/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/parallel-misc-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 18:04:29,990 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 18:04:30,048 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 18:04:30,051 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 18:04:30,057 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 18:04:30,085 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 18:04:30,086 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 18:04:30,087 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 18:04:30,087 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 18:04:30,088 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 18:04:30,088 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 18:04:30,088 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 18:04:30,089 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 18:04:30,089 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 18:04:30,089 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 18:04:30,089 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 18:04:30,089 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 18:04:30,089 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 18:04:30,089 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 18:04:30,089 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 18:04:30,089 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 18:04:30,089 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 18:04:30,090 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 18:04:30,090 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 18:04:30,090 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 18:04:30,090 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 18:04:30,090 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 18:04:30,090 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 18:04:30,090 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 18:04:30,090 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 18:04:30,090 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 18:04:30,090 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 18:04:30,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:04:30,090 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 18:04:30,090 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 18:04:30,090 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 18:04:30,090 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 18:04:30,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:04:30,091 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 18:04:30,091 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 18:04:30,091 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 18:04:30,091 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 18:04:30,091 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 18:04:30,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 18:04:30,091 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 18:04:30,091 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 18:04:30,091 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 18:04:30,091 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 18:04:30,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 18:04:30,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 18:04:30,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 18:04:30,341 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 18:04:30,342 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 18:04:30,342 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c [2025-04-13 18:04:31,748 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b98f4aba/f8e9068ed6dd46ea8844652b1ae57f13/FLAG5cc0a0533 [2025-04-13 18:04:31,986 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 18:04:31,986 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c [2025-04-13 18:04:32,001 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b98f4aba/f8e9068ed6dd46ea8844652b1ae57f13/FLAG5cc0a0533 [2025-04-13 18:04:32,799 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b98f4aba/f8e9068ed6dd46ea8844652b1ae57f13 [2025-04-13 18:04:32,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 18:04:32,802 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 18:04:32,803 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 18:04:32,803 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 18:04:32,806 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 18:04:32,807 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 06:04:32" (1/1) ... [2025-04-13 18:04:32,807 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@635fc538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:04:32, skipping insertion in model container [2025-04-13 18:04:32,808 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 06:04:32" (1/1) ... [2025-04-13 18:04:32,819 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 18:04:33,016 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/parallel-misc-5.wvr.c[3066,3079] [2025-04-13 18:04:33,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 18:04:33,035 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 18:04:33,074 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/parallel-misc-5.wvr.c[3066,3079] [2025-04-13 18:04:33,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 18:04:33,087 INFO L204 MainTranslator]: Completed translation [2025-04-13 18:04:33,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:04:33 WrapperNode [2025-04-13 18:04:33,088 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 18:04:33,093 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 18:04:33,093 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 18:04:33,093 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 18:04:33,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:04:33" (1/1) ... [2025-04-13 18:04:33,108 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:04:33" (1/1) ... [2025-04-13 18:04:33,131 INFO L138 Inliner]: procedures = 21, calls = 30, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 129 [2025-04-13 18:04:33,132 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 18:04:33,132 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 18:04:33,132 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 18:04:33,132 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 18:04:33,143 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:04:33" (1/1) ... [2025-04-13 18:04:33,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:04:33" (1/1) ... [2025-04-13 18:04:33,145 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:04:33" (1/1) ... [2025-04-13 18:04:33,164 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-04-13 18:04:33,164 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:04:33" (1/1) ... [2025-04-13 18:04:33,164 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:04:33" (1/1) ... [2025-04-13 18:04:33,167 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:04:33" (1/1) ... [2025-04-13 18:04:33,168 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:04:33" (1/1) ... [2025-04-13 18:04:33,171 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:04:33" (1/1) ... [2025-04-13 18:04:33,172 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:04:33" (1/1) ... [2025-04-13 18:04:33,172 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:04:33" (1/1) ... [2025-04-13 18:04:33,179 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 18:04:33,180 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 18:04:33,180 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 18:04:33,180 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 18:04:33,182 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:04:33" (1/1) ... [2025-04-13 18:04:33,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:04:33,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:04:33,209 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 18:04:33,211 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 18:04:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 18:04:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 18:04:33,229 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 18:04:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 18:04:33,229 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 18:04:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-13 18:04:33,229 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-13 18:04:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 18:04:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 18:04:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 18:04:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 18:04:33,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 18:04:33,230 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 18:04:33,299 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 18:04:33,300 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 18:04:33,461 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 18:04:33,462 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 18:04:33,462 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 18:04:33,602 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 18:04:33,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 06:04:33 BoogieIcfgContainer [2025-04-13 18:04:33,602 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 18:04:33,604 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 18:04:33,605 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 18:04:33,608 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 18:04:33,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 06:04:32" (1/3) ... [2025-04-13 18:04:33,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e48943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 06:04:33, skipping insertion in model container [2025-04-13 18:04:33,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:04:33" (2/3) ... [2025-04-13 18:04:33,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e48943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 06:04:33, skipping insertion in model container [2025-04-13 18:04:33,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 06:04:33" (3/3) ... [2025-04-13 18:04:33,610 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2025-04-13 18:04:33,621 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 18:04:33,622 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-5.wvr.c that has 4 procedures, 31 locations, 31 edges, 1 initial locations, 2 loop locations, and 1 error locations. [2025-04-13 18:04:33,622 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 18:04:33,668 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-13 18:04:33,690 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 34 transitions, 89 flow [2025-04-13 18:04:33,742 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 540 states, 539 states have (on average 3.3951762523191094) internal successors, (1830), 539 states have internal predecessors, (1830), 0 states have call successors, (0), 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 18:04:33,762 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 18:04:33,770 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;@315ce60f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 18:04:33,771 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-13 18:04:33,776 INFO L278 IsEmpty]: Start isEmpty. Operand has 540 states, 539 states have (on average 3.3951762523191094) internal successors, (1830), 539 states have internal predecessors, (1830), 0 states have call successors, (0), 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 18:04:33,790 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 18:04:33,790 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:04:33,791 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:04:33,791 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:04:33,794 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:04:33,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1059216819, now seen corresponding path program 1 times [2025-04-13 18:04:33,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:04:33,799 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027981039] [2025-04-13 18:04:33,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:04:33,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:04:33,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 18:04:33,889 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 18:04:33,890 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:04:33,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:34,183 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 18:04:34,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:04:34,184 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027981039] [2025-04-13 18:04:34,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027981039] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:04:34,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:04:34,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 18:04:34,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039480175] [2025-04-13 18:04:34,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:04:34,188 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 18:04:34,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:04:34,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 18:04:34,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:04:34,205 INFO L87 Difference]: Start difference. First operand has 540 states, 539 states have (on average 3.3951762523191094) internal successors, (1830), 539 states have internal predecessors, (1830), 0 states have call successors, (0), 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 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 18:04:34,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:04:34,371 INFO L93 Difference]: Finished difference Result 586 states and 1932 transitions. [2025-04-13 18:04:34,372 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 18:04:34,373 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 18:04:34,373 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:04:34,389 INFO L225 Difference]: With dead ends: 586 [2025-04-13 18:04:34,389 INFO L226 Difference]: Without dead ends: 480 [2025-04-13 18:04:34,392 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:04:34,396 INFO L437 NwaCegarLoop]: 8 mSDtfsCounter, 37 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:04:34,396 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 14 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:04:34,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2025-04-13 18:04:34,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 480. [2025-04-13 18:04:34,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 3.407098121085595) internal successors, (1632), 479 states have internal predecessors, (1632), 0 states have call successors, (0), 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 18:04:34,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1632 transitions. [2025-04-13 18:04:34,478 INFO L79 Accepts]: Start accepts. Automaton has 480 states and 1632 transitions. Word has length 20 [2025-04-13 18:04:34,479 