difference]: Without dead ends: 1823 [2025-04-13 18:51:03,543 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=204, Invalid=852, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 18:51:03,543 INFO L437 NwaCegarLoop]: 7 mSDtfsCounter, 505 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:51:03,543 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 39 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:51:03,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2025-04-13 18:51:03,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 830. [2025-04-13 18:51:03,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 829 states have (on average 2.4897466827503014) internal successors, (2064), 829 states have internal predecessors, (2064), 0 states have call successors, (0), 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 18:51:03,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 2064 transitions. [2025-04-13 18:51:03,741 INFO L79 Accepts]: Start accepts. Automaton has 830 states and 2064 transitions. Word has length 43 [2025-04-13 18:51:03,741 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:51:03,741 INFO L485 AbstractCegarLoop]: Abstraction has 830 states and 2064 transitions. [2025-04-13 18:51:03,741 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 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 18:51:03,742 INFO L278 IsEmpty]: Start isEmpty. Operand 830 states and 2064 transitions. [2025-04-13 18:51:03,743 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-04-13 18:51:03,743 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:51:03,743 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:51:03,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-04-13 18:51:03,943 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:51:03,943 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:51:03,944 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:51:03,944 INFO L85 PathProgramCache]: Analyzing trace with hash -21792071, now seen corresponding path program 23 times [2025-04-13 18:51:03,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:51:03,944 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373943929] [2025-04-13 18:51:03,944 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:51:03,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:51:03,953 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 43 statements into 7 equivalence classes. [2025-04-13 18:51:03,963 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 18:51:03,963 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-04-13 18:51:03,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:51:04,100 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-04-13 18:51:04,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:51:04,101 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373943929] [2025-04-13 18:51:04,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373943929] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:51:04,101 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914594605] [2025-04-13 18:51:04,101 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:51:04,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:51:04,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:51:04,104 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:51:04,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-04-13 18:51:04,175 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 43 statements into 7 equivalence classes. [2025-04-13 18:51:04,231 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 18:51:04,232 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-04-13 18:51:04,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:51:04,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-04-13 18:51:04,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:51:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-04-13 18:51:04,452 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:51:04,466 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:51:04,467 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2025-04-13 18:51:04,593 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 5 proven. 91 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-04-13 18:51:04,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914594605] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:51:04,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:51:04,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 27 [2025-04-13 18:51:04,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639326778] [2025-04-13 18:51:04,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:51:04,594 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-04-13 18:51:04,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:51:04,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-04-13 18:51:04,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2025-04-13 18:51:04,595 INFO L87 Difference]: Start difference. First operand 830 states and 2064 transitions. Second operand has 29 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 28 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:51:07,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:51:07,185 INFO L93 Difference]: Finished difference Result 3714 states and 8998 transitions. [2025-04-13 18:51:07,185 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2025-04-13 18:51:07,185 INFO L79 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 28 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2025-04-13 18:51:07,186 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:51:07,195 INFO L225 Difference]: With dead ends: 3714 [2025-04-13 18:51:07,195 INFO L226 Difference]: Without dead ends: 2811 [2025-04-13 18:51:07,196 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2338 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=596, Invalid=6886, Unknown=0, NotChecked=0, Total=7482 [2025-04-13 18:51:07,197 INFO L437 NwaCegarLoop]: 7 mSDtfsCounter, 842 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 2323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 18:51:07,197 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 77 Invalid, 2323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 18:51:07,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2025-04-13 18:51:07,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 910. [2025-04-13 18:51:07,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 909 states have (on average 2.5786578657865786) internal successors, (2344), 909 states have internal predecessors, (2344), 0 states have call successors, (0), 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 18:51:07,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 2344 transitions. [2025-04-13 18:51:07,397 INFO L79 Accepts]: Start accepts. Automaton has 910 states and 2344 transitions. Word has length 43 [2025-04-13 18:51:07,397 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:51:07,397 INFO L485 AbstractCegarLoop]: Abstraction has 910 states and 2344 transitions. [2025-04-13 18:51:07,397 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 28 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:51:07,397 INFO L278 IsEmpty]: Start isEmpty. Operand 910 states and 2344 transitions. [2025-04-13 18:51:07,398 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-04-13 18:51:07,398 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:51:07,398 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:51:07,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-04-13 18:51:07,599 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:51:07,599 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:51:07,599 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:51:07,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1671338597, now seen corresponding path program 24 times [2025-04-13 18:51:07,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:51:07,599 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843968790] [2025-04-13 18:51:07,600 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:51:07,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:51:07,606 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 43 statements into 7 equivalence classes. [2025-04-13 18:51:07,627 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 18:51:07,627 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-04-13 18:51:07,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:51:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 30 proven. 62 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-04-13 18:51:07,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:51:07,813 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843968790] [2025-04-13 18:51:07,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843968790] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:51:07,813 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111199225] [2025-04-13 18:51:07,813 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:51:07,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:51:07,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:51:07,815 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:51:07,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-04-13 18:51:07,897 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 43 statements into 7 equivalence classes. [2025-04-13 18:51:08,319 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 18:51:08,319 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-04-13 18:51:08,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:51:08,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-04-13 18:51:08,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:51:08,517 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:51:08,517 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:51:08,563 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:51:08,563 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2025-04-13 18:51:08,642 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-04-13 18:51:08,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111199225] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:51:08,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:51:08,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 18, 10] total 35 [2025-04-13 18:51:08,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404874207] [2025-04-13 18:51:08,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:51:08,643 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-04-13 18:51:08,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:51:08,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-04-13 18:51:08,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1114, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 18:51:08,643 INFO L87 Difference]: Start difference. First operand 910 states and 2344 transitions. Second operand has 37 states, 36 states have (on average 2.6666666666666665) internal successors, (96), 36 states have internal predecessors, (96), 0 states have call successors, (0), 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 18:51:12,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:51:12,664 INFO L93 Difference]: Finished difference Result 5896 states and 14520 transitions. [2025-04-13 18:51:12,664 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2025-04-13 18:51:12,664 INFO L79 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.6666666666666665) internal successors, (96), 36 states have internal predecessors, (96), 0 states have call successors, (0), 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 43 [2025-04-13 18:51:12,664 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:51:12,678 INFO L225 Difference]: With dead ends: 5896 [2025-04-13 18:51:12,678 INFO L226 Difference]: Without dead ends: 5376 [2025-04-13 18:51:12,681 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8371 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1743, Invalid=20013, Unknown=0, NotChecked=0, Total=21756 [2025-04-13 18:51:12,681 INFO L437 NwaCegarLoop]: 7 mSDtfsCounter, 1889 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2871 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1889 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:51:12,681 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1889 Valid, 93 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2871 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-04-13 18:51:12,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5376 states. [2025-04-13 18:51:12,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5376 to 1160. [2025-04-13 18:51:12,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 1159 states have (on average 2.6522864538395168) internal successors, (3074), 1159 states have internal predecessors, (3074), 0 states have call successors, (0), 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 18:51:12,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 3074 transitions. [2025-04-13 18:51:12,925 INFO L79 Accepts]: Start accepts. Automaton has 1160 states and 3074 transitions. Word has length 43 [2025-04-13 18:51:12,926 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:51:12,926 INFO L485 AbstractCegarLoop]: Abstraction has 1160 states and 3074 transitions. [2025-04-13 18:51:12,926 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.6666666666666665) internal successors, (96), 36 states have internal predecessors, (96), 0 states have call successors, (0), 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 18:51:12,926 INFO L278 IsEmpty]: Start isEmpty. Operand 1160 states and 3074 transitions. [2025-04-13 18:51:12,927 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-04-13 18:51:12,927 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:51:12,927 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:51:12,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-04-13 18:51:13,127 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-04-13 18:51:13,128 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:51:13,128 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:51:13,128 INFO L85 PathProgramCache]: Analyzing trace with hash -2050851655, now seen corresponding path program 25 times [2025-04-13 18:51:13,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:51:13,128 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901733542] [2025-04-13 18:51:13,128 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:51:13,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:51:13,137 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-04-13 18:51:13,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 18:51:13,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:51:13,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:51:13,527 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-04-13 18:51:13,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:51:13,528 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901733542] [2025-04-13 18:51:13,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901733542] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:51:13,528 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134467709] [2025-04-13 18:51:13,528 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:51:13,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:51:13,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:51:13,534 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:51:13,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-04-13 18:51:13,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-04-13 18:51:13,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 18:51:13,669 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:51:13,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:51:13,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-13 18:51:13,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:51:13,920 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-04-13 18:51:13,920 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:51:14,011 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:51:14,011 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2025-04-13 18:51:14,135 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-04-13 18:51:14,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134467709] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:51:14,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:51:14,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 11] total 36 [2025-04-13 18:51:14,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890362077] [2025-04-13 18:51:14,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:51:14,136 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-04-13 18:51:14,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:51:14,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-04-13 18:51:14,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 18:51:14,136 INFO L87 Difference]: Start difference. First operand 1160 states and 3074 transitions. Second operand has 38 states, 37 states have (on average 2.72972972972973) internal successors, (101), 37 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:51:20,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:51:20,686 INFO L93 Difference]: Finished difference Result 8991 states and 22581 transitions. [2025-04-13 18:51:20,686 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2025-04-13 18:51:20,686 INFO L79 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.72972972972973) internal successors, (101), 37 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2025-04-13 18:51:20,686 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:51:20,709 INFO L225 Difference]: With dead ends: 8991 [2025-04-13 18:51:20,709 INFO L226 Difference]: Without dead ends: 8003 [2025-04-13 18:51:20,714 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16217 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2875, Invalid=43565, Unknown=0, NotChecked=0, Total=46440 [2025-04-13 18:51:20,716 INFO L437 NwaCegarLoop]: 7 mSDtfsCounter, 2196 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 4595 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2196 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 4646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 4595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:51:20,716 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2196 Valid, 141 Invalid, 4646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 4595 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-04-13 18:51:20,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8003 states. [2025-04-13 18:51:21,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8003 to 1556. [2025-04-13 18:51:21,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 1555 states have (on average 2.720257234726688) internal successors, (4230), 1555 states have internal predecessors, (4230), 0 states have call successors, (0), 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 18:51:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 4230 transitions. [2025-04-13 18:51:21,120 INFO L79 Accepts]: Start accepts. Automaton has 1556 states and 4230 transitions. Word has length 43 [2025-04-13 18:51:21,120 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:51:21,120 INFO L485 AbstractCegarLoop]: Abstraction has 1556 states and 4230 transitions. [2025-04-13 18:51:21,120 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.72972972972973) internal successors, (101), 37 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:51:21,120 INFO L278 IsEmpty]: Start isEmpty. Operand 1556 states and 4230 transitions. [2025-04-13 18:51:21,122 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-04-13 18:51:21,122 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:51:21,122 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:51:21,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-04-13 18:51:21,326 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-04-13 18:51:21,326 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:51:21,326 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:51:21,326 INFO L85 PathProgramCache]: Analyzing trace with hash -147676261, now seen corresponding path program 26 times [2025-04-13 18:51:21,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:51:21,326 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722522930] [2025-04-13 18:51:21,326 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:51:21,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:51:21,334 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-04-13 18:51:21,348 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 18:51:21,348 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:51:21,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:51:22,055 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:51:22,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:51:22,056 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722522930] [2025-04-13 18:51:22,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722522930] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:51:22,056 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006398842] [2025-04-13 18:51:22,056 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:51:22,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:51:22,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:51:22,058 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:51:22,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-04-13 18:51:22,130 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-04-13 18:51:22,153 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 18:51:22,153 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:51:22,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:51:22,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-04-13 18:51:22,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:51:22,665 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:51:22,665 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:51:22,828 