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:04:34,479 INFO L485 AbstractCegarLoop]: Abstraction has 480 states and 1632 transitions. [2025-04-13 18:04:34,479 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 18:04:34,479 INFO L278 IsEmpty]: Start isEmpty. Operand 480 states and 1632 transitions. [2025-04-13 18:04:34,483 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 18:04:34,484 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:04:34,484 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:04:34,484 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 18:04:34,484 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:04:34,484 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:04:34,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1476570435, now seen corresponding path program 2 times [2025-04-13 18:04:34,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:04:34,485 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685962620] [2025-04-13 18:04:34,485 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:04:34,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:04:34,495 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 1 equivalence classes. [2025-04-13 18:04:34,508 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 18:04:34,509 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 18:04:34,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:34,662 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 18:04:34,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:04:34,663 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685962620] [2025-04-13 18:04:34,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685962620] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:04:34,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:04:34,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 18:04:34,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207439915] [2025-04-13 18:04:34,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:04:34,664 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 18:04:34,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:04:34,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 18:04:34,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:04:34,665 INFO L87 Difference]: Start difference. First operand 480 states and 1632 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 18:04:34,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:04:34,849 INFO L93 Difference]: Finished difference Result 634 states and 2132 transitions. [2025-04-13 18:04:34,849 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 18:04:34,849 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 18:04:34,849 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:04:34,857 INFO L225 Difference]: With dead ends: 634 [2025-04-13 18:04:34,857 INFO L226 Difference]: Without dead ends: 564 [2025-04-13 18:04:34,857 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:04:34,858 INFO L437 NwaCegarLoop]: 8 mSDtfsCounter, 46 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:04:34,858 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 17 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:04:34,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2025-04-13 18:04:34,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 474. [2025-04-13 18:04:34,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 473 states have (on average 3.443974630021142) internal successors, (1629), 473 states have internal predecessors, (1629), 0 states have call successors, (0), 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 18:04:34,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 1629 transitions. [2025-04-13 18:04:34,901 INFO L79 Accepts]: Start accepts. Automaton has 474 states and 1629 transitions. Word has length 20 [2025-04-13 18:04:34,902 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:04:34,902 INFO L485 AbstractCegarLoop]: Abstraction has 474 states and 1629 transitions. [2025-04-13 18:04:34,902 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 18:04:34,902 INFO L278 IsEmpty]: Start isEmpty. Operand 474 states and 1629 transitions. [2025-04-13 18:04:34,906 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 18:04:34,906 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:04:34,906 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:04:34,906 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 18:04:34,906 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:04:34,907 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:04:34,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1375054307, now seen corresponding path program 3 times [2025-04-13 18:04:34,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:04:34,907 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323129387] [2025-04-13 18:04:34,907 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:04:34,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:04:34,914 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 1 equivalence classes. [2025-04-13 18:04:34,919 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 18:04:34,920 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 18:04:34,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:35,008 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 18:04:35,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:04:35,009 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323129387] [2025-04-13 18:04:35,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323129387] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:04:35,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:04:35,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 18:04:35,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563218202] [2025-04-13 18:04:35,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:04:35,009 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 18:04:35,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:04:35,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 18:04:35,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:04:35,010 INFO L87 Difference]: Start difference. First operand 474 states and 1629 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 18:04:35,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:04:35,143 INFO L93 Difference]: Finished difference Result 654 states and 2230 transitions. [2025-04-13 18:04:35,143 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 18:04:35,143 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 18:04:35,143 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:04:35,148 INFO L225 Difference]: With dead ends: 654 [2025-04-13 18:04:35,148 INFO L226 Difference]: Without dead ends: 602 [2025-04-13 18:04:35,149 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:04:35,150 INFO L437 NwaCegarLoop]: 8 mSDtfsCounter, 42 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:04:35,150 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 17 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:04:35,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2025-04-13 18:04:35,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 506. [2025-04-13 18:04:35,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 505 states have (on average 3.495049504950495) internal successors, (1765), 505 states have internal predecessors, (1765), 0 states have call successors, (0), 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 18:04:35,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 1765 transitions. [2025-04-13 18:04:35,183 INFO L79 Accepts]: Start accepts. Automaton has 506 states and 1765 transitions. Word has length 20 [2025-04-13 18:04:35,183 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:04:35,183 INFO L485 AbstractCegarLoop]: Abstraction has 506 states and 1765 transitions. [2025-04-13 18:04:35,183 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 18:04:35,183 INFO L278 IsEmpty]: Start isEmpty. Operand 506 states and 1765 transitions. [2025-04-13 18:04:35,185 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 18:04:35,185 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:04:35,185 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:04:35,185 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 18:04:35,185 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:04:35,186 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:04:35,186 INFO L85 PathProgramCache]: Analyzing trace with hash 720485261, now seen corresponding path program 4 times [2025-04-13 18:04:35,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:04:35,186 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652776583] [2025-04-13 18:04:35,186 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:04:35,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:04:35,193 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 18:04:35,200 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 18:04:35,200 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:04:35,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:35,338 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 18:04:35,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:04:35,339 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652776583] [2025-04-13 18:04:35,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652776583] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:04:35,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:04:35,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 18:04:35,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621973080] [2025-04-13 18:04:35,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:04:35,339 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 18:04:35,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:04:35,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 18:04:35,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:04:35,340 INFO L87 Difference]: Start difference. First operand 506 states and 1765 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 18:04:35,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:04:35,542 INFO L93 Difference]: Finished difference Result 1154 states and 4084 transitions. [2025-04-13 18:04:35,543 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 18:04:35,543 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 18:04:35,543 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:04:35,551 INFO L225 Difference]: With dead ends: 1154 [2025-04-13 18:04:35,551 INFO L226 Difference]: Without dead ends: 690 [2025-04-13 18:04:35,553 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-04-13 18:04:35,555 INFO L437 NwaCegarLoop]: 6 mSDtfsCounter, 100 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:04:35,555 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 17 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:04:35,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2025-04-13 18:04:35,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2025-04-13 18:04:35,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 689 states have (on average 3.447024673439768) internal successors, (2375), 689 states have internal predecessors, (2375), 0 states have call successors, (0), 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 18:04:35,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 2375 transitions. [2025-04-13 18:04:35,624 INFO L79 Accepts]: Start accepts. Automaton has 690 states and 2375 transitions. Word has length 20 [2025-04-13 18:04:35,624 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:04:35,624 INFO L485 AbstractCegarLoop]: Abstraction has 690 states and 2375 transitions. [2025-04-13 18:04:35,625 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 18:04:35,625 INFO L278 IsEmpty]: Start isEmpty. Operand 690 states and 2375 transitions. [2025-04-13 18:04:35,626 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-13 18:04:35,627 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:04:35,627 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:04:35,627 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 18:04:35,627 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:04:35,628 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:04:35,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1886195334, now seen corresponding path program 1 times [2025-04-13 18:04:35,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:04:35,628 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975204764] [2025-04-13 18:04:35,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:04:35,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:04:35,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-13 18:04:35,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:04:35,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:04:35,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:35,685 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 18:04:35,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:04:35,685 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975204764] [2025-04-13 18:04:35,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975204764] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:04:35,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:04:35,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 18:04:35,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958581690] [2025-04-13 18:04:35,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:04:35,686 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 18:04:35,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:04:35,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 18:04:35,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 18:04:35,687 INFO L87 Difference]: Start difference. First operand 690 states and 2375 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 18:04:35,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:04:35,790 INFO L93 Difference]: Finished difference Result 1376 states and 4831 transitions. [2025-04-13 18:04:35,790 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 18:04:35,790 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 18:04:35,790 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:04:35,797 INFO L225 Difference]: With dead ends: 1376 [2025-04-13 18:04:35,797 INFO L226 Difference]: Without dead ends: 926 [2025-04-13 18:04:35,798 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 18:04:35,800 INFO L437 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:04:35,801 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 16 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 18:04:35,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2025-04-13 18:04:35,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 800. [2025-04-13 18:04:35,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 799 states have (on average 3.458072590738423) internal successors, (2763), 799 states have internal predecessors, (2763), 0 states have call successors, (0), 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 18:04:35,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 2763 transitions. [2025-04-13 18:04:35,891 INFO L79 Accepts]: Start accepts. Automaton has 800 states and 2763 transitions. Word has length 23 [2025-04-13 18:04:35,891 