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:51:22,828 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2025-04-13 18:51:23,023 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-04-13 18:51:23,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006398842] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:51:23,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:51:23,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 12] total 49 [2025-04-13 18:51:23,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453585508] [2025-04-13 18:51:23,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:51:23,024 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-04-13 18:51:23,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:51:23,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-04-13 18:51:23,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=2384, Unknown=0, NotChecked=0, Total=2550 [2025-04-13 18:51:23,025 INFO L87 Difference]: Start difference. First operand 1556 states and 4230 transitions. Second operand has 51 states, 50 states have (on average 2.26) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 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 18:51:28,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:51:28,343 INFO L93 Difference]: Finished difference Result 4769 states and 12443 transitions. [2025-04-13 18:51:28,343 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2025-04-13 18:51:28,343 INFO L79 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 2.26) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 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 43 [2025-04-13 18:51:28,343 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:51:28,358 INFO L225 Difference]: With dead ends: 4769 [2025-04-13 18:51:28,358 INFO L226 Difference]: Without dead ends: 2657 [2025-04-13 18:51:28,362 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3582 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1199, Invalid=15057, Unknown=0, NotChecked=0, Total=16256 [2025-04-13 18:51:28,366 INFO L437 NwaCegarLoop]: 7 mSDtfsCounter, 862 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 5288 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 5334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 5288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-04-13 18:51:28,366 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 181 Invalid, 5334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 5288 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-04-13 18:51:28,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2025-04-13 18:51:28,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 584. [2025-04-13 18:51:28,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 2.346483704974271) internal successors, (1368), 583 states have internal predecessors, (1368), 0 states have call successors, (0), 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 18:51:28,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 1368 transitions. [2025-04-13 18:51:28,709 INFO L79 Accepts]: Start accepts. Automaton has 584 states and 1368 transitions. Word has length 43 [2025-04-13 18:51:28,713 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:51:28,713 INFO L485 AbstractCegarLoop]: Abstraction has 584 states and 1368 transitions. [2025-04-13 18:51:28,713 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 2.26) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 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 18:51:28,713 INFO L278 IsEmpty]: Start isEmpty. Operand 584 states and 1368 transitions. [2025-04-13 18:51:28,714 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-04-13 18:51:28,714 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:51:28,714 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:51:28,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-04-13 18:51:28,914 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-04-13 18:51:28,914 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:51:28,915 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:51:28,915 INFO L85 PathProgramCache]: Analyzing trace with hash 159415993, now seen corresponding path program 27 times [2025-04-13 18:51:28,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:51:28,915 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994015247] [2025-04-13 18:51:28,915 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:51:28,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:51:28,922 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 43 statements into 7 equivalence classes. [2025-04-13 18:51:28,956 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 41 of 43 statements. [2025-04-13 18:51:28,956 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 18:51:28,956 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:51:29,492 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 12 proven. 93 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-04-13 18:51:29,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:51:29,492 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994015247] [2025-04-13 18:51:29,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994015247] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:51:29,492 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554087666] [2025-04-13 18:51:29,492 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:51:29,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:51:29,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:51:29,494 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:51:29,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-04-13 18:51:29,568 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 43 statements into 7 equivalence classes. [2025-04-13 18:51:29,656 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 41 of 43 statements. [2025-04-13 18:51:29,657 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 18:51:29,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:51:29,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-04-13 18:51:29,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:51:29,771 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-13 18:51:30,102 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-04-13 18:51:30,102 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:51:30,696 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2025-04-13 18:51:30,706 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:51:30,706 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 45 [2025-04-13 18:51:30,989 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-04-13 18:51:30,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554087666] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:51:30,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:51:30,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 45 [2025-04-13 18:51:30,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260388501] [2025-04-13 18:51:30,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:51:30,989 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-13 18:51:30,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:51:30,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-13 18:51:30,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1905, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 18:51:30,990 INFO L87 Difference]: Start difference. First operand 584 states and 1368 transitions. Second operand has 47 states, 46 states have (on average 2.0434782608695654) internal successors, (94), 46 states have internal predecessors, (94), 0 states have call successors, (0), 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 18:51:40,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:51:40,018 INFO L93 Difference]: Finished difference Result 4230 states and 10191 transitions. [2025-04-13 18:51:40,018 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2025-04-13 18:51:40,018 INFO L79 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.0434782608695654) internal successors, (94), 46 states have internal predecessors, (94), 0 states have call successors, (0), 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 43 [2025-04-13 18:51:40,019 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:51:40,029 INFO L225 Difference]: With dead ends: 4230 [2025-04-13 18:51:40,029 INFO L226 Difference]: Without dead ends: 3783 [2025-04-13 18:51:40,031 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2836 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2083, Invalid=11257, Unknown=0, NotChecked=0, Total=13340 [2025-04-13 18:51:40,031 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 853 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 3350 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 3539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 3350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-04-13 18:51:40,031 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 62 Invalid, 3539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 3350 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-04-13 18:51:40,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2025-04-13 18:51:40,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 854. [2025-04-13 18:51:40,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 2.3681125439624853) internal successors, (2020), 853 states have internal predecessors, (2020), 0 states have call successors, (0), 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 18:51:40,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 2020 transitions. [2025-04-13 18:51:40,543 INFO L79 Accepts]: Start accepts. Automaton has 854 states and 2020 transitions. Word has length 43 [2025-04-13 18:51:40,543 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:51:40,543 INFO L485 AbstractCegarLoop]: Abstraction has 854 states and 2020 transitions. [2025-04-13 18:51:40,544 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.0434782608695654) internal successors, (94), 46 states have internal predecessors, (94), 0 states have call successors, (0), 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 18:51:40,544 INFO L278 IsEmpty]: Start isEmpty. Operand 854 states and 2020 transitions. [2025-04-13 18:51:40,545 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-04-13 18:51:40,545 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:51:40,545 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:51:40,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-04-13 18:51:40,745 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:51:40,746 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:51:40,746 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:51:40,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1154807135, now seen corresponding path program 28 times [2025-04-13 18:51:40,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:51:40,746 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503428108] [2025-04-13 18:51:40,746 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:51:40,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:51:40,756 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-04-13 18:51:40,763 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-04-13 18:51:40,763 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:51:40,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:51:41,044 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 26 proven. 70 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-04-13 18:51:41,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:51:41,045 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503428108] [2025-04-13 18:51:41,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503428108] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:51:41,045 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373568113] [2025-04-13 18:51:41,045 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:51:41,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:51:41,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:51:41,048 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:51:41,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-04-13 18:51:41,128 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-04-13 18:51:41,153 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-04-13 18:51:41,153 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:51:41,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:51:41,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:51:41,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:51:41,452 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:51:41,453 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:51:41,556 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:51:41,556 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2025-04-13 18:51:41,696 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-04-13 18:51:41,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373568113] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:51:41,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:51:41,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19, 13] total 43 [2025-04-13 18:51:41,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123385481] [2025-04-13 18:51:41,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:51:41,697 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-04-13 18:51:41,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:51:41,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-04-13 18:51:41,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1698, Unknown=0, NotChecked=0, Total=1980 [2025-04-13 18:51:41,698 INFO L87 Difference]: Start difference. First operand 854 states and 2020 transitions. Second operand has 45 states, 44 states have (on average 2.477272727272727) internal successors, (109), 44 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:52:03,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:52:03,194 INFO L93 Difference]: Finished difference Result 21397 states and 51771 transitions. [2025-04-13 18:52:03,195 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 286 states. [2025-04-13 18:52:03,195 INFO L79 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.477272727272727) internal successors, (109), 44 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2025-04-13 18:52:03,195 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:52:03,226 INFO L225 Difference]: With dead ends: 21397 [2025-04-13 18:52:03,226 INFO L226 Difference]: Without dead ends: 17498 [2025-04-13 18:52:03,236 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 317 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43020 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=7336, Invalid=94106, Unknown=0, NotChecked=0, Total=101442 [2025-04-13 18:52:03,237 INFO L437 NwaCegarLoop]: 8 mSDtfsCounter, 3203 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 8084 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3203 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 8302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 8084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:52:03,237 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3203 Valid, 162 Invalid, 8302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 8084 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2025-04-13 18:52:03,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17498 states. [2025-04-13 18:52:04,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17498 to 3025. [2025-04-13 18:52:04,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3025 states, 3024 states have (on average 2.7546296296296298) internal successors, (8330), 3024 states have internal predecessors, (8330), 0 states have call successors, (0), 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 18:52:04,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3025 states to 3025 states and 8330 transitions. [2025-04-13 18:52:04,351 INFO L79 Accepts]: Start accepts. Automaton has 3025 states and 8330 transitions. Word has length 44 [2025-04-13 18:52:04,351 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:52:04,351 INFO L485 AbstractCegarLoop]: Abstraction has 3025 states and 8330 transitions. [2025-04-13 18:52:04,351 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.477272727272727) internal successors, (109), 44 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:52:04,352 INFO L278 IsEmpty]: Start isEmpty. Operand 3025 states and 8330 transitions. [2025-04-13 18:52:04,353 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-04-13 18:52:04,353 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:52:04,353 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:52:04,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-04-13 18:52:04,554 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:52:04,554 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:52:04,554 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:52:04,554 INFO L85 PathProgramCache]: Analyzing trace with hash 9281919, now seen corresponding path program 29 times [2025-04-13 18:52:04,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:52:04,554 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211266436] [2025-04-13 18:52:04,554 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:52:04,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:52:04,564 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 48 statements into 8 equivalence classes. [2025-04-13 18:52:04,582 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 48 of 48 statements. [2025-04-13 18:52:04,583 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-04-13 18:52:04,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:52:05,139 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:52:05,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:52:05,139 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211266436] [2025-04-13 18:52:05,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211266436] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:52:05,139 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476159771] [2025-04-13 18:52:05,139 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:52:05,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:52:05,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:52:05,141 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:52:05,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-04-13 18:52:05,221 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 48 statements into 8 equivalence classes. [2025-04-13 18:52:05,261 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 48 of 48 statements. [2025-04-13 18:52:05,262 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-04-13 18:52:05,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:52:05,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-04-13 18:52:05,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:52:05,707 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-04-13 18:52:05,707 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:52:05,755 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:52:05,755 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2025-04-13 18:52:05,960 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-04-13 18:52:05,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476159771] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:52:05,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:52:05,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16, 15] total 45 [2025-04-13 18:52:05,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812617884] [2025-04-13 18:52:05,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:52:05,961 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-13 18:52:05,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:52:05,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-13 18:52:05,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=2025, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 18:52:05,962 INFO L87 Difference]: Start difference. First operand 3025 states and 8330 transitions. Second operand has 47 states, 46 states have (on average 2.347826086956522) internal successors, (108), 46 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:52:14,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:52:14,900 INFO L93 Difference]: Finished difference Result 7605 states and 19558 transitions. [2025-04-13 18:52:14,901 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2025-04-13 18:52:14,901 INFO L79 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.347826086956522) internal successors, (108), 46 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2025-04-13 18:52:14,901 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:52:14,916 INFO L225 Difference]: With dead ends: 7605 [2025-04-13 18:52:14,916 INFO L226 Difference]: Without dead ends: 7561 [2025-04-13 18:52:14,917 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3539 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=913, Invalid=12659, Unknown=0, NotChecked=0, Total=13572 [2025-04-13 18:52:14,918 INFO L437 NwaCegarLoop]: 9 mSDtfsCounter, 808 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 5652 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 5678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 5652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:52:14,918 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 240 Invalid, 5678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 5652 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-04-13 18:52:14,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7561 states. [2025-04-13 18:52:16,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7561 to 3929. [2025-04-13 18:52:16,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3929 states, 3928 states have (on average 2.740325865580448) internal successors, (10764), 3928 states have internal predecessors, (10764), 0 states have call successors, (0), 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 18:52:16,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3929 