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:04:35,891 INFO L485 AbstractCegarLoop]: Abstraction has 800 states and 2763 transitions. [2025-04-13 18:04:35,891 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 18:04:35,891 INFO L278 IsEmpty]: Start isEmpty. Operand 800 states and 2763 transitions. [2025-04-13 18:04:35,894 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-13 18:04:35,894 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:04:35,895 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:04:35,895 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 18:04:35,895 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:04:35,896 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:04:35,896 INFO L85 PathProgramCache]: Analyzing trace with hash -785053324, now seen corresponding path program 1 times [2025-04-13 18:04:35,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:04:35,896 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170863103] [2025-04-13 18:04:35,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:04:35,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:04:35,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-13 18:04:35,908 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:04:35,908 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:04:35,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:35,951 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 18:04:35,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:04:35,952 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170863103] [2025-04-13 18:04:35,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170863103] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:04:35,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:04:35,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 18:04:35,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308873190] [2025-04-13 18:04:35,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:04:35,952 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 18:04:35,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:04:35,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 18:04:35,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 18:04:35,953 INFO L87 Difference]: Start difference. First operand 800 states and 2763 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 18:04:36,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:04:36,114 INFO L93 Difference]: Finished difference Result 1556 states and 5502 transitions. [2025-04-13 18:04:36,115 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 18:04:36,115 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 18:04:36,115 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:04:36,124 INFO L225 Difference]: With dead ends: 1556 [2025-04-13 18:04:36,125 INFO L226 Difference]: Without dead ends: 1040 [2025-04-13 18:04:36,126 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 18:04:36,127 INFO L437 NwaCegarLoop]: 9 mSDtfsCounter, 19 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:04:36,127 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 16 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 18:04:36,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2025-04-13 18:04:36,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 918. [2025-04-13 18:04:36,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 917 states have (on average 3.4645583424209376) internal successors, (3177), 917 states have internal predecessors, (3177), 0 states have call successors, (0), 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 18:04:36,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 3177 transitions. [2025-04-13 18:04:36,232 INFO L79 Accepts]: Start accepts. Automaton has 918 states and 3177 transitions. Word has length 23 [2025-04-13 18:04:36,232 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:04:36,232 INFO L485 AbstractCegarLoop]: Abstraction has 918 states and 3177 transitions. [2025-04-13 18:04:36,232 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 18:04:36,233 INFO L278 IsEmpty]: Start isEmpty. Operand 918 states and 3177 transitions. [2025-04-13 18:04:36,236 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:04:36,236 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:04:36,236 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:04:36,236 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-13 18:04:36,236 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:04:36,237 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:04:36,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1184204203, now seen corresponding path program 1 times [2025-04-13 18:04:36,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:04:36,237 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32293549] [2025-04-13 18:04:36,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:04:36,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:04:36,243 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-13 18:04:36,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:04:36,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:04:36,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:36,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:04:36,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:04:36,449 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32293549] [2025-04-13 18:04:36,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32293549] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:04:36,449 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582697638] [2025-04-13 18:04:36,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:04:36,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:04:36,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:04:36,451 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 18:04:36,453 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 18:04:36,499 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-13 18:04:36,519 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:04:36,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:04:36,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:36,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 18:04:36,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:04:36,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:04:36,644 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:04:36,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:04:36,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582697638] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:04:36,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:04:36,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 7] total 14 [2025-04-13 18:04:36,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425214708] [2025-04-13 18:04:36,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:04:36,810 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 18:04:36,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:04:36,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 18:04:36,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2025-04-13 18:04:36,811 INFO L87 Difference]: Start difference. First operand 918 states and 3177 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:04:37,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:04:37,776 INFO L93 Difference]: Finished difference Result 3458 states and 12136 transitions. [2025-04-13 18:04:37,776 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-04-13 18:04:37,776 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-04-13 18:04:37,777 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:04:37,791 INFO L225 Difference]: With dead ends: 3458 [2025-04-13 18:04:37,792 INFO L226 Difference]: Without dead ends: 2614 [2025-04-13 18:04:37,793 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=383, Invalid=1099, Unknown=0, NotChecked=0, Total=1482 [2025-04-13 18:04:37,794 INFO L437 NwaCegarLoop]: 15 mSDtfsCounter, 502 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:04:37,794 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 101 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:04:37,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2025-04-13 18:04:37,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 1122. [2025-04-13 18:04:37,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 3.4513826940231938) internal successors, (3869), 1121 states have internal predecessors, (3869), 0 states have call successors, (0), 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 18:04:37,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 3869 transitions. [2025-04-13 18:04:37,889 INFO L79 Accepts]: Start accepts. Automaton has 1122 states and 3869 transitions. Word has length 26 [2025-04-13 18:04:37,890 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:04:37,890 INFO L485 AbstractCegarLoop]: Abstraction has 1122 states and 3869 transitions. [2025-04-13 18:04:37,890 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:04:37,890 INFO L278 IsEmpty]: Start isEmpty. Operand 1122 states and 3869 transitions. [2025-04-13 18:04:37,892 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 18:04:37,893 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:04:37,893 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:04:37,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-04-13 18:04:38,098 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:04:38,098 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:04:38,098 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:04:38,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1464520570, now seen corresponding path program 2 times [2025-04-13 18:04:38,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:04:38,099 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828333175] [2025-04-13 18:04:38,099 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:04:38,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:04:38,111 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-04-13 18:04:38,127 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 18:04:38,127 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:04:38,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:38,220 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:04:38,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:04:38,220 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828333175] [2025-04-13 18:04:38,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828333175] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:04:38,220 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900132643] [2025-04-13 18:04:38,220 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:04:38,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:04:38,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:04:38,223 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 18:04:38,224 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 18:04:38,261 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-04-13 18:04:38,279 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 18:04:38,279 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:04:38,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:38,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-13 18:04:38,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:04:38,300 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:04:38,300 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:04:38,318 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:04:38,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900132643] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:04:38,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:04:38,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2025-04-13 18:04:38,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050084796] [2025-04-13 18:04:38,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:04:38,319 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 18:04:38,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:04:38,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 18:04:38,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:04:38,319 INFO L87 Difference]: Start difference. First operand 1122 states and 3869 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:04:38,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:04:38,521 INFO L93 Difference]: Finished difference Result 2792 states and 9782 transitions. [2025-04-13 18:04:38,522 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 18:04:38,522 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2025-04-13 18:04:38,522 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:04:38,535 INFO L225 Difference]: With dead ends: 2792 [2025-04-13 18:04:38,535 INFO L226 Difference]: Without dead ends: 2050 [2025-04-13 18:04:38,537 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:04:38,539 INFO L437 NwaCegarLoop]: 10 mSDtfsCounter, 66 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:04:38,539 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 26 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:04:38,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2025-04-13 18:04:38,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 1714. [2025-04-13 18:04:38,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1713 states have (on average 3.489200233508465) internal successors, (5977), 1713 states have internal predecessors, (5977), 0 states have call successors, (0), 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 18:04:38,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 5977 transitions. [2025-04-13 18:04:38,697 INFO L79 Accepts]: Start accepts. Automaton has 1714 states and 5977 transitions. Word has length 29 [2025-04-13 18:04:38,698 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:04:38,698 INFO L485 AbstractCegarLoop]: Abstraction has 1714 states and 5977 transitions. [2025-04-13 18:04:38,698 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:04:38,698 INFO L278 IsEmpty]: Start isEmpty. Operand 1714 states and 5977 transitions. [2025-04-13 18:04:38,706 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 18:04:38,706 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:04:38,707 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:04:38,720 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 18:04:38,907 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-04-13 18:04:38,907 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:04:38,908 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:04:38,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1338134292, now seen corresponding path program 1 times [2025-04-13 18:04:38,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:04:38,908 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355016706] [2025-04-13 18:04:38,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:04:38,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:04:38,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-04-13 18:04:38,929 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 18:04:38,929 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:04:38,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:39,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:04:39,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:04:39,004 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355016706] [2025-04-13 18:04:39,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355016706] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:04:39,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:04:39,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 18:04:39,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317332385] [2025-04-13 18:04:39,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:04:39,005 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 18:04:39,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:04:39,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 18:04:39,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:04:39,005 INFO L87 Difference]: Start difference. First operand 1714 states and 5977 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:04:39,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:04:39,418 INFO L93 Difference]: Finished difference Result 4924 states and 17568 transitions. [2025-04-13 18:04:39,418 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 18:04:39,419 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2025-04-13 18:04:39,419 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:04:39,449 INFO L225 Difference]: With dead ends: 4924 [2025-04-13 18:04:39,449 INFO L226 Difference]: Without dead ends: 3548 [2025-04-13 18:04:39,453 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:04:39,454 INFO L437 NwaCegarLoop]: 10 mSDtfsCounter, 48 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:04:39,454 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 24 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:04:39,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3548 states. [2025-04-13 18:04:39,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3548 to 3038. [2025-04-13 18:04:39,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3038 states, 3037 states have (on average 3.5512018439249258) internal successors, (10785), 3037 states have internal predecessors, (10785), 0 states have call successors, (0), 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 18:04:39,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3038 states to 3038 states and 10785 transitions. [2025-04-13 18:04:39,764 INFO L79 Accepts]: Start accepts. Automaton has 3038 states and 10785 transitions. Word has length 29 [2025-04-13 18:04:39,765 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:04:39,765 INFO L485 AbstractCegarLoop]: Abstraction has 3038 states and 10785 transitions. [2025-04-13 18:04:39,765 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:04:39,765 INFO L278 IsEmpty]: Start isEmpty. Operand 3038 states and 10785 transitions. [2025-04-13 18:04:39,775 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-04-13 18:04:39,775 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:04:39,775 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:04:39,775 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-13 18:04:39,775 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:04:39,776 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:04:39,776 INFO L85 PathProgramCache]: Analyzing trace with hash -340854805, now seen corresponding path program 3 times [2025-04-13 18:04:39,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:04:39,776 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552431143] [2025-04-13 18:04:39,776 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:04:39,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:04:39,781 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 32 statements into 3 equivalence classes. [2025-04-13 18:04:39,793 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 18:04:39,793 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:04:39,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:39,969 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:04:39,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:04:39,969 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552431143] [2025-04-13 18:04:39,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552431143] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:04:39,969 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108602042] [2025-04-13 18:04:39,969 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:04:39,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:04:39,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:04:39,972 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 18:04:39,973 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 18:04:40,008 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 32 statements into 3 equivalence classes. [2025-04-13 18:04:40,025 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 32 of 32 statements. [2025-04-13 18:04:40,025 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:04:40,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:40,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 18:04:40,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:04:40,101 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:04:40,101 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:04:40,167 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:04:40,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108602042] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:04:40,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:04:40,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 11 [2025-04-13 18:04:40,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436477917] [2025-04-13 18:04:40,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:04:40,168 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-13 18:04:40,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:04:40,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-13 18:04:40,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2025-04-13 18:04:40,168 INFO L87 Difference]: Start difference. First operand 3038 states and 10785 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 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 18:04:40,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:04:40,965 INFO L93 Difference]: Finished difference Result 7238 states and 26374 transitions. [2025-04-13 18:04:40,965 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 18:04:40,965 INFO L79 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 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 32 [2025-04-13 18:04:40,965 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:04:40,993 INFO L225 Difference]: With dead ends: 7238 [2025-04-13 18:04:40,993 INFO L226 Difference]: Without dead ends: 4678 [2025-04-13 18:04:40,998 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:04:40,999 INFO L437 NwaCegarLoop]: 12 mSDtfsCounter, 440 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:04:41,002 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 53 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:04:41,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4678 states. [2025-04-13 18:04:41,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4678 to 2946. [2025-04-13 18:04:41,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 2945 states have (on average 3.4835314091680813) internal successors, (10259), 2945 states have internal predecessors, (10259), 0 states have call successors, (0), 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 18:04:41,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 10259 transitions. [2025-04-13 18:04:41,517 INFO L79 Accepts]: Start accepts. Automaton has 2946 states and 10259 transitions. Word has length 32 [2025-04-13 18:04:41,518 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:04:41,518 INFO L485 AbstractCegarLoop]: Abstraction has 2946 states and 10259 transitions. [2025-04-13 18:04:41,518 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 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 18:04:41,518 INFO L278 IsEmpty]: Start isEmpty. Operand 2946 states and 10259 transitions. [2025-04-13 18:04:41,527 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-04-13 18:04:41,527 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:04:41,527 INFO L218 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:04:41,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-04-13 18:04:41,728 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:04:41,728 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:04:41,729 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:04:41,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1961596486, now seen corresponding path program 4 times [2025-04-13 18:04:41,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:04:41,729 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067673802] [2025-04-13 18:04:41,729 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:04:41,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:04:41,737 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-04-13 18:04:41,747 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-04-13 18:04:41,747 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:04:41,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:41,836 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:04:41,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:04:41,837 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067673802] [2025-04-13 18:04:41,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067673802] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:04:41,837 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573307018] [2025-04-13 18:04:41,837 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:04:41,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:04:41,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:04:41,841 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 18:04:41,850 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 18:04:41,890 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-04-13 18:04:41,911 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-04-13 18:04:41,911 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:04:41,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:41,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-04-13 18:04:41,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:04:41,983 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:04:41,983 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:04:42,016 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:04:42,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573307018] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:04:42,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:04:42,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2025-04-13 18:04:42,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201136484] [2025-04-13 18:04:42,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:04:42,017 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-13 18:04:42,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:04:42,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-13 18:04:42,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-04-13 18:04:42,018 INFO L87 Difference]: Start difference. First operand 2946 states and 10259 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 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 18:04:42,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:04:42,854 INFO L93 Difference]: Finished difference Result 9314 states and 32759 transitions. [2025-04-13 18:04:42,854 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 18:04:42,854 INFO L79 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 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 35 [2025-04-13 18:04:42,855 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:04:42,892 INFO L225 Difference]: With dead ends: 9314 [2025-04-13 18:04:42,893 INFO L226 Difference]: Without dead ends: 7532 [2025-04-13 18:04:42,899 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2025-04-13 18:04:42,899 INFO L437 NwaCegarLoop]: 29 mSDtfsCounter, 222 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:04:42,899 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 105 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:04:42,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7532 states. [2025-04-13 18:04:43,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7532 to 4672. [2025-04-13 18:04:43,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4672 states, 4671 states have (on average 3.557910511667737) internal successors, (16619), 4671 states have internal predecessors, (16619), 0 states have call successors, (0), 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 18:04:43,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4672 states to 4672 states and 16619 transitions. [2025-04-13 18:04:43,282 INFO L79 Accepts]: Start accepts. Automaton has 4672 states and 16619 transitions. Word has length 35 [2025-04-13 18:04:43,283 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:04:43,283 INFO L485 AbstractCegarLoop]: Abstraction has 4672 states and 16619 transitions. [2025-04-13 18:04:43,283 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 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 18:04:43,283 INFO L278 IsEmpty]: Start isEmpty. Operand 4672 states and 16619 transitions. [2025-04-13 18:04:43,299 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-04-13 18:04:43,299 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:04:43,299 INFO L218 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:04:43,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-04-13 18:04:43,499 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:04:43,500 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:04:43,500 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:04:43,500 INFO L85 PathProgramCache]: Analyzing trace with hash 495663412, now seen corresponding path program 2 times [2025-04-13 18:04:43,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:04:43,500 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862331699] [2025-04-13 18:04:43,500 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:04:43,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:04:43,506 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-04-13 18:04:43,515 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-04-13 18:04:43,515 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:04:43,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:04:43,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:04:43,588 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862331699] [2025-04-13 18:04:43,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862331699] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:04:43,588 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129155016] [2025-04-13 18:04:43,588 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:04:43,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:04:43,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:04:43,593 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 18:04:43,594 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 18:04:43,636 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-04-13 