states to 3929 states and 10764 transitions. [2025-04-13 18:52:16,310 INFO L79 Accepts]: Start accepts. Automaton has 3929 states and 10764 transitions. Word has length 48 [2025-04-13 18:52:16,311 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:52:16,311 INFO L485 AbstractCegarLoop]: Abstraction has 3929 states and 10764 transitions. [2025-04-13 18:52:16,311 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.347826086956522) internal successors, (108), 46 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:52:16,311 INFO L278 IsEmpty]: Start isEmpty. Operand 3929 states and 10764 transitions. [2025-04-13 18:52:16,313 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-04-13 18:52:16,313 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:52:16,313 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:52:16,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-04-13 18:52:16,513 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:52:16,514 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:52:16,514 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:52:16,514 INFO L85 PathProgramCache]: Analyzing trace with hash -728282525, now seen corresponding path program 30 times [2025-04-13 18:52:16,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:52:16,514 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163493558] [2025-04-13 18:52:16,514 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:52:16,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:52:16,522 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 50 statements into 10 equivalence classes. [2025-04-13 18:52:16,549 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 46 of 50 statements. [2025-04-13 18:52:16,550 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-04-13 18:52:16,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:52:17,601 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-04-13 18:52:17,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:52:17,601 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163493558] [2025-04-13 18:52:17,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163493558] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:52:17,601 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709047514] [2025-04-13 18:52:17,601 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:52:17,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:52:17,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:52:17,603 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:52:17,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-04-13 18:52:17,686 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 50 statements into 10 equivalence classes. [2025-04-13 18:52:18,104 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 46 of 50 statements. [2025-04-13 18:52:18,105 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-04-13 18:52:18,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:52:18,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-04-13 18:52:18,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:52:18,732 INFO L325 Elim1Store]: treesize reduction 126, result has 2.3 percent of original size [2025-04-13 18:52:18,732 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 66 treesize of output 25 [2025-04-13 18:52:18,737 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 8 proven. 167 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-04-13 18:52:18,737 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:52:19,472 INFO L325 Elim1Store]: treesize reduction 132, result has 19.0 percent of original size [2025-04-13 18:52:19,473 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 107 treesize of output 58 [2025-04-13 18:52:19,956 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 34 proven. 116 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-04-13 18:52:19,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709047514] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:52:19,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:52:19,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 18] total 49 [2025-04-13 18:52:19,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843839735] [2025-04-13 18:52:19,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:52:19,957 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-04-13 18:52:19,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:52:19,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-04-13 18:52:19,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=2145, Unknown=0, NotChecked=0, Total=2550 [2025-04-13 18:52:19,958 INFO L87 Difference]: Start difference. First operand 3929 states and 10764 transitions. Second operand has 51 states, 50 states have (on average 1.96) internal successors, (98), 50 states have internal predecessors, (98), 0 states have call successors, (0), 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 18:52:29,846 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-04-13 18:52:33,979 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-04-13 18:52:35,968 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-04-13 18:52:52,312 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-04-13 18:52:58,365 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-04-13 18:53:00,089 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-04-13 18:53:00,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:53:00,824 INFO L93 Difference]: Finished difference Result 21331 states and 57787 transitions. [2025-04-13 18:53:00,824 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2025-04-13 18:53:00,824 INFO L79 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.96) internal successors, (98), 50 states have internal predecessors, (98), 0 states have call successors, (0), 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 50 [2025-04-13 18:53:00,825 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:53:00,864 INFO L225 Difference]: With dead ends: 21331 [2025-04-13 18:53:00,864 INFO L226 Difference]: Without dead ends: 17316 [2025-04-13 18:53:00,872 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2526 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=1511, Invalid=9617, Unknown=2, NotChecked=0, Total=11130 [2025-04-13 18:53:00,873 INFO L437 NwaCegarLoop]: 7 mSDtfsCounter, 793 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 160 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:53:00,873 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 104 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1267 Invalid, 2 Unknown, 0 Unchecked, 18.7s Time] [2025-04-13 18:53:00,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17316 states. [2025-04-13 18:53:03,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17316 to 5687. [2025-04-13 18:53:03,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5687 states, 5686 states have (on average 2.92191347168484) internal successors, (16614), 5686 states have internal predecessors, (16614), 0 states have call successors, (0), 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 18:53:03,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5687 states to 5687 states and 16614 transitions. [2025-04-13 18:53:03,036 INFO L79 Accepts]: Start accepts. Automaton has 5687 states and 16614 transitions. Word has length 50 [2025-04-13 18:53:03,036 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:53:03,036 INFO L485 AbstractCegarLoop]: Abstraction has 5687 states and 16614 transitions. [2025-04-13 18:53:03,036 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.96) internal successors, (98), 50 states have internal predecessors, (98), 0 states have call successors, (0), 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 18:53:03,037 INFO L278 IsEmpty]: Start isEmpty. Operand 5687 states and 16614 transitions. [2025-04-13 18:53:03,039 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-04-13 18:53:03,039 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:53:03,039 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:53:03,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-04-13 18:53:03,239 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-04-13 18:53:03,240 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:53:03,240 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:53:03,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1627209865, now seen corresponding path program 31 times [2025-04-13 18:53:03,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:53:03,240 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577659612] [2025-04-13 18:53:03,240 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:53:03,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:53:03,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-04-13 18:53:03,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-04-13 18:53:03,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:53:03,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:53:03,875 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:53:03,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:53:03,875 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577659612] [2025-04-13 18:53:03,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577659612] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:53:03,875 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848864677] [2025-04-13 18:53:03,875 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:53:03,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:53:03,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:53:03,877 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:53:03,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-04-13 18:53:03,963 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-04-13 18:53:03,985 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-04-13 18:53:03,985 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:53:03,985 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:53:03,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-04-13 18:53:03,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:53:04,306 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-04-13 18:53:04,306 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:53:04,366 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:53:04,366 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2025-04-13 18:53:04,539 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-04-13 18:53:04,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848864677] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:53:04,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:53:04,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 15, 10] total 46 [2025-04-13 18:53:04,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619901877] [2025-04-13 18:53:04,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:53:04,539 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-04-13 18:53:04,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:53:04,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-04-13 18:53:04,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2100, Unknown=0, NotChecked=0, Total=2256 [2025-04-13 18:53:04,540 INFO L87 Difference]: Start difference. First operand 5687 states and 16614 transitions. Second operand has 48 states, 47 states have (on average 2.6808510638297873) internal successors, (126), 47 states have internal predecessors, (126), 0 states have call successors, (0), 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 18:53:21,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:53:21,888 INFO L93 Difference]: Finished difference Result 15375 states and 41166 transitions. [2025-04-13 18:53:21,889 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2025-04-13 18:53:21,889 INFO L79 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.6808510638297873) internal successors, (126), 47 states have internal predecessors, (126), 0 states have call successors, (0), 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 51 [2025-04-13 18:53:21,889 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:53:21,927 INFO L225 Difference]: With dead ends: 15375 [2025-04-13 18:53:21,927 INFO L226 Difference]: Without dead ends: 15080 [2025-04-13 18:53:21,931 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7869 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1505, Invalid=27565, Unknown=0, NotChecked=0, Total=29070 [2025-04-13 18:53:21,931 INFO L437 NwaCegarLoop]: 8 mSDtfsCounter, 982 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 6133 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 6179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 6133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-04-13 18:53:21,931 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 198 Invalid, 6179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 6133 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-04-13 18:53:21,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15080 states. [2025-04-13 18:53:24,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15080 to 5711. [2025-04-13 18:53:24,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5711 states, 5710 states have (on average 2.926444833625219) internal successors, (16710), 5710 states have internal predecessors, (16710), 0 states have call successors, (0), 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 18:53:24,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5711 states to 5711 states and 16710 transitions. [2025-04-13 18:53:24,069 INFO L79 Accepts]: Start accepts. Automaton has 5711 states and 16710 transitions. Word has length 51 [2025-04-13 18:53:24,069 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:53:24,069 INFO L485 AbstractCegarLoop]: Abstraction has 5711 states and 16710 transitions. [2025-04-13 18:53:24,069 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.6808510638297873) internal successors, (126), 47 states have internal predecessors, (126), 0 states have call successors, (0), 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 18:53:24,069 INFO L278 IsEmpty]: Start isEmpty. Operand 5711 states and 16710 transitions. [2025-04-13 18:53:24,072 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-04-13 18:53:24,072 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:53:24,072 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:53:24,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-04-13 18:53:24,272 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:53:24,272 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:53:24,273 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:53:24,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1466012003, now seen corresponding path program 32 times [2025-04-13 18:53:24,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:53:24,273 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301912603] [2025-04-13 18:53:24,273 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:53:24,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:53:24,282 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 51 statements into 2 equivalence classes. [2025-04-13 18:53:24,292 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-04-13 18:53:24,293 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:53:24,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:53:24,473 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-04-13 18:53:24,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:53:24,473 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301912603] [2025-04-13 18:53:24,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301912603] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:53:24,474 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488037700] [2025-04-13 18:53:24,474 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:53:24,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:53:24,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:53:24,475 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:53:24,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-04-13 18:53:24,564 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 51 statements into 2 equivalence classes. [2025-04-13 18:53:24,588 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-04-13 18:53:24,588 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:53:24,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:53:24,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:53:24,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:53:24,896 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-04-13 18:53:24,896 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:53:24,911 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:53:24,911 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2025-04-13 18:53:24,940 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-04-13 18:53:24,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488037700] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:53:24,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:53:24,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16, 11] total 26 [2025-04-13 18:53:24,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919931184] [2025-04-13 18:53:24,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:53:24,941 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 18:53:24,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:53:24,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 18:53:24,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2025-04-13 18:53:24,942 INFO L87 Difference]: Start difference. First operand 5711 states and 16710 transitions. Second operand has 28 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:53:42,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:53:42,522 INFO L93 Difference]: Finished difference Result 20852 states and 56806 transitions. [2025-04-13 18:53:42,522 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2025-04-13 18:53:42,522 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-04-13 18:53:42,522 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:53:42,566 INFO L225 Difference]: With dead ends: 20852 [2025-04-13 18:53:42,566 INFO L226 Difference]: Without dead ends: 20129 [2025-04-13 18:53:42,571 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9871 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1436, Invalid=23056, Unknown=0, NotChecked=0, Total=24492 [2025-04-13 18:53:42,574 INFO L437 NwaCegarLoop]: 8 mSDtfsCounter, 1419 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 4710 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 4734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 4710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:53:42,575 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1419 Valid, 150 Invalid, 4734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 4710 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-04-13 18:53:42,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20129 states. [2025-04-13 18:53:44,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20129 to 4832. [2025-04-13 18:53:44,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4832 states, 4831 states have (on average 2.8834609811633203) internal successors, (13930), 4831 states have internal predecessors, (13930), 0 states have call successors, (0), 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 18:53:44,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4832 states to 4832 states and 13930 transitions. [2025-04-13 18:53:44,813 INFO L79 Accepts]: Start accepts. Automaton has 4832 states and 13930 transitions. Word has length 51 [2025-04-13 18:53:44,813 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:53:44,813 INFO L485 AbstractCegarLoop]: Abstraction has 4832 states and 13930 transitions. [2025-04-13 18:53:44,813 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:53:44,813 INFO L278 IsEmpty]: Start isEmpty. Operand 4832 states and 13930 transitions. [2025-04-13 18:53:44,815 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-04-13 18:53:44,816 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:53:44,816 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:53:44,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-04-13 18:53:45,016 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:53:45,016 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:53:45,016 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:53:45,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1638317705, now seen corresponding path program 33 times [2025-04-13 18:53:45,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:53:45,017 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102386807] [2025-04-13 18:53:45,017 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:53:45,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:53:45,025 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 51 statements into 9 equivalence classes. [2025-04-13 18:53:45,056 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 49 of 51 statements. [2025-04-13 18:53:45,056 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-04-13 18:53:45,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:53:45,463 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 26 proven. 