18:04:43,655 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-04-13 18:04:43,656 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:04:43,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:43,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 18:04:43,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:04:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:04:43,694 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:04:43,731 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:04:43,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129155016] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:04:43,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:04:43,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 5 [2025-04-13 18:04:43,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342875499] [2025-04-13 18:04:43,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:04:43,732 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 18:04:43,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:04:43,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 18:04:43,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-04-13 18:04:43,732 INFO L87 Difference]: Start difference. First operand 4672 states and 16619 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 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 18:04:44,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:04:44,724 INFO L93 Difference]: Finished difference Result 11474 states and 41209 transitions. [2025-04-13 18:04:44,724 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 18:04:44,727 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 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 35 [2025-04-13 18:04:44,727 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:04:44,762 INFO L225 Difference]: With dead ends: 11474 [2025-04-13 18:04:44,762 INFO L226 Difference]: Without dead ends: 9226 [2025-04-13 18:04:44,768 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 66 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-04-13 18:04:44,769 INFO L437 NwaCegarLoop]: 10 mSDtfsCounter, 95 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:04:44,769 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 33 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:04:44,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9226 states. [2025-04-13 18:04:45,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9226 to 6406. [2025-04-13 18:04:45,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6406 states, 6405 states have (on average 3.5837626854020295) internal successors, (22954), 6405 states have internal predecessors, (22954), 0 states have call successors, (0), 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 18:04:45,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6406 states to 6406 states and 22954 transitions. [2025-04-13 18:04:45,264 INFO L79 Accepts]: Start accepts. Automaton has 6406 states and 22954 transitions. Word has length 35 [2025-04-13 18:04:45,265 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:04:45,265 INFO L485 AbstractCegarLoop]: Abstraction has 6406 states and 22954 transitions. [2025-04-13 18:04:45,265 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 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 18:04:45,265 INFO L278 IsEmpty]: Start isEmpty. Operand 6406 states and 22954 transitions. [2025-04-13 18:04:45,277 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-04-13 18:04:45,277 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:04:45,277 INFO L218 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:04:45,283 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 18:04:45,477 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-04-13 18:04:45,478 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:04:45,478 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:04:45,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1341555221, now seen corresponding path program 5 times [2025-04-13 18:04:45,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:04:45,478 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001989299] [2025-04-13 18:04:45,478 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:04:45,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:04:45,485 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 38 statements into 4 equivalence classes. [2025-04-13 18:04:45,502 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 38 of 38 statements. [2025-04-13 18:04:45,502 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 18:04:45,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:45,685 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 18:04:45,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:04:45,686 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001989299] [2025-04-13 18:04:45,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001989299] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:04:45,686 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687037234] [2025-04-13 18:04:45,686 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:04:45,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:04:45,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:04:45,688 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 18:04:45,689 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 18:04:45,725 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 38 statements into 4 equivalence classes. [2025-04-13 18:04:45,742 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 38 of 38 statements. [2025-04-13 18:04:45,742 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 18:04:45,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:45,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-04-13 18:04:45,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:04:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:04:45,957 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:04:46,261 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 32 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:04:46,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687037234] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:04:46,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:04:46,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 26 [2025-04-13 18:04:46,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599938943] [2025-04-13 18:04:46,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:04:46,262 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-04-13 18:04:46,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:04:46,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-04-13 18:04:46,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2025-04-13 18:04:46,263 INFO L87 Difference]: Start difference. First operand 6406 states and 22954 transitions. Second operand has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 26 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 18:04:58,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:04:58,984 INFO L93 Difference]: Finished difference Result 84802 states and 312313 transitions. [2025-04-13 18:04:58,985 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2025-04-13 18:04:58,985 INFO L79 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 26 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 18:04:58,985 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:04:59,358 INFO L225 Difference]: With dead ends: 84802 [2025-04-13 18:04:59,358 INFO L226 Difference]: Without dead ends: 67578 [2025-04-13 18:04:59,431 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26955 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=10259, Invalid=46623, Unknown=0, NotChecked=0, Total=56882 [2025-04-13 18:04:59,436 INFO L437 NwaCegarLoop]: 31 mSDtfsCounter, 1986 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 2791 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1986 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 3003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 2791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:04:59,436 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1986 Valid, 354 Invalid, 3003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 2791 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-04-13 18:04:59,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67578 states. [2025-04-13 18:05:01,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67578 to 14144. [2025-04-13 18:05:01,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14144 states, 14143 states have (on average 3.5644488439510713) internal successors, (50412), 14143 states have internal predecessors, (50412), 0 states have call successors, (0), 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 18:05:01,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14144 states to 14144 states and 50412 transitions. [2025-04-13 18:05:01,611 INFO L79 Accepts]: Start accepts. Automaton has 14144 states and 50412 transitions. Word has length 38 [2025-04-13 18:05:01,611 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:05:01,611 INFO L485 AbstractCegarLoop]: Abstraction has 14144 states and 50412 transitions. [2025-04-13 18:05:01,611 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 26 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 18:05:01,611 INFO L278 IsEmpty]: Start isEmpty. Operand 14144 states and 50412 transitions. [2025-04-13 18:05:01,638 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-04-13 18:05:01,638 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:05:01,638 INFO L218 NwaCegarLoop]: trace histogram [7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:05:01,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-04-13 18:05:01,843 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:05:01,843 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:05:01,843 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:05:01,844 INFO L85 PathProgramCache]: Analyzing trace with hash 807229172, now seen corresponding path program 3 times [2025-04-13 18:05:01,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:05:01,844 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720717934] [2025-04-13 18:05:01,844 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:05:01,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:05:01,849 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 41 statements into 5 equivalence classes. [2025-04-13 18:05:01,866 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 41 of 41 statements. [2025-04-13 18:05:01,867 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-04-13 18:05:01,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:01,963 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-04-13 18:05:01,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:05:01,964 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720717934] [2025-04-13 18:05:01,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720717934] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:05:01,964 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330123345] [2025-04-13 18:05:01,964 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:05:01,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:05:01,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:05:01,966 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 18:05:01,978 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 18:05:02,023 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 41 statements into 5 equivalence classes. [2025-04-13 18:05:02,051 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 41 of 41 statements. [2025-04-13 18:05:02,051 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-04-13 18:05:02,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:02,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:05:02,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:05:02,092 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 30 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 18:05:02,092 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:05:02,141 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-04-13 18:05:02,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330123345] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:05:02,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:05:02,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 6 [2025-04-13 18:05:02,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145684665] [2025-04-13 18:05:02,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:05:02,141 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 18:05:02,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:05:02,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 18:05:02,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-04-13 18:05:02,142 INFO L87 Difference]: Start difference. First operand 14144 states and 50412 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:05,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:05:05,255 INFO L93 Difference]: Finished difference Result 29890 states and 107363 transitions. [2025-04-13 18:05:05,256 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 18:05:05,256 INFO L79 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2025-04-13 18:05:05,256 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:05:05,380 INFO L225 Difference]: With dead ends: 29890 [2025-04-13 18:05:05,380 INFO L226 Difference]: Without dead ends: 27048 [2025-04-13 18:05:05,395 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 77 SyntacticMatches, 6 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-04-13 18:05:05,396 INFO L437 NwaCegarLoop]: 10 mSDtfsCounter, 115 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 41 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 18:05:05,396 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 41 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:05:05,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27048 states. [2025-04-13 18:05:07,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27048 to 18356. [2025-04-13 18:05:07,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18356 states, 18355 states have (on average 3.577717243257968) internal successors, (65669), 18355 states have internal predecessors, (65669), 0 states have call successors, (0), 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 18:05:07,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18356 states to 18356 states and 65669 transitions. [2025-04-13 18:05:07,355 INFO L79 Accepts]: Start accepts. Automaton has 18356 states and 65669 transitions. Word has length 41 [2025-04-13 18:05:07,355 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:05:07,355 INFO L485 AbstractCegarLoop]: Abstraction has 18356 states and 65669 transitions. [2025-04-13 18:05:07,355 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:07,355 INFO L278 IsEmpty]: Start isEmpty. Operand 18356 states and 65669 transitions. [2025-04-13 18:05:07,387 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-04-13 18:05:07,387 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:05:07,387 INFO L218 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:05:07,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-04-13 18:05:07,588 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:05:07,589 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:05:07,590 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:05:07,590 INFO L85 PathProgramCache]: Analyzing trace with hash -529258453, now seen corresponding path program 6 times [2025-04-13 18:05:07,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:05:07,590 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802787776] [2025-04-13 18:05:07,590 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:05:07,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:05:07,598 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 44 statements into 5 equivalence classes. [2025-04-13 18:05:07,620 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 44 of 44 statements. [2025-04-13 18:05:07,620 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-04-13 18:05:07,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:07,803 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 31 proven. 