128 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-04-13 18:53:45,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:53:45,463 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102386807] [2025-04-13 18:53:45,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102386807] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:53:45,463 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512753447] [2025-04-13 18:53:45,463 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:53:45,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:53:45,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:53:45,465 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:53:45,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-04-13 18:53:45,557 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 51 statements into 9 equivalence classes. [2025-04-13 18:53:45,799 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 49 of 51 statements. [2025-04-13 18:53:45,799 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-04-13 18:53:45,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:53:45,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 65 conjuncts are in the unsatisfiable core [2025-04-13 18:53:45,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:53:45,933 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-13 18:53:45,957 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-13 18:53:46,250 INFO L325 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2025-04-13 18:53:46,251 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 13 [2025-04-13 18:53:46,256 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 1 proven. 153 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-04-13 18:53:46,256 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:53:47,107 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 84 [2025-04-13 18:53:47,120 INFO L325 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2025-04-13 18:53:47,120 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 284 treesize of output 256 [2025-04-13 18:53:47,429 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 1 proven. 153 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-04-13 18:53:47,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512753447] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:53:47,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:53:47,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 53 [2025-04-13 18:53:47,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923191433] [2025-04-13 18:53:47,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:53:47,430 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-04-13 18:53:47,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:53:47,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-04-13 18:53:47,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=512, Invalid=2458, Unknown=0, NotChecked=0, Total=2970 [2025-04-13 18:53:47,430 INFO L87 Difference]: Start difference. First operand 4832 states and 13930 transitions. Second operand has 55 states, 54 states have (on average 1.8703703703703705) internal successors, (101), 54 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:54:20,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:54:20,283 INFO L93 Difference]: Finished difference Result 23903 states and 63370 transitions. [2025-04-13 18:54:20,283 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2025-04-13 18:54:20,283 INFO L79 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.8703703703703705) internal successors, (101), 54 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-04-13 18:54:20,283 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:54:20,310 INFO L225 Difference]: With dead ends: 23903 [2025-04-13 18:54:20,311 INFO L226 Difference]: Without dead ends: 11376 [2025-04-13 18:54:20,324 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3385 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2354, Invalid=12166, Unknown=0, NotChecked=0, Total=14520 [2025-04-13 18:54:20,324 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 614 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 3659 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 3722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:54:20,324 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 97 Invalid, 3722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3659 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-04-13 18:54:20,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11376 states. [2025-04-13 18:54:23,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11376 to 4439. [2025-04-13 18:54:23,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4439 states, 4438 states have (on average 2.711581793600721) internal successors, (12034), 4438 states have internal predecessors, (12034), 0 states have call successors, (0), 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 18:54:23,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4439 states to 4439 states and 12034 transitions. [2025-04-13 18:54:23,320 INFO L79 Accepts]: Start accepts. Automaton has 4439 states and 12034 transitions. Word has length 51 [2025-04-13 18:54:23,321 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:54:23,321 INFO L485 AbstractCegarLoop]: Abstraction has 4439 states and 12034 transitions. [2025-04-13 18:54:23,321 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 1.8703703703703705) internal successors, (101), 54 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:54:23,321 INFO L278 IsEmpty]: Start isEmpty. Operand 4439 states and 12034 transitions. [2025-04-13 18:54:23,324 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-04-13 18:54:23,325 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:54:23,325 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:54:23,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-04-13 18:54:23,525 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-04-13 18:54:23,525 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:54:23,525 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:54:23,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1577282717, now seen corresponding path program 34 times [2025-04-13 18:54:23,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:54:23,526 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099530921] [2025-04-13 18:54:23,526 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:54:23,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:54:23,534 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 51 statements into 2 equivalence classes. [2025-04-13 18:54:23,543 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-04-13 18:54:23,543 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:54:23,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:54:23,791 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 54 proven. 96 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-04-13 18:54:23,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:54:23,791 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099530921] [2025-04-13 18:54:23,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099530921] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:54:23,791 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899624129] [2025-04-13 18:54:23,791 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:54:23,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:54:23,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:54:23,793 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:54:23,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-04-13 18:54:23,888 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 51 statements into 2 equivalence classes. [2025-04-13 18:54:23,911 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-04-13 18:54:23,912 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:54:23,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:54:23,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-04-13 18:54:23,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:54:24,140 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-04-13 18:54:24,140 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:54:24,203 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:54:24,203 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2025-04-13 18:54:24,387 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 149 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-04-13 18:54:24,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899624129] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:54:24,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:54:24,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 41 [2025-04-13 18:54:24,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205980282] [2025-04-13 18:54:24,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:54:24,388 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-04-13 18:54:24,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:54:24,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-04-13 18:54:24,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1583, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 18:54:24,389 INFO L87 Difference]: Start difference. First operand 4439 states and 12034 transitions. Second operand has 43 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 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 18:55:08,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:55:08,934 INFO L93 Difference]: Finished difference Result 32768 states and 84997 transitions. [2025-04-13 18:55:08,934 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 264 states. [2025-04-13 18:55:08,934 INFO L79 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 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 51 [2025-04-13 18:55:08,934 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:55:09,003 INFO L225 Difference]: With dead ends: 32768 [2025-04-13 18:55:09,004 INFO L226 Difference]: Without dead ends: 29683 [2025-04-13 18:55:09,017 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35251 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=5087, Invalid=81643, Unknown=0, NotChecked=0, Total=86730 [2025-04-13 18:55:09,018 INFO L437 NwaCegarLoop]: 8 mSDtfsCounter, 2309 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 6027 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2309 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 6131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 6027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:55:09,018 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2309 Valid, 123 Invalid, 6131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 6027 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-04-13 18:55:09,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29683 states. [2025-04-13 18:55:12,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29683 to 5017. [2025-04-13 18:55:12,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5017 states, 5016 states have (on average 2.7312599681020733) internal successors, (13700), 5016 states have internal predecessors, (13700), 0 states have call successors, (0), 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 18:55:12,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5017 states to 5017 states and 13700 transitions. [2025-04-13 18:55:12,650 INFO L79 Accepts]: Start accepts. Automaton has 5017 states and 13700 transitions. Word has length 51 [2025-04-13 18:55:12,650 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:55:12,650 INFO L485 AbstractCegarLoop]: Abstraction has 5017 states and 13700 transitions. [2025-04-13 18:55:12,650 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 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 18:55:12,650 INFO L278 IsEmpty]: Start isEmpty. Operand 5017 states and 13700 transitions. [2025-04-13 18:55:12,655 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-04-13 18:55:12,655 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:55:12,655 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:55:12,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-04-13 18:55:12,855 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-04-13 18:55:12,855 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:55:12,856 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:55:12,856 INFO L85 PathProgramCache]: Analyzing trace with hash -363453833, now seen corresponding path program 35 times [2025-04-13 18:55:12,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:55:12,856 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519416689] [2025-04-13 18:55:12,856 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:55:12,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:55:12,864 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 51 statements into 9 equivalence classes. [2025-04-13 18:55:12,875 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 51 of 51 statements. [2025-04-13 18:55:12,875 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-04-13 18:55:12,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:55:13,111 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-04-13 18:55:13,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:55:13,111 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519416689] [2025-04-13 18:55:13,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519416689] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:55:13,111 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468013225] [2025-04-13 18:55:13,111 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:55:13,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:55:13,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:55:13,113 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:55:13,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-04-13 18:55:13,214 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 51 statements into 9 equivalence classes. [2025-04-13 18:55:13,280 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 51 of 51 statements. [2025-04-13 18:55:13,281 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-04-13 18:55:13,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:55:13,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 54 conjuncts are in the unsatisfiable core [2025-04-13 18:55:13,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:55:13,679 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 186 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 18:55:13,679 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:55:13,707 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:55:13,707 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2025-04-13 18:55:13,886 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 3 proven. 150 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-04-13 18:55:13,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468013225] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:55:13,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:55:13,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21, 15] total 40 [2025-04-13 18:55:13,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139987603] [2025-04-13 18:55:13,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:55:13,887 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-04-13 18:55:13,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:55:13,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-04-13 18:55:13,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1593, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 18:55:13,888 INFO L87 Difference]: Start difference. First operand 5017 states and 13700 transitions. Second operand has 42 states, 41 states have (on average 2.658536585365854) internal successors, (109), 41 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:55:53,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:55:53,627 INFO L93 Difference]: Finished difference Result 37732 states and 99709 transitions. [2025-04-13 18:55:53,627 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 389 states. [2025-04-13 18:55:53,627 INFO L79 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.658536585365854) internal successors, (109), 41 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-04-13 18:55:53,627 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:55:53,711 INFO L225 Difference]: With dead ends: 37732 [2025-04-13 18:55:53,711 INFO L226 Difference]: Without dead ends: 32704 [2025-04-13 18:55:53,730 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 413 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76689 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=8545, Invalid=163265, Unknown=0, NotChecked=0, Total=171810 [2025-04-13 18:55:53,731 INFO L437 NwaCegarLoop]: 8 mSDtfsCounter, 4476 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 5708 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4476 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 5829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 5708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:55:53,731 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [4476 Valid, 175 Invalid, 5829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 5708 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-04-13 18:55:53,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32704 states. [2025-04-13 18:55:57,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32704 to 4929. [2025-04-13 18:55:57,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4929 states, 4928 states have (on average 2.7743506493506493) internal successors, (13672), 4928 states have internal predecessors, (13672), 0 states have call successors, (0), 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 18:55:57,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4929 states to 4929 states and 13672 transitions. [2025-04-13 18:55:57,471 INFO L79 Accepts]: Start accepts. Automaton has 4929 states and 13672 transitions. Word has length 51 [2025-04-13 18:55:57,471 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:55:57,471 INFO L485 AbstractCegarLoop]: Abstraction has 4929 states and 13672 transitions. [2025-04-13 18:55:57,471 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.658536585365854) internal successors, (109), 41 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:55:57,471 INFO L278 IsEmpty]: Start isEmpty. Operand 4929 states and 13672 transitions. [2025-04-13 18:55:57,476 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-04-13 18:55:57,476 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:55:57,477 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:55:57,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2025-04-13 18:55:57,677 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-04-13 18:55:57,677 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:55:57,677 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:55:57,677 INFO L85 PathProgramCache]: Analyzing trace with hash -944280675, now seen corresponding path program 36 times [2025-04-13 18:55:57,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:55:57,678 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760087829] [2025-04-13 18:55:57,678 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:55:57,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:55:57,685 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 51 statements into 9 equivalence classes. [2025-04-13 18:55:57,705 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 51 of 51 statements. [2025-04-13 18:55:57,705 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-04-13 18:55:57,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:55:57,889 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 151 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-04-13 18:55:57,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:55:57,889 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760087829] [2025-04-13 18:55:57,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760087829] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:55:57,889 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049064961] [2025-04-13 18:55:57,889 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:55:57,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:55:57,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:55:57,891 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:55:57,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-04-13 18:55:57,989 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 51 statements into 9 equivalence classes. [2025-04-13 18:55:58,446 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 51 of 51 statements. [2025-04-13 18:55:58,447 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-04-13 18:55:58,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:55:58,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-04-13 18:55:58,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:55:58,505 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-04-13 18:55:58,505 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:55:58,528 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:55:58,528 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2025-04-13 18:55:58,555 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 151 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-04-13 18:55:58,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049064961] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:55:58,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:55:58,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 15 [2025-04-13 18:55:58,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640776825] [2025-04-13 18:55:58,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:55:58,555 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 18:55:58,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:55:58,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 18:55:58,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:55:58,556 INFO L87 Difference]: Start difference. First operand 4929 states and 13672 transitions. Second operand has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:56:05,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:56:05,849 INFO L93 Difference]: Finished difference Result 5543 states and 15048 transitions. [2025-04-13 18:56:05,849 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-13 18:56:05,849 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-04-13 18:56:05,849 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:56:05,870 INFO L225 Difference]: With dead ends: 5543 [2025-04-13 18:56:05,870 INFO L226 Difference]: Without dead ends: 4571 [2025-04-13 18:56:05,872 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2025-04-13 18:56:05,872 INFO L437 NwaCegarLoop]: 8 mSDtfsCounter, 404 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:56:05,873 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 86 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:56:05,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4571 states. [2025-04-13 18:56:07,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4571 to 1181. [2025-04-13 18:56:07,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 1180 states have (on average 2.422033898305085) internal successors, (2858), 1180 states have internal predecessors, (2858), 0 states have call successors, (0), 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 18:56:07,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 2858 transitions. [2025-04-13 18:56:07,741 INFO L79 Accepts]: Start accepts. Automaton has 1181 states and 2858 transitions. Word has length 51 [2025-04-13 18:56:07,742 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:56:07,742 INFO L485 AbstractCegarLoop]: Abstraction has 1181 states and 2858 transitions. [2025-04-13 18:56:07,742 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:56:07,742 INFO L278 IsEmpty]: Start isEmpty. Operand 1181 states and 2858 transitions. [2025-04-13 18:56:07,743 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-04-13 18:56:07,743 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:56:07,744 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:56:07,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2025-04-13 18:56:07,944 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-04-13 18:56:07,944 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:56:07,944 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:56:07,945 INFO L85 PathProgramCache]: Analyzing trace with hash -516802757, now seen corresponding path program 37 times [2025-04-13 18:56:07,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:56:07,945 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11156055] [2025-04-13 18:56:07,945 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:56:07,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:56:07,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-04-13 18:56:07,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-04-13 18:56:07,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:56:07,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:56:08,063 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 77 proven. 