31 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:05:07,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:05:07,803 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802787776] [2025-04-13 18:05:07,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802787776] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:05:07,803 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282547397] [2025-04-13 18:05:07,803 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:05:07,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:05:07,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:05:07,805 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 18:05:07,807 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 18:05:07,847 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 44 statements into 5 equivalence classes. [2025-04-13 18:05:07,874 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 44 of 44 statements. [2025-04-13 18:05:07,875 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-04-13 18:05:07,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:07,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-04-13 18:05:07,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:05:07,956 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 41 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:05:07,956 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:05:08,049 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 31 proven. 31 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:05:08,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282547397] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:05:08,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:05:08,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 13 [2025-04-13 18:05:08,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066289505] [2025-04-13 18:05:08,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:05:08,050 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-13 18:05:08,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:05:08,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-13 18:05:08,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-04-13 18:05:08,051 INFO L87 Difference]: Start difference. First operand 18356 states and 65669 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 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 18:05:13,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:05:13,814 INFO L93 Difference]: Finished difference Result 51006 states and 186672 transitions. [2025-04-13 18:05:13,814 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 18:05:13,815 INFO L79 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 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 18:05:13,815 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:05:13,980 INFO L225 Difference]: With dead ends: 51006 [2025-04-13 18:05:13,980 INFO L226 Difference]: Without dead ends: 43214 [2025-04-13 18:05:14,005 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 76 SyntacticMatches, 11 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=208, Invalid=494, Unknown=0, NotChecked=0, Total=702 [2025-04-13 18:05:14,006 INFO L437 NwaCegarLoop]: 18 mSDtfsCounter, 400 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:05:14,006 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 99 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:05:14,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43214 states. [2025-04-13 18:05:16,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43214 to 24376. [2025-04-13 18:05:16,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24376 states, 24375 states have (on average 3.5531897435897437) internal successors, (86609), 24375 states have internal predecessors, (86609), 0 states have call successors, (0), 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 18:05:16,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24376 states to 24376 states and 86609 transitions. [2025-04-13 18:05:16,788 INFO L79 Accepts]: Start accepts. Automaton has 24376 states and 86609 transitions. Word has length 44 [2025-04-13 18:05:16,788 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:05:16,788 INFO L485 AbstractCegarLoop]: Abstraction has 24376 states and 86609 transitions. [2025-04-13 18:05:16,789 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 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 18:05:16,789 INFO L278 IsEmpty]: Start isEmpty. Operand 24376 states and 86609 transitions. [2025-04-13 18:05:16,824 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-04-13 18:05:16,824 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:05:16,824 INFO L218 NwaCegarLoop]: trace histogram [9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:05:16,834 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 18:05:17,025 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,SelfDestructingSolverStorable14 [2025-04-13 18:05:17,025 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:05:17,025 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:05:17,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1544192506, now seen corresponding path program 7 times [2025-04-13 18:05:17,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:05:17,026 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738967863] [2025-04-13 18:05:17,026 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:05:17,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:05:17,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-04-13 18:05:17,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-04-13 18:05:17,038 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:05:17,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:17,130 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 50 proven. 31 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-04-13 18:05:17,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:05:17,131 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738967863] [2025-04-13 18:05:17,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738967863] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:05:17,131 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137197861] [2025-04-13 18:05:17,131 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:05:17,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:05:17,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:05:17,133 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 18:05:17,134 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 18:05:17,171 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-04-13 18:05:17,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-04-13 18:05:17,189 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:05:17,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:17,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:05:17,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:05:17,224 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 50 proven. 32 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:05:17,225 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:05:17,271 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 50 proven. 31 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-04-13 18:05:17,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137197861] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:05:17,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:05:17,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 7 [2025-04-13 18:05:17,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369903799] [2025-04-13 18:05:17,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:05:17,272 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-13 18:05:17,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:05:17,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-13 18:05:17,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-04-13 18:05:17,272 INFO L87 Difference]: Start difference. First operand 24376 states and 86609 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:21,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:05:21,508 INFO L93 Difference]: Finished difference Result 44954 states and 160277 transitions. [2025-04-13 18:05:21,508 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 18:05:21,508 INFO L79 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2025-04-13 18:05:21,508 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:05:21,629 INFO L225 Difference]: With dead ends: 44954 [2025-04-13 18:05:21,629 INFO L226 Difference]: Without dead ends: 29654 [2025-04-13 18:05:21,649 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 88 SyntacticMatches, 8 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-04-13 18:05:21,649 INFO L437 NwaCegarLoop]: 10 mSDtfsCounter, 171 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:05:21,650 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 54 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:05:21,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29654 states. [2025-04-13 18:05:23,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29654 to 15258. [2025-04-13 18:05:23,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15258 states, 15257 states have (on average 3.5914662122304515) internal successors, (54795), 15257 states have internal predecessors, (54795), 0 states have call successors, (0), 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 18:05:23,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15258 states to 15258 states and 54795 transitions. [2025-04-13 18:05:23,983 INFO L79 Accepts]: Start accepts. Automaton has 15258 states and 54795 transitions. Word has length 47 [2025-04-13 18:05:23,983 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:05:23,983 INFO L485 AbstractCegarLoop]: Abstraction has 15258 states and 54795 transitions. [2025-04-13 18:05:23,983 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:23,983 INFO L278 IsEmpty]: Start isEmpty. Operand 15258 states and 54795 transitions. [2025-04-13 18:05:24,000 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-04-13 18:05:24,000 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:05:24,000 INFO L218 NwaCegarLoop]: trace histogram [9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:05:24,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-04-13 18:05:24,200 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-04-13 18:05:24,201 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:05:24,201 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:05:24,201 INFO L85 PathProgramCache]: Analyzing trace with hash 2085066132, now seen corresponding path program 4 times [2025-04-13 18:05:24,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:05:24,201 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190400166] [2025-04-13 18:05:24,201 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:05:24,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:05:24,206 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 47 statements into 2 equivalence classes. [2025-04-13 18:05:24,211 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 47 of 47 statements. [2025-04-13 18:05:24,211 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:05:24,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:24,294 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 50 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:05:24,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:05:24,295 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190400166] [2025-04-13 18:05:24,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190400166] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:05:24,295 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346466972] [2025-04-13 18:05:24,295 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:05:24,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:05:24,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:05:24,297 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 18:05:24,298 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 18:05:24,335 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 47 statements into 2 equivalence classes. [2025-04-13 18:05:24,353 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 47 of 47 statements. [2025-04-13 18:05:24,353 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:05:24,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:24,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-04-13 18:05:24,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:05:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 63 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:05:24,455 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:05:24,510 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 50 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:05:24,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346466972] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:05:24,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:05:24,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 12 [2025-04-13 18:05:24,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367667883] [2025-04-13 18:05:24,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:05:24,510 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 18:05:24,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:05:24,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 18:05:24,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2025-04-13 18:05:24,511 INFO L87 Difference]: Start difference. First operand 15258 states and 54795 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:29,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:05:29,788 INFO L93 Difference]: Finished difference Result 35628 states and 128093 transitions. [2025-04-13 18:05:29,788 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-13 18:05:29,788 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2025-04-13 18:05:29,788 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:05:29,902 INFO L225 Difference]: With dead ends: 35628 [2025-04-13 18:05:29,902 INFO L226 Difference]: Without dead ends: 30964 [2025-04-13 18:05:29,915 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 82 SyntacticMatches, 9 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2025-04-13 18:05:29,916 INFO L437 NwaCegarLoop]: 45 mSDtfsCounter, 343 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:05:29,916 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 280 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:05:29,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30964 states. [2025-04-13 18:05:32,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30964 to 19004. [2025-04-13 18:05:32,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19004 states, 19003 states have (on average 3.597221491343472) internal successors, (68358), 19003 states have internal predecessors, (68358), 0 states have call successors, (0), 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 18:05:32,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19004 states to 19004 states and 68358 transitions. [2025-04-13 18:05:32,902 INFO L79 Accepts]: Start accepts. Automaton has 19004 states and 68358 transitions. Word has length 47 [2025-04-13 18:05:32,903 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:05:32,903 INFO L485 AbstractCegarLoop]: Abstraction has 19004 states and 68358 transitions. [2025-04-13 18:05:32,903 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:32,903 INFO L278 IsEmpty]: Start isEmpty. Operand 19004 states and 68358 transitions. [2025-04-13 18:05:32,929 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-04-13 18:05:32,929 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:05:32,929 INFO L218 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:05:32,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-04-13 18:05:33,129 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,SelfDestructingSolverStorable16 [2025-04-13 18:05:33,130 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:05:33,130 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:05:33,130 INFO L85 PathProgramCache]: Analyzing trace with hash 283383339, now seen corresponding path program 8 times [2025-04-13 18:05:33,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:05:33,130 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195652495] [2025-04-13 18:05:33,130 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:05:33,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:05:33,135 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 50 statements into 2 equivalence classes. [2025-04-13 18:05:33,142 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-04-13 18:05:33,143 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:05:33,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:33,320 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 51 proven. 51 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-04-13 18:05:33,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:05:33,320 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195652495] [2025-04-13 18:05:33,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195652495] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:05:33,321 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088393255] [2025-04-13 18:05:33,321 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:05:33,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:05:33,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:05:33,322 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 18:05:33,324 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 18:05:33,365 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 50 statements into 2 equivalence classes. [2025-04-13 18:05:33,386 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-04-13 18:05:33,386 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:05:33,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:33,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-04-13 18:05:33,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:05:33,452 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 38 proven. 64 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-04-13 18:05:33,452 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:05:33,544 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 51 proven. 51 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-04-13 18:05:33,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088393255] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:05:33,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:05:33,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 14 [2025-04-13 18:05:33,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666263601] [2025-04-13 18:05:33,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:05:33,545 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 18:05:33,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:05:33,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 18:05:33,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2025-04-13 18:05:33,546 INFO L87 Difference]: Start difference. First operand 19004 states and 68358 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 0 states have call successors, (0), 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 18:05:44,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:05:44,438 INFO L93 Difference]: Finished difference Result 51180 states and 193628 transitions. [2025-04-13 18:05:44,438 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-13 18:05:44,438 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 0 states have call successors, (0), 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 18:05:44,438 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:05:44,593 INFO L225 Difference]: With dead ends: 51180 [2025-04-13 18:05:44,593 INFO L226 Difference]: Without dead ends: 33862 [2025-04-13 18:05:44,620 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 89 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=257, Invalid=613, Unknown=0, NotChecked=0, Total=870 [2025-04-13 18:05:44,620 INFO L437 NwaCegarLoop]: 21 mSDtfsCounter, 405 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:05:44,620 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 126 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:05:44,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33862 states. [2025-04-13 18:05:47,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33862 to 19690. [2025-04-13 18:05:47,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19690 states, 19689 states have (on average 3.5913454213012344) internal successors, (70710), 19689 states have internal predecessors, (70710), 0 states have call successors, (0), 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 18:05:47,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19690 states to 19690 states and 70710 transitions. [2025-04-13 18:05:47,789 INFO L79 Accepts]: Start accepts. Automaton has 19690 states and 70710 transitions. Word has length 50 [2025-04-13 18:05:47,789 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:05:47,789 INFO L485 AbstractCegarLoop]: Abstraction has 19690 states and 70710 transitions. [2025-04-13 18:05:47,790 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 0 states have call successors, (0), 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 18:05:47,790 INFO L278 IsEmpty]: Start isEmpty. Operand 19690 states and 70710 transitions. [2025-04-13 18:05:47,817 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-04-13 18:05:47,817 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:05:47,817 INFO L218 NwaCegarLoop]: trace histogram [11, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:05:47,824 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 18:05:48,018 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,SelfDestructingSolverStorable17 [2025-04-13 18:05:48,018 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:05:48,018 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:05:48,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1431752710, now seen corresponding path program 9 times [2025-04-13 18:05:48,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:05:48,019 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940785946] [2025-04-13 18:05:48,019 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:05:48,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:05:48,023 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 53 statements into 7 equivalence classes. [2025-04-13 18:05:48,043 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 18:05:48,044 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-04-13 18:05:48,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:48,128 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 75 proven. 51 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-04-13 18:05:48,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:05:48,128 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940785946] [2025-04-13 18:05:48,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940785946] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:05:48,128 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373078012] [2025-04-13 18:05:48,128 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:05:48,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:05:48,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:05:48,130 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 18:05:48,132 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 18:05:48,175 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 53 statements into 7 equivalence classes. [2025-04-13 18:05:48,203 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 18:05:48,203 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-04-13 18:05:48,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:48,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 18:05:48,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:05:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 75 proven. 52 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-04-13 18:05:48,243 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:05:48,305 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 75 proven. 51 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-04-13 18:05:48,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373078012] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:05:48,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:05:48,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 8 [2025-04-13 18:05:48,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167955485] [2025-04-13 18:05:48,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:05:48,306 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-13 18:05:48,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:05:48,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-13 18:05:48,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-04-13 18:05:48,307 INFO L87 Difference]: Start difference. First operand 19690 states and 70710 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 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 18:05:55,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:05:55,548 INFO L93 Difference]: Finished difference Result 45210 states and 162240 transitions. [2025-04-13 18:05:55,548 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 18:05:55,548 INFO L79 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 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 18:05:55,548 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:05:55,737 INFO L225 Difference]: With dead ends: 45210 [2025-04-13 18:05:55,737 INFO L226 Difference]: Without dead ends: 39960 [2025-04-13 18:05:55,758 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 99 SyntacticMatches, 10 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-04-13 18:05:55,758 INFO L437 NwaCegarLoop]: 10 mSDtfsCounter, 213 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:05:55,758 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 58 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:05:55,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39960 states. [2025-04-13 18:05:59,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39960 to 23962. [2025-04-13 18:05:59,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23962 states, 23961 states have (on average 3.5931722382204416) internal successors, (86096), 23961 states have internal predecessors, (86096), 0 states have call successors, (0), 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 18:05:59,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23962 states to 23962 states and 86096 transitions. [2025-04-13 18:05:59,805 INFO L79 Accepts]: Start accepts. Automaton has 23962 states and 86096 transitions. Word has length 53 [2025-04-13 18:05:59,806 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:05:59,806 INFO L485 AbstractCegarLoop]: Abstraction has 23962 states and 86096 transitions. [2025-04-13 18:05:59,806 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 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 18:05:59,806 INFO L278 IsEmpty]: Start isEmpty. Operand 23962 states and 86096 transitions. [2025-04-13 18:05:59,840 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-04-13 18:05:59,841 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:05:59,841 INFO L218 NwaCegarLoop]: trace histogram [11, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:05:59,848 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 18:06:00,041 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:06:00,041 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:06:00,042 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:06:00,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1918938804, now seen corresponding path program 5 times [2025-04-13 18:06:00,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:06:00,042 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424618701] [2025-04-13 18:06:00,042 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:06:00,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:06:00,048 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 53 statements into 7 equivalence classes. [2025-04-13 18:06:00,059 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 18:06:00,059 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-04-13 18:06:00,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:00,163 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 75 proven. 51 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-04-13 18:06:00,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:06:00,163 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424618701] [2025-04-13 18:06:00,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424618701] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:06:00,163 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090457381] [2025-04-13 18:06:00,164 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:06:00,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:06:00,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:06:00,167 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 18:06:00,172 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 18:06:00,220 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 53 statements into 7 equivalence classes. [2025-04-13 18:06:00,244 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 18:06:00,245 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-04-13 18:06:00,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:00,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 18:06:00,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:06:00,287 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 75 proven. 