71 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-04-13 18:56:08,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:56:08,063 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11156055] [2025-04-13 18:56:08,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11156055] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:56:08,063 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33704773] [2025-04-13 18:56:08,063 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:56:08,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:56:08,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:56:08,065 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:56:08,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-04-13 18:56:08,164 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-04-13 18:56:08,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-04-13 18:56:08,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:56:08,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:56:08,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-04-13 18:56:08,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:56:08,220 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 77 proven. 70 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-04-13 18:56:08,220 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:56:08,297 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 77 proven. 70 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-04-13 18:56:08,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33704773] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:56:08,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:56:08,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 10 [2025-04-13 18:56:08,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664167848] [2025-04-13 18:56:08,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:56:08,298 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-13 18:56:08,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:56:08,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-13 18:56:08,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2025-04-13 18:56:08,298 INFO L87 Difference]: Start difference. First operand 1181 states and 2858 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:56:14,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:56:14,110 INFO L93 Difference]: Finished difference Result 2725 states and 6946 transitions. [2025-04-13 18:56:14,110 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 18:56:14,110 INFO L79 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-04-13 18:56:14,111 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:56:14,127 INFO L225 Difference]: With dead ends: 2725 [2025-04-13 18:56:14,127 INFO L226 Difference]: Without dead ends: 2620 [2025-04-13 18:56:14,128 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 93 SyntacticMatches, 14 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2025-04-13 18:56:14,128 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 146 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:56:14,128 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 11 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:56:14,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2025-04-13 18:56:17,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2333. [2025-04-13 18:56:17,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2333 states, 2332 states have (on average 2.5334476843910805) internal successors, (5908), 2332 states have internal predecessors, (5908), 0 states have call successors, (0), 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 18:56:17,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2333 states to 2333 states and 5908 transitions. [2025-04-13 18:56:17,321 INFO L79 Accepts]: Start accepts. Automaton has 2333 states and 5908 transitions. Word has length 51 [2025-04-13 18:56:17,321 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:56:17,322 INFO L485 AbstractCegarLoop]: Abstraction has 2333 states and 5908 transitions. [2025-04-13 18:56:17,322 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:56:17,322 INFO L278 IsEmpty]: Start isEmpty. Operand 2333 states and 5908 transitions. [2025-04-13 18:56:17,324 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-04-13 18:56:17,324 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:56:17,324 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:56:17,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2025-04-13 18:56:17,525 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-04-13 18:56:17,525 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:56:17,525 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:56:17,525 INFO L85 PathProgramCache]: Analyzing trace with hash -845451813, now seen corresponding path program 38 times [2025-04-13 18:56:17,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:56:17,525 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099144317] [2025-04-13 18:56:17,525 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:56:17,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:56:17,533 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-04-13 18:56:17,546 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 18:56:17,546 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:56:17,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:56:17,897 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 30 proven. 133 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-04-13 18:56:17,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:56:17,897 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099144317] [2025-04-13 18:56:17,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099144317] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:56:17,897 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101983620] [2025-04-13 18:56:17,898 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:56:17,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:56:17,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:56:17,899 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:56:17,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-04-13 18:56:18,003 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-04-13 18:56:18,028 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 18:56:18,028 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:56:18,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:56:18,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 72 conjuncts are in the unsatisfiable core [2025-04-13 18:56:18,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:56:18,634 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:56:18,634 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:56:18,666 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:56:18,666 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2025-04-13 18:56:18,867 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-04-13 18:56:18,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101983620] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:56:18,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:56:18,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 25, 10] total 52 [2025-04-13 18:56:18,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748227359] [2025-04-13 18:56:18,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:56:18,868 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2025-04-13 18:56:18,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:56:18,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2025-04-13 18:56:18,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2651, Unknown=0, NotChecked=0, Total=2862 [2025-04-13 18:56:18,868 INFO L87 Difference]: Start difference. First operand 2333 states and 5908 transitions. Second operand has 54 states, 53 states have (on average 2.4150943396226414) internal successors, (128), 53 states have internal predecessors, (128), 0 states have call successors, (0), 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 18:56:33,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:56:33,365 INFO L93 Difference]: Finished difference Result 4854 states and 11606 transitions. [2025-04-13 18:56:33,366 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2025-04-13 18:56:33,366 INFO L79 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.4150943396226414) internal successors, (128), 53 states have internal predecessors, (128), 0 states have call successors, (0), 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 53 [2025-04-13 18:56:33,366 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:56:33,383 INFO L225 Difference]: With dead ends: 4854 [2025-04-13 18:56:33,383 INFO L226 Difference]: Without dead ends: 2329 [2025-04-13 18:56:33,388 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21358 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2826, Invalid=56954, Unknown=0, NotChecked=0, Total=59780 [2025-04-13 18:56:33,388 INFO L437 NwaCegarLoop]: 9 mSDtfsCounter, 2457 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 7757 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2457 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 7847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 7757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:56:33,388 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2457 Valid, 251 Invalid, 7847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 7757 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-04-13 18:56:33,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2025-04-13 18:56:34,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 1203. [2025-04-13 18:56:34,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 2.5033277870216306) internal successors, (3009), 1202 states have internal predecessors, (3009), 0 states have call successors, (0), 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 18:56:34,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 3009 transitions. [2025-04-13 18:56:34,632 INFO L79 Accepts]: Start accepts. Automaton has 1203 states and 3009 transitions. Word has length 53 [2025-04-13 18:56:34,632 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:56:34,632 INFO L485 AbstractCegarLoop]: Abstraction has 1203 states and 3009 transitions. [2025-04-13 18:56:34,632 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 2.4150943396226414) internal successors, (128), 53 states have internal predecessors, (128), 0 states have call successors, (0), 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 18:56:34,632 INFO L278 IsEmpty]: Start isEmpty. Operand 1203 states and 3009 transitions. [2025-04-13 18:56:34,634 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-04-13 18:56:34,634 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:56:34,634 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:56:34,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2025-04-13 18:56:34,834 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2025-04-13 18:56:34,834 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:56:34,835 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:56:34,835 INFO L85 PathProgramCache]: Analyzing trace with hash -532269319, now seen corresponding path program 39 times [2025-04-13 18:56:34,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:56:34,835 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646054185] [2025-04-13 18:56:34,835 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:56:34,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:56:34,843 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 53 statements into 9 equivalence classes. [2025-04-13 18:56:34,874 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 51 of 53 statements. [2025-04-13 18:56:34,874 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-04-13 18:56:34,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:56:35,227 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 21 proven. 142 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-04-13 18:56:35,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:56:35,227 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646054185] [2025-04-13 18:56:35,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646054185] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:56:35,227 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534372813] [2025-04-13 18:56:35,227 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:56:35,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:56:35,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:56:35,229 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:56:35,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2025-04-13 18:56:35,336 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 53 statements into 9 equivalence classes. [2025-04-13 18:56:35,757 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 51 of 53 statements. [2025-04-13 18:56:35,757 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-04-13 18:56:35,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:56:35,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-04-13 18:56:35,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:56:35,900 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-13 18:56:36,190 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 163 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-04-13 18:56:36,190 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:56:36,840 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2025-04-13 18:56:36,847 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:56:36,847 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 47 [2025-04-13 18:56:37,135 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 163 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-04-13 18:56:37,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534372813] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:56:37,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:56:37,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 53 [2025-04-13 18:56:37,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141986392] [2025-04-13 18:56:37,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:56:37,135 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-04-13 18:56:37,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:56:37,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-04-13 18:56:37,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=2503, Unknown=0, NotChecked=0, Total=2970 [2025-04-13 18:56:37,136 INFO L87 Difference]: Start difference. First operand 1203 states and 3009 transitions. Second operand has 55 states, 54 states have (on average 1.8703703703703705) internal successors, (101), 54 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:56:40,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:56:40,804 INFO L93 Difference]: Finished difference Result 1548 states and 3715 transitions. [2025-04-13 18:56:40,804 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 18:56:40,804 INFO L79 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.8703703703703705) internal successors, (101), 54 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2025-04-13 18:56:40,804 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:56:40,821 INFO L225 Difference]: With dead ends: 1548 [2025-04-13 18:56:40,821 INFO L226 Difference]: Without dead ends: 1395 [2025-04-13 18:56:40,821 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1134 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=796, Invalid=4174, Unknown=0, NotChecked=0, Total=4970 [2025-04-13 18:56:40,822 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 259 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 18:56:40,822 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 44 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 18:56:40,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2025-04-13 18:56:42,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1171. [2025-04-13 18:56:42,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1170 states have (on average 2.493162393162393) internal successors, (2917), 1170 states have internal predecessors, (2917), 0 states have call successors, (0), 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 18:56:42,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 2917 transitions. [2025-04-13 18:56:42,035 INFO L79 Accepts]: Start accepts. Automaton has 1171 states and 2917 transitions. Word has length 53 [2025-04-13 18:56:42,035 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:56:42,035 INFO L485 AbstractCegarLoop]: Abstraction has 1171 states and 2917 transitions. [2025-04-13 18:56:42,035 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 1.8703703703703705) internal successors, (101), 54 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:56:42,036 INFO L278 IsEmpty]: Start isEmpty. Operand 1171 states and 2917 transitions. [2025-04-13 18:56:42,037 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-04-13 18:56:42,037 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:56:42,037 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:56:42,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2025-04-13 18:56:42,237 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2025-04-13 18:56:42,237 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:56:42,238 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:56:42,238 INFO L85 PathProgramCache]: Analyzing trace with hash 2121673435, now seen corresponding path program 40 times [2025-04-13 18:56:42,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:56:42,238 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535862627] [2025-04-13 18:56:42,238 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:56:42,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:56:42,246 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 53 statements into 2 equivalence classes. [2025-04-13 18:56:42,250 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 18:56:42,250 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:56:42,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:56:42,442 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 63 proven. 108 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-04-13 18:56:42,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:56:42,442 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535862627] [2025-04-13 18:56:42,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535862627] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:56:42,442 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858004735] [2025-04-13 18:56:42,442 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:56:42,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:56:42,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:56:42,444 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:56:42,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2025-04-13 18:56:42,558 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 53 statements into 2 equivalence classes. [2025-04-13 18:56:42,600 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 18:56:42,600 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:56:42,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:56:42,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-04-13 18:56:42,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:56:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-04-13 18:56:42,718 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:56:42,733 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:56:42,734 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2025-04-13 18:56:42,762 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-04-13 18:56:42,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858004735] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:56:42,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:56:42,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-04-13 18:56:42,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230168444] [2025-04-13 18:56:42,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:56:42,762 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-04-13 18:56:42,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:56:42,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-04-13 18:56:42,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=548, Unknown=0, NotChecked=0, Total=702 [2025-04-13 18:56:42,763 INFO L87 Difference]: Start difference. First operand 1171 states and 2917 transitions. Second operand has 27 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 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 18:57:05,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:57:05,726 INFO L93 Difference]: Finished difference Result 10042 states and 24230 transitions. [2025-04-13 18:57:05,726 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2025-04-13 18:57:05,727 INFO L79 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 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 53 [2025-04-13 18:57:05,727 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:57:05,754 INFO L225 Difference]: With dead ends: 10042 [2025-04-13 18:57:05,754 INFO L226 Difference]: Without dead ends: 9065 [2025-04-13 18:57:05,757 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17173 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3173, Invalid=37833, Unknown=0, NotChecked=0, Total=41006 [2025-04-13 18:57:05,757 INFO L437 NwaCegarLoop]: 9 mSDtfsCounter, 3992 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3992 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-04-13 18:57:05,758 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3992 Valid, 83 Invalid, 1949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1848 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-04-13 18:57:05,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9065 states. [2025-04-13 18:57:07,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9065 to 2441. [2025-04-13 18:57:07,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2441 states, 2440 states have (on average 2.699590163934426) internal successors, (6587), 2440 states have internal predecessors, (6587), 0 states have call successors, (0), 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 18:57:07,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2441 states to 2441 states and 6587 transitions. [2025-04-13 18:57:07,278 INFO L79 Accepts]: Start accepts. Automaton has 2441 states and 6587 transitions. Word has length 53 [2025-04-13 18:57:07,278 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:57:07,278 INFO L485 AbstractCegarLoop]: Abstraction has 2441 states and 6587 transitions. [2025-04-13 18:57:07,278 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 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 18:57:07,278 INFO L278 IsEmpty]: Start isEmpty. Operand 2441 states and 6587 transitions. [2025-04-13 18:57:07,280 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-04-13 18:57:07,280 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:57:07,280 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:57:07,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2025-04-13 18:57:07,480 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2025-04-13 18:57:07,481 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:57:07,481 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:57:07,481 INFO L85 PathProgramCache]: Analyzing trace with hash -543377159, now seen corresponding path program 41 times [2025-04-13 18:57:07,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:57:07,481 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100701372] [2025-04-13 18:57:07,481 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:57:07,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:57:07,489 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 53 statements into 9 equivalence classes. [2025-04-13 18:57:07,500 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 18:57:07,500 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-04-13 18:57:07,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:57:07,693 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-04-13 18:57:07,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:57:07,693 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100701372] [2025-04-13 18:57:07,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100701372] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:57:07,693 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326416348] [2025-04-13 18:57:07,693 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:57:07,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:57:07,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:57:07,695 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:57:07,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2025-04-13 18:57:07,816 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 53 statements into 9 equivalence classes. [2025-04-13 18:57:07,918 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 18:57:07,918 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-04-13 18:57:07,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:57:07,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 62 conjuncts are in the unsatisfiable core [2025-04-13 18:57:07,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:57:08,481 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:57:08,481 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:57:08,500 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:57:08,500 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2025-04-13 18:57:08,801 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 4 proven. 172 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-04-13 18:57:08,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326416348] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:57:08,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:57:08,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 24, 17] total 45 [2025-04-13 18:57:08,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555658132] [2025-04-13 18:57:08,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:57:08,801 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-13 18:57:08,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:57:08,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-13 18:57:08,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=2023, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 18:57:08,802 INFO L87 Difference]: Start difference. First operand 2441 states and 6587 transitions. Second operand has 47 states, 46 states have (on average 2.5217391304347827) internal successors, (116), 46 states have internal predecessors, (116), 0 states have call successors, (0), 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 18:58:13,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:58:13,454 INFO L93 Difference]: Finished difference Result 35688 states and 90252 transitions. [2025-04-13 18:58:13,455 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 487 states. [2025-04-13 18:58:13,455 INFO L79 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.5217391304347827) internal successors, (116), 46 states have internal predecessors, (116), 0 states have call successors, (0), 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 53 [2025-04-13 18:58:13,455 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:58:13,547 INFO L225 Difference]: With dead ends: 35688 [2025-04-13 18:58:13,547 INFO L226 Difference]: Without dead ends: 33120 [2025-04-13 18:58:13,566 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 514 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115590 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=10313, Invalid=255427, Unknown=0, NotChecked=0, Total=265740 [2025-04-13 18:58:13,566 INFO L437 NwaCegarLoop]: 9 mSDtfsCounter, 5209 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 10111 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5209 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 10240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 10111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:58:13,567 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [5209 Valid, 253 Invalid, 10240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 10111 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2025-04-13 18:58:13,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33120 states. [2025-04-13 18:58:15,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33120 to 3583. [2025-04-13 18:58:15,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3582 states have (on average 2.754048017867113) internal successors, (9865), 3582 states have internal predecessors, (9865), 0 states have call successors, (0), 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 18:58:15,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 9865 transitions. [2025-04-13 18:58:15,755 INFO L79 Accepts]: Start accepts. Automaton has 3583 states and 9865 transitions. Word has length 53 [2025-04-13 18:58:15,756 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:58:15,756 INFO L485 AbstractCegarLoop]: Abstraction has 3583 states and 9865 transitions. [2025-04-13 18:58:15,756 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.5217391304347827) internal successors, (116), 46 states have internal predecessors, (116), 0 states have call successors, (0), 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 18:58:15,756 INFO L278 IsEmpty]: Start isEmpty. Operand 3583 states and 9865 transitions. [2025-04-13 18:58:15,758 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-04-13 18:58:15,758 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:58:15,758 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:58:15,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2025-04-13 18:58:15,958 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:58:15,959 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:58:15,959 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:58:15,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1777330395, now seen corresponding path program 42 times [2025-04-13 18:58:15,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:58:15,959 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098871945] [2025-04-13 18:58:15,959 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:58:15,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:58:15,970 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 53 statements into 9 equivalence classes. [2025-04-13 18:58:15,992 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 18:58:15,992 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-04-13 18:58:15,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:58:16,252 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 173 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-04-13 18:58:16,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:58:16,252 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098871945] [2025-04-13 18:58:16,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098871945] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:58:16,252 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137572194] [2025-04-13 18:58:16,252 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:58:16,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:58:16,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:58:16,254 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:58:16,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2025-04-13 18:58:16,368 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 53 statements into 9 equivalence classes. [2025-04-13 18:58:17,290 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 18:58:17,291 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-04-13 18:58:17,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:58:17,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 68 conjuncts are in the unsatisfiable core [2025-04-13 18:58:17,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:58:17,467 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-13 18:58:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 20 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:58:17,926 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:58:18,997 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2025-04-13 18:58:19,004 INFO L325 Elim1Store]: treesize reduction 5, result has 54.5 percent of original size [2025-04-13 18:58:19,004 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 46 [2025-04-13 18:58:19,474 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 78 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:58:19,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137572194] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:58:19,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:58:19,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 26, 26] total 65 [2025-04-13 18:58:19,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239701157] [2025-04-13 18:58:19,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:58:19,475 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2025-04-13 18:58:19,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:58:19,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2025-04-13 18:58:19,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=3919, Unknown=0, NotChecked=0, Total=4422 [2025-04-13 18:58:19,476 INFO L87 Difference]: Start difference. First operand 3583 states and 9865 transitions. Second operand has 67 states, 66 states have (on average 2.1363636363636362) internal successors, (141), 66 states have internal predecessors, (141), 0 states have call successors, (0), 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 18:59:04,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:59:04,985 INFO L93 Difference]: Finished difference Result 49504 states and 128631 transitions. [2025-04-13 18:59:04,985 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 555 states. [2025-04-13 18:59:04,985 INFO L79 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 2.1363636363636362) internal successors, (141), 66 states have internal predecessors, (141), 0 states have call successors, (0), 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 53 [2025-04-13 18:59:04,985 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:59:05,128 INFO L225 Difference]: With dead ends: 49504 [2025-04-13 18:59:05,128 INFO L226 Difference]: Without dead ends: 45108 [2025-04-13 18:59:05,157 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 603 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162187 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=16701, Invalid=348719, Unknown=0, NotChecked=0, Total=365420 [2025-04-13 18:59:05,157 INFO L437 NwaCegarLoop]: 10 mSDtfsCounter, 8766 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 7067 mSolverCounterSat, 224 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8766 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 7293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 7067 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:59:05,157 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [8766 Valid, 297 Invalid, 7293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 7067 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2025-04-13 18:59:05,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45108 states. [2025-04-13 18:59:08,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45108 to 4966. [2025-04-13 18:59:08,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4966 states, 4965 states have (on average 2.8229607250755286) internal successors, (14016), 4965 states have internal predecessors, (14016), 0 states have call successors, (0), 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 18:59:08,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4966 states to 4966 states and 14016 transitions. [2025-04-13 18:59:08,115 INFO L79 Accepts]: Start accepts. Automaton has 4966 states and 14016 transitions. Word has length 53 [2025-04-13 18:59:08,115 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:59:08,115 INFO L485 AbstractCegarLoop]: Abstraction has 4966 states and 14016 transitions. [2025-04-13 18:59:08,115 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 2.1363636363636362) internal successors, (141), 66 states have internal predecessors, (141), 0 states have call successors, (0), 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 18:59:08,115 INFO L278 IsEmpty]: Start isEmpty. Operand 4966 states and 14016 transitions. [2025-04-13 18:59:08,117 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-04-13 18:59:08,117 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:59:08,117 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:59:08,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2025-04-13 18:59:08,318 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:59:08,318 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:59:08,318 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:59:08,318 INFO L85 PathProgramCache]: Analyzing trace with hash 523359103, now seen corresponding path program 43 times [2025-04-13 18:59:08,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:59:08,318 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299745906] [2025-04-13 18:59:08,318 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:59:08,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:59:08,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-04-13 18:59:08,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-04-13 18:59:08,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:59:08,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:59:09,033 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:59:09,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:59:09,034 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299745906] [2025-04-13 18:59:09,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299745906] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:59:09,034 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500681170] [2025-04-13 18:59:09,034 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:59:09,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:59:09,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:59:09,036 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:59:09,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2025-04-13 18:59:09,155 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-04-13 18:59:09,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-04-13 18:59:09,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:59:09,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:59:09,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-04-13 18:59:09,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:59:09,621 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-04-13 18:59:09,621 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:59:09,846 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:59:09,847 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2025-04-13 18:59:10,090 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-04-13 18:59:10,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500681170] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:59:10,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:59:10,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 17, 16] total 57 [2025-04-13 18:59:10,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231639772] [2025-04-13 18:59:10,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:59:10,090 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2025-04-13 18:59:10,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:59:10,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2025-04-13 18:59:10,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=3240, Unknown=0, NotChecked=0, Total=3422 [2025-04-13 18:59:10,091 INFO L87 Difference]: Start difference. First operand 4966 states and 14016 transitions. Second operand has 59 states, 58 states have (on average 2.293103448275862) internal successors, (133), 58 states have internal predecessors, (133), 0 states have call successors, (0), 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 18:59:32,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:59:32,634 INFO L93 Difference]: Finished difference Result 18381 states and 48801 transitions. [2025-04-13 18:59:32,635 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2025-04-13 18:59:32,635 INFO L79 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.293103448275862) internal successors, (133), 58 states have internal predecessors, (133), 0 states have call successors, (0), 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 54 [2025-04-13 18:59:32,635 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:59:32,701 INFO L225 Difference]: With dead ends: 18381 [2025-04-13 18:59:32,702 INFO L226 Difference]: Without dead ends: 13685 [2025-04-13 18:59:32,711 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5639 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2493, Invalid=23589, Unknown=0, NotChecked=0, Total=26082 [2025-04-13 18:59:32,711 INFO L437 NwaCegarLoop]: 9 mSDtfsCounter, 1330 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 8817 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1330 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 8854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 8817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:59:32,711 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1330 Valid, 250 Invalid, 8854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 8817 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-04-13 