52 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-04-13 18:06:00,287 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:06:00,340 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 75 proven. 51 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-04-13 18:06:00,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090457381] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:06:00,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:06:00,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 8 [2025-04-13 18:06:00,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849094258] [2025-04-13 18:06:00,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:06:00,341 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-13 18:06:00,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:06:00,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-13 18:06:00,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-04-13 18:06:00,341 INFO L87 Difference]: Start difference. First operand 23962 states and 86096 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 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 18:06:09,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:06:09,311 INFO L93 Difference]: Finished difference Result 54560 states and 196207 transitions. [2025-04-13 18:06:09,312 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 18:06:09,312 INFO L79 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 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 53 [2025-04-13 18:06:09,312 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:06:09,541 INFO L225 Difference]: With dead ends: 54560 [2025-04-13 18:06:09,541 INFO L226 Difference]: Without dead ends: 48400 [2025-04-13 18:06:09,568 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 99 SyntacticMatches, 10 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-04-13 18:06:09,569 INFO L437 NwaCegarLoop]: 10 mSDtfsCounter, 135 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 67 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 18:06:09,569 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 67 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:06:09,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48400 states. [2025-04-13 18:06:14,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48400 to 29002. [2025-04-13 18:06:14,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29002 states, 29001 states have (on average 3.5957725595669117) internal successors, (104281), 29001 states have internal predecessors, (104281), 0 states have call successors, (0), 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 18:06:14,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29002 states to 29002 states and 104281 transitions. [2025-04-13 18:06:14,690 INFO L79 Accepts]: Start accepts. Automaton has 29002 states and 104281 transitions. Word has length 53 [2025-04-13 18:06:14,691 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:06:14,691 INFO L485 AbstractCegarLoop]: Abstraction has 29002 states and 104281 transitions. [2025-04-13 18:06:14,691 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 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 18:06:14,691 INFO L278 IsEmpty]: Start isEmpty. Operand 29002 states and 104281 transitions. [2025-04-13 18:06:14,730 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-04-13 18:06:14,730 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:06:14,730 INFO L218 NwaCegarLoop]: trace histogram [12, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:06:14,738 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 18:06:14,930 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,SelfDestructingSolverStorable19 [2025-04-13 18:06:14,930 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:06:14,931 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:06:14,931 INFO L85 PathProgramCache]: Analyzing trace with hash 809105515, now seen corresponding path program 10 times [2025-04-13 18:06:14,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:06:14,931 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009143394] [2025-04-13 18:06:14,931 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:06:14,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:06:14,938 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 56 statements into 2 equivalence classes. [2025-04-13 18:06:14,946 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 56 of 56 statements. [2025-04-13 18:06:14,946 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:06:14,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:15,325 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 76 proven. 76 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:06:15,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:06:15,326 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009143394] [2025-04-13 18:06:15,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009143394] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:06:15,326 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640862729] [2025-04-13 18:06:15,326 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:06:15,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:06:15,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:06:15,328 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 18:06:15,341 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 18:06:15,396 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 56 statements into 2 equivalence classes. [2025-04-13 18:06:15,422 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 56 of 56 statements. [2025-04-13 18:06:15,423 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:06:15,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:15,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-04-13 18:06:15,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:06:15,743 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-04-13 18:06:15,743 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:06:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:06:15,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640862729] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:06:15,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:06:15,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 32 [2025-04-13 18:06:15,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805914349] [2025-04-13 18:06:15,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:06:15,977 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-04-13 18:06:15,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:06:15,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-04-13 18:06:15,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=796, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 18:06:15,978 INFO L87 Difference]: Start difference. First operand 29002 states and 104281 transitions. Second operand has 33 states, 33 states have (on average 3.878787878787879) internal successors, (128), 32 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 18:08:58,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:08:58,095 INFO L93 Difference]: Finished difference Result 625714 states and 2376168 transitions. [2025-04-13 18:08:58,095 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 573 states. [2025-04-13 18:08:58,096 INFO L79 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.878787878787879) internal successors, (128), 32 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 56 [2025-04-13 18:08:58,096 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:09:02,070 INFO L225 Difference]: With dead ends: 625714 [2025-04-13 18:09:02,070 INFO L226 Difference]: Without dead ends: 510182 [2025-04-13 18:09:02,439 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 584 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180314 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=54163, Invalid=288647, Unknown=0, NotChecked=0, Total=342810 [2025-04-13 18:09:02,440 INFO L437 NwaCegarLoop]: 55 mSDtfsCounter, 4286 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 5290 mSolverCounterSat, 582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4286 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 5872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 582 IncrementalHoareTripleChecker+Valid, 5290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:09:02,440 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [4286 Valid, 809 Invalid, 5872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [582 Valid, 5290 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-04-13 18:09:03,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510182 states. [2025-04-13 18:09:21,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510182 to 81458. [2025-04-13 18:09:21,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81458 states, 81457 states have (on average 3.578366500116626) internal successors, (291483), 81457 states have internal predecessors, (291483), 0 states have call successors, (0), 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 18:09:22,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81458 states to 81458 states and 291483 transitions. [2025-04-13 18:09:22,671 INFO L79 Accepts]: Start accepts. Automaton has 81458 states and 291483 transitions. Word has length 56 [2025-04-13 18:09:22,671 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:09:22,671 INFO L485 AbstractCegarLoop]: Abstraction has 81458 states and 291483 transitions. [2025-04-13 18:09:22,672 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.878787878787879) internal successors, (128), 32 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 18:09:22,672 INFO L278 IsEmpty]: Start isEmpty. Operand 81458 states and 291483 transitions. [2025-04-13 18:09:22,776 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-04-13 18:09:22,776 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:09:22,776 INFO L218 NwaCegarLoop]: trace histogram [13, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:09:22,781 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 18:09:22,976 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:09:22,976 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:09:22,977 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:09:22,977 INFO L85 PathProgramCache]: Analyzing trace with hash 530561204, now seen corresponding path program 6 times [2025-04-13 18:09:22,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:09:22,977 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990105537] [2025-04-13 18:09:22,977 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:09:22,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:09:22,986 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 59 statements into 8 equivalence classes. [2025-04-13 18:09:23,004 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 59 of 59 statements. [2025-04-13 18:09:23,004 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-04-13 18:09:23,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:23,097 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 105 proven. 76 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-04-13 18:09:23,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:09:23,097 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990105537] [2025-04-13 18:09:23,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990105537] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:09:23,097 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505908811] [2025-04-13 18:09:23,097 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:09:23,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:09:23,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:09:23,099 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 18:09:23,100 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 18:09:23,146 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 59 statements into 8 equivalence classes. [2025-04-13 18:09:23,175 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 59 of 59 statements. [2025-04-13 18:09:23,175 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-04-13 18:09:23,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:23,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 18:09:23,179 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:09:23,211 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 105 proven. 77 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:09:23,211 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:09:23,268 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 105 proven. 76 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-04-13 18:09:23,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505908811] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:09:23,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:09:23,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 9 [2025-04-13 18:09:23,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636267999] [2025-04-13 18:09:23,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:09:23,268 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-13 18:09:23,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:09:23,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-13 18:09:23,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2025-04-13 18:09:23,269 INFO L87 Difference]: Start difference. First operand 81458 states and 291483 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 9 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 18:09:48,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:09:48,759 INFO L93 Difference]: Finished difference Result 167842 states and 602525 transitions. [2025-04-13 18:09:48,760 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 18:09:48,760 INFO L79 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 9 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 59 [2025-04-13 18:09:48,760 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:09:49,816 INFO L225 Difference]: With dead ends: 167842 [2025-04-13 18:09:49,816 INFO L226 Difference]: Without dead ends: 159846 [2025-04-13 18:09:49,870 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 110 SyntacticMatches, 12 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2025-04-13 18:09:49,880 INFO L437 NwaCegarLoop]: 10 mSDtfsCounter, 248 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:09:49,880 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 70 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:09:50,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159846 states. [2025-04-13 18:10:05,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159846 to 95852. [2025-04-13 18:10:05,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95852 states, 95851 states have (on average 3.5805781890642767) internal successors, (343202), 95851 states have internal predecessors, (343202), 0 states have call successors, (0