18:59:32,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13685 states. [2025-04-13 18:59:33,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13685 to 289. [2025-04-13 18:59:33,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 2.3159722222222223) internal successors, (667), 288 states have internal predecessors, (667), 0 states have call successors, (0), 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 18:59:33,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 667 transitions. [2025-04-13 18:59:33,627 INFO L79 Accepts]: Start accepts. Automaton has 289 states and 667 transitions. Word has length 54 [2025-04-13 18:59:33,627 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:59:33,627 INFO L485 AbstractCegarLoop]: Abstraction has 289 states and 667 transitions. [2025-04-13 18:59:33,627 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.293103448275862) internal successors, (133), 58 states have internal predecessors, (133), 0 states have call successors, (0), 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 18:59:33,627 INFO L278 IsEmpty]: Start isEmpty. Operand 289 states and 667 transitions. [2025-04-13 18:59:33,627 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-04-13 18:59:33,627 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:59:33,628 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:59:33,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2025-04-13 18:59:33,828 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2025-04-13 18:59:33,828 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:59:33,828 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:59:33,828 INFO L85 PathProgramCache]: Analyzing trace with hash 430587745, now seen corresponding path program 44 times [2025-04-13 18:59:33,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:59:33,828 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153103122] [2025-04-13 18:59:33,828 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:59:33,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:59:33,837 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 54 statements into 2 equivalence classes. [2025-04-13 18:59:33,846 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 54 of 54 statements. [2025-04-13 18:59:33,846 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:59:33,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:59:34,076 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-04-13 18:59:34,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:59:34,076 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153103122] [2025-04-13 18:59:34,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153103122] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:59:34,076 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839231067] [2025-04-13 18:59:34,076 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:59:34,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:59:34,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:59:34,078 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:59:34,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2025-04-13 18:59:34,196 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 54 statements into 2 equivalence classes. [2025-04-13 18:59:34,221 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 54 of 54 statements. [2025-04-13 18:59:34,221 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:59:34,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:59:34,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 58 conjuncts are in the unsatisfiable core [2025-04-13 18:59:34,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:59:34,814 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:59:34,814 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:59:34,837 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:59:34,837 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2025-04-13 18:59:34,861 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-04-13 18:59:34,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839231067] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:59:34,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:59:34,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25, 17] total 41 [2025-04-13 18:59:34,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299465705] [2025-04-13 18:59:34,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:59:34,862 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-04-13 18:59:34,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:59:34,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-04-13 18:59:34,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1692, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 18:59:34,862 INFO L87 Difference]: Start difference. First operand 289 states and 667 transitions. Second operand has 43 states, 42 states have (on average 2.238095238095238) internal successors, (94), 42 states have internal predecessors, (94), 0 states have call successors, (0), 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 18:59:39,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:59:39,260 INFO L93 Difference]: Finished difference Result 495 states and 1165 transitions. [2025-04-13 18:59:39,260 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-04-13 18:59:39,260 INFO L79 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.238095238095238) internal successors, (94), 42 states have internal predecessors, (94), 0 states have call successors, (0), 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 54 [2025-04-13 18:59:39,260 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:59:39,282 INFO L225 Difference]: With dead ends: 495 [2025-04-13 18:59:39,283 INFO L226 Difference]: Without dead ends: 486 [2025-04-13 18:59:39,283 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1764 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=576, Invalid=6230, Unknown=0, NotChecked=0, Total=6806 [2025-04-13 18:59:39,283 INFO L437 NwaCegarLoop]: 10 mSDtfsCounter, 886 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 3656 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 3686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 3656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:59:39,283 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 281 Invalid, 3686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 3656 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-04-13 18:59:39,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2025-04-13 18:59:40,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 303. [2025-04-13 18:59:40,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 2.3211920529801326) internal successors, (701), 302 states have internal predecessors, (701), 0 states have call successors, (0), 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 18:59:40,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 701 transitions. [2025-04-13 18:59:40,149 INFO L79 Accepts]: Start accepts. Automaton has 303 states and 701 transitions. Word has length 54 [2025-04-13 18:59:40,150 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:59:40,150 INFO L485 AbstractCegarLoop]: Abstraction has 303 states and 701 transitions. [2025-04-13 18:59:40,150 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.238095238095238) internal successors, (94), 42 states have internal predecessors, (94), 0 states have call successors, (0), 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 18:59:40,150 INFO L278 IsEmpty]: Start isEmpty. Operand 303 states and 701 transitions. [2025-04-13 18:59:40,150 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-04-13 18:59:40,150 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:59:40,151 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:59:40,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2025-04-13 18:59:40,351 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2025-04-13 18:59:40,351 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:59:40,351 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:59:40,351 INFO L85 PathProgramCache]: Analyzing trace with hash -61512447, now seen corresponding path program 45 times [2025-04-13 18:59:40,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:59:40,351 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348774129] [2025-04-13 18:59:40,351 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:59:40,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:59:40,360 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 56 statements into 9 equivalence classes. [2025-04-13 18:59:40,402 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 56 of 56 statements. [2025-04-13 18:59:40,402 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-04-13 18:59:40,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:59:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 100 proven. 93 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2025-04-13 18:59:40,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:59:40,526 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348774129] [2025-04-13 18:59:40,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348774129] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:59:40,526 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932257890] [2025-04-13 18:59:40,526 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:59:40,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:59:40,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:59:40,528 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:59:40,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2025-04-13 18:59:40,647 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 56 statements into 9 equivalence classes. [2025-04-13 18:59:41,007 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 56 of 56 statements. [2025-04-13 18:59:41,007 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-04-13 18:59:41,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:59:41,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-04-13 18:59:41,010 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:59:41,046 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 100 proven. 92 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-04-13 18:59:41,046 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:59:41,135 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 100 proven. 92 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-04-13 18:59:41,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932257890] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:59:41,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:59:41,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 11 [2025-04-13 18:59:41,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642371269] [2025-04-13 18:59:41,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:59:41,135 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-13 18:59:41,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:59:41,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-13 18:59:41,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2025-04-13 18:59:41,136 INFO L87 Difference]: Start difference. First operand 303 states and 701 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 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 18:59:43,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:59:43,905 INFO L93 Difference]: Finished difference Result 1113 states and 2637 transitions. [2025-04-13 18:59:43,906 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 18:59:43,906 INFO L79 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 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 56 [2025-04-13 18:59:43,906 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:59:43,925 INFO L225 Difference]: With dead ends: 1113 [2025-04-13 18:59:43,925 INFO L226 Difference]: Without dead ends: 1031 [2025-04-13 18:59:43,925 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 102 SyntacticMatches, 16 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2025-04-13 18:59:43,926 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 139 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:59:43,926 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 11 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:59:43,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2025-04-13 18:59:45,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 950. [2025-04-13 18:59:45,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 949 states have (on average 2.457323498419389) internal successors, (2332), 949 states have internal predecessors, (2332), 0 states have call successors, (0), 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 18:59:45,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 2332 transitions. [2025-04-13 18:59:45,484 INFO L79 Accepts]: Start accepts. Automaton has 950 states and 2332 transitions. Word has length 56 [2025-04-13 18:59:45,484 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:59:45,484 INFO L485 AbstractCegarLoop]: Abstraction has 950 states and 2332 transitions. [2025-04-13 18:59:45,485 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 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 18:59:45,485 INFO L278 IsEmpty]: Start isEmpty. Operand 950 states and 2332 transitions. [2025-04-13 18:59:45,486 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-04-13 18:59:45,486 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:59:45,486 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:59:45,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2025-04-13 18:59:45,686 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2025-04-13 18:59:45,686 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:59:45,686 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:59:45,686 INFO L85 PathProgramCache]: Analyzing trace with hash -790829919, now seen corresponding path program 46 times [2025-04-13 18:59:45,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:59:45,687 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422704355] [2025-04-13 18:59:45,687 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:59:45,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:59:45,695 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 58 statements into 2 equivalence classes. [2025-04-13 18:59:45,702 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 58 of 58 statements. [2025-04-13 18:59:45,702 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:59:45,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:59:45,897 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2025-04-13 18:59:45,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:59:45,897 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422704355] [2025-04-13 18:59:45,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422704355] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:59:45,897 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329140687] [2025-04-13 18:59:45,897 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:59:45,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:59:45,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:59:45,899 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:59:45,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2025-04-13 18:59:46,023 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 58 statements into 2 equivalence classes. [2025-04-13 18:59:46,071 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 58 of 58 statements. [2025-04-13 18:59:46,072 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:59:46,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:59:46,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 80 conjuncts are in the unsatisfiable core [2025-04-13 18:59:46,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:59:46,649 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 269 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:59:46,649 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:59:46,658 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:59:46,658 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2025-04-13 18:59:46,890 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 9 proven. 216 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-04-13 18:59:46,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329140687] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:59:46,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:59:46,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 28, 19] total 48 [2025-04-13 18:59:46,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124736972] [2025-04-13 18:59:46,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:59:46,891 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-04-13 18:59:46,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:59:46,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-04-13 18:59:46,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=2273, Unknown=0, NotChecked=0, Total=2450 [2025-04-13 18:59:46,892 INFO L87 Difference]: Start difference. First operand 950 states and 2332 transitions. Second operand has 50 states, 49 states have (on average 2.6530612244897958) internal successors, (130), 49 states have internal predecessors, (130), 0 states have call successors, (0), 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 18:59:56,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:59:56,083 INFO L93 Difference]: Finished difference Result 2257 states and 5387 transitions. [2025-04-13 18:59:56,083 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2025-04-13 18:59:56,083 INFO L79 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.6530612244897958) internal successors, (130), 49 states have internal predecessors, (130), 0 states have call successors, (0), 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 58 [2025-04-13 18:59:56,084 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:59:56,112 INFO L225 Difference]: With dead ends: 2257 [2025-04-13 18:59:56,112 INFO L226 Difference]: Without dead ends: 2083 [2025-04-13 18:59:56,113 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3206 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=603, Invalid=9903, Unknown=0, NotChecked=0, Total=10506 [2025-04-13 18:59:56,113 INFO L437 NwaCegarLoop]: 10 mSDtfsCounter, 738 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 5563 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 5567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:59:56,113 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 224 Invalid, 5567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5563 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-04-13 18:59:56,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2025-04-13 18:59:57,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 1010. [2025-04-13 18:59:57,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 1009 states have (on average 2.5173439048562933) internal successors, (2540), 1009 states have internal predecessors, (2540), 0 states have call successors, (0), 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 18:59:57,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 2540 transitions. [2025-04-13 18:59:57,734 INFO L79 Accepts]: Start accepts. Automaton has 1010 states and 2540 transitions. Word has length 58 [2025-04-13 18:59:57,734 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:59:57,734 INFO L485 AbstractCegarLoop]: Abstraction has 1010 states and 2540 transitions. [2025-04-13 18:59:57,735 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.6530612244897958) internal successors, (130), 49 states have internal predecessors, (130), 0 states have call successors, (0), 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 18:59:57,735 INFO L278 IsEmpty]: Start isEmpty. Operand 1010 states and 2540 transitions. [2025-04-13 18:59:57,736 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-04-13 18:59:57,736 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:59:57,736 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:59:57,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2025-04-13 18:59:57,936 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:59:57,936 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:59:57,936 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:59:57,936 INFO L85 PathProgramCache]: Analyzing trace with hash -2397633, now seen corresponding path program 47 times [2025-04-13 18:59:57,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:59:57,936 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471298251] [2025-04-13 18:59:57,937 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:59:57,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:59:57,945 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 58 statements into 10 equivalence classes. [2025-04-13 18:59:57,959 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 58 of 58 statements. [2025-04-13 18:59:57,959 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-04-13 18:59:57,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:59:58,165 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-04-13 18:59:58,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:59:58,165 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471298251] [2025-04-13 18:59:58,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471298251] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:59:58,165 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426640970] [2025-04-13 18:59:58,165 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:59:58,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:59:58,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:59:58,168 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:59:58,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2025-04-13 18:59:58,309 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 58 statements into 10 equivalence classes. [2025-04-13 18:59:58,415 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 58 of 58 statements. [2025-04-13 18:59:58,415 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-04-13 18:59:58,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:59:58,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 86 conjuncts are in the unsatisfiable core [2025-04-13 18:59:58,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:59:58,598 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-13 18:59:59,039 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:59:59,039 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:59:59,651 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2025-04-13 18:59:59,657 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:59:59,657 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 47 [2025-04-13 18:59:59,704 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 1 proven. 233 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-04-13 18:59:59,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426640970] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:59:59,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:59:59,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 29, 21] total 58 [2025-04-13 18:59:59,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891876830] [2025-04-13 18:59:59,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:59:59,704 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2025-04-13 18:59:59,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:59:59,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2025-04-13 18:59:59,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=3305, Unknown=0, NotChecked=0, Total=3540 [2025-04-13 18:59:59,705 INFO L87 Difference]: Start difference. First operand 1010 states and 2540 transitions. Second operand has 60 states, 59 states have (on average 2.4237288135593222) internal successors, (143), 59 states have internal predecessors, (143), 0 states have call successors, (0), 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 19:00:31,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 19:00:31,411 INFO L93 Difference]: Finished difference Result 12334 states and 30295 transitions. [2025-04-13 19:00:31,411 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2025-04-13 19:00:31,411 INFO L79 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.4237288135593222) internal successors, (143), 59 states have internal predecessors, (143), 0 states have call successors, (0), 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 58 [2025-04-13 19:00:31,412 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 19:00:31,449 INFO L225 Difference]: With dead ends: 12334 [2025-04-13 19:00:31,449 INFO L226 Difference]: Without dead ends: 11728 [2025-04-13 19:00:31,452 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18717 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=3967, Invalid=45985, Unknown=0, NotChecked=0, Total=49952 [2025-04-13 19:00:31,453 INFO L437 NwaCegarLoop]: 11 mSDtfsCounter, 2038 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 14585 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2038 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 14821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 14585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2025-04-13 19:00:31,453 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2038 Valid, 386 Invalid, 14821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 14585 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2025-04-13 19:00:31,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11728 states. [2025-04-13 19:00:35,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11728 to 2966. [2025-04-13 19:00:35,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2966 states, 2965 states have (on average 2.902529510961214) internal successors, (8606), 2965 states have internal predecessors, (8606), 0 states have call successors, (0), 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 19:00:35,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2966 states to 2966 states and 8606 transitions. [2025-04-13 19:00:35,421 INFO L79 Accepts]: Start accepts. Automaton has 2966 states and 8606 transitions. Word has length 58 [2025-04-13 19:00:35,421 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 19:00:35,421 INFO L485 AbstractCegarLoop]: Abstraction has 2966 states and 8606 transitions. [2025-04-13 19:00:35,421 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.4237288135593222) internal successors, (143), 59 states have internal predecessors, (143), 0 states have call successors, (0), 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 19:00:35,422 INFO L278 IsEmpty]: Start isEmpty. Operand 2966 states and 8606 transitions. [2025-04-13 19:00:35,424 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-04-13 19:00:35,424 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 19:00:35,424 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:00:35,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2025-04-13 19:00:35,624 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2025-04-13 19:00:35,624 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 19:00:35,625 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:00:35,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1375543969, now seen corresponding path program 48 times [2025-04-13 19:00:35,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:00:35,625 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119849120] [2025-04-13 19:00:35,625 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 19:00:35,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:00:35,633 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 58 statements into 10 equivalence classes. [2025-04-13 19:00:35,654 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 58 of 58 statements. [2025-04-13 19:00:35,654 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-04-13 19:00:35,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:00:36,017 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 31 proven. 175 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-04-13 19:00:36,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:00:36,018 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119849120] [2025-04-13 19:00:36,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119849120] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 19:00:36,018 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144284017] [2025-04-13 19:00:36,018 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 19:00:36,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:00:36,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:00:36,019 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 19:00:36,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2025-04-13 19:00:36,153 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 58 statements into 10 equivalence classes. [2025-04-13 19:00:36,587 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 58 of 58 statements. [2025-04-13 19:00:36,587 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-04-13 19:00:36,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:00:36,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-04-13 19:00:36,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 19:00:49,289 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 19:00:49,290 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 10 [2025-04-13 19:00:49,294 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 92 proven. 110 refuted. 4 times theorem prover too weak. 64 trivial. 0 not checked. [2025-04-13 19:00:49,294 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 19:00:49,356 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 19:00:49,356 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2025-04-13 19:00:49,908 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 92 proven. 114 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-04-13 19:00:49,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144284017] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 19:00:49,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 19:00:49,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 60 [2025-04-13 19:00:49,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796632334] [2025-04-13 19:00:49,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 19:00:49,908 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2025-04-13 19:00:49,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:00:49,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2025-04-13 19:00:49,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=781, Invalid=2998, Unknown=3, NotChecked=0, Total=3782 [2025-04-13 19:00:49,909 INFO L87 Difference]: Start difference. First operand 2966 states and 8606 transitions. Second operand has 62 states, 61 states have (on average 1.9672131147540983) internal successors, (120), 61 states have internal predecessors, (120), 0 states have call successors, (0), 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 19:01:44,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 19:01:44,131 INFO L93 Difference]: Finished difference Result 15795 states and 43956 transitions. [2025-04-13 19:01:44,131 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 19:01:44,131 INFO L79 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.9672131147540983) internal successors, (120), 61 states have internal predecessors, (120), 0 states have call successors, (0), 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 58 [2025-04-13 19:01:44,131 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 19:01:44,169 INFO L225 Difference]: With dead ends: 15795 [2025-04-13 19:01:44,169 INFO L226 Difference]: Without dead ends: 8310 [2025-04-13 19:01:44,177 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1555 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=1204, Invalid=4645, Unknown=3, NotChecked=0, Total=5852 [2025-04-13 19:01:44,178 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 182 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 19:01:44,178 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 28 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 19:01:44,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8310 states. [2025-04-13 19:02:01,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8310 to 6368. [2025-04-13 19:02:01,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6368 states, 6367 states have (on average 2.772106172451704) internal successors, (17650), 6367 states have internal predecessors, (17650), 0 states have call successors, (0), 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 19:02:01,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6368 states to 6368 states and 17650 transitions. [2025-04-13 19:02:01,371 INFO L79 Accepts]: Start accepts. Automaton has 6368 states and 17650 transitions. Word has length 58 [2025-04-13 19:02:01,372 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 19:02:01,372 INFO L485 AbstractCegarLoop]: Abstraction has 6368 states and 17650 transitions. [2025-04-13 19:02:01,372 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.9672131147540983) internal successors, (120), 61 states have internal predecessors, (120), 0 states have call successors, (0), 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 19:02:01,372 INFO L278 IsEmpty]: Start isEmpty. Operand 6368 states and 17650 transitions. [2025-04-13 19:02:01,379 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-04-13 19:02:01,379 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 19:02:01,379 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:02:01,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2025-04-13 19:02:01,579 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:02:01,579 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 19:02:01,580 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:02:01,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2031457217, now seen corresponding path program 49 times [2025-04-13 19:02:01,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:02:01,580 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698119954] [2025-04-13 19:02:01,580 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 19:02:01,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:02:01,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-04-13 19:02:01,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-04-13 19:02:01,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:02:01,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:02:02,325 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:02:02,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:02:02,326 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698119954] [2025-04-13 19:02:02,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698119954] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 19:02:02,326 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598800700] [2025-04-13 19:02:02,326 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 19:02:02,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:02:02,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:02:02,328 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 19:02:02,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2025-04-13 19:02:02,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-04-13 19:02:02,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-04-13 19:02:02,486 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:02:02,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:02:02,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-04-13 19:02:02,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 19:02:03,017 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-04-13 19:02:03,017 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 19:02:03,162 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 19:02:03,162 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2025-04-13 19:02:03,455 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 219 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-04-13 19:02:03,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598800700] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 19:02:03,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 19:02:03,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 19, 14] total 60 [2025-04-13 19:02:03,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753650369] [2025-04-13 19:02:03,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 19:02:03,455 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2025-04-13 19:02:03,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:02:03,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2025-04-13 19:02:03,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=3582, Unknown=0, NotChecked=0, Total=3782 [2025-04-13 19:02:03,456 INFO L87 Difference]: Start difference. First operand 6368 states and 17650 transitions. Second operand has 62 states, 61 states have (on average 2.377049180327869) internal successors, (145), 61 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2025-04-13 19:04:09,902 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 19:04:09,902 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 19:04:09,913 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 378 states. [2025-04-13 19:04:09,919 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 421 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65885 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=6471, Invalid=172035, Unknown=0, NotChecked=0, Total=178506 [2025-04-13 19:04:09,920 INFO L437 NwaCegarLoop]: 10 mSDtfsCounter, 3177 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 4894 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3177 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 5095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 4894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-04-13 19:04:09,920 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3177 Valid, 259 Invalid, 5095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 4894 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-04-13 19:04:09,921 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 19:04:09,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2025-04-13 19:04:10,121 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2025-04-13 19:04:10,121 WARN L610 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (6368states) and FLOYD_HOARE automaton (currently 378 states, 62 states before enhancement),while ReachableStatesComputation was computing reachable states (11015 states constructed, input type IntersectNwa). [2025-04-13 19:04:10,123 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 19:04:10,123 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 19:04:10,125 INFO L422 BasicCegarLoop]: Path program histogram: [49, 1, 1, 1] [2025-04-13 19:04:10,127 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 19:04:10,127 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 19:04:10,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 07:04:10 BasicIcfg [2025-04-13 19:04:10,128 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 19:04:10,128 INFO L158 Benchmark]: Toolchain (without parser) took 846214.18ms. Allocated memory was 142.6MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 99.1MB in the beginning and 989.3MB in the end (delta: -890.2MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2025-04-13 19:04:10,128 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 159.4MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:04:10,128 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.93ms. Allocated memory is still 142.6MB. Free memory was 99.1MB in the beginning and 84.4MB in the end (delta: 14.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 19:04:10,128 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.11ms. Allocated memory is still 142.6MB. Free memory was 84.4MB in the beginning and 82.2MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 19:04:10,129 INFO L158 Benchmark]: Boogie Preprocessor took 28.98ms. Allocated memory is still 142.6MB. Free memory was 82.2MB in the beginning and 80.2MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:04:10,129 INFO L158 Benchmark]: RCFGBuilder took 498.51ms. Allocated memory is still 142.6MB. Free memory was 80.2MB in the beginning and 38.9MB in the end (delta: 41.3MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. [2025-04-13 19:04:10,129 INFO L158 Benchmark]: TraceAbstraction took 845464.52ms. Allocated memory was 142.6MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 38.9MB in the beginning and 989.3MB in the end (delta: -950.3MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2025-04-13 19:04:10,129 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 159.4MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 193.93ms. Allocated memory is still 142.6MB. Free memory was 99.1MB in the beginning and 84.4MB in the end (delta: 14.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.11ms. Allocated memory is still 142.6MB. Free memory was 84.4MB in the beginning and 82.2MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.98ms. Allocated memory is still 142.6MB. Free memory was 82.2MB in the beginning and 80.2MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 498.51ms. Allocated memory is still 142.6MB. Free memory was 80.2MB in the beginning and 38.9MB in the end (delta: 41.3MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. * TraceAbstraction took 845464.52ms. Allocated memory was 142.6MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 38.9MB in the beginning and 989.3MB in the end (delta: -950.3MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while NwaCegarLoop was constructing difference of abstraction (6368states) and FLOYD_HOARE automaton (currently 378 states, 62 states before enhancement),while ReachableStatesComputation was computing reachable states (11015 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (6368states) and FLOYD_HOARE automaton (currently 378 states, 62 states before enhancement),while ReachableStatesComputation was computing reachable states (11015 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (6368states) and FLOYD_HOARE automaton (currently 378 states, 62 states before enhancement),while ReachableStatesComputation was computing reachable states (11015 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 29 locations, 33 edges, 3 error locations. Started 1 CEGAR loops. OverallTime: 845.4s, OverallIterations: 52, TraceHistogramMax: 9, PathProgramHistogramMax: 49, EmptinessCheckTime: 0.1s, AutomataDifference: 689.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 56403 SdHoareTripleChecker+Valid, 74.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56403 mSDsluCounter, 5246 SdHoareTripleChecker+Invalid, 66.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4961 mSDsCounter, 2470 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 145210 IncrementalHoareTripleChecker+Invalid, 147686 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2470 mSolverCounterUnsat, 285 mSDtfsCounter, 145210 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9079 GetRequests, 3109 SyntacticMatches, 64 SemanticMatches, 5906 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640461 ImplicationChecksByTransitivity, 156.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6368occurred in iteration=51, InterpolantAutomatonStates: 4445, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 62.6s AutomataMinimizationTime, 51 MinimizatonAttempts, 246857 StatesRemovedByMinimization, 46 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 6.2s SatisfiabilityAnalysisTime, 71.7s InterpolantComputationTime, 4167 NumberOfCodeBlocks, 4147 NumberOfCodeBlocksAsserted, 413 NumberOfCheckSat, 6078 ConstructedInterpolants, 209 QuantifiedInterpolants, 52990 SizeOfPredicates, 318 NumberOfNonLiveVariables, 13092 ConjunctsInSsa, 1754 ConjunctsInUnsatCore, 150 InterpolantComputations, 3 PerfectInterpolantSequences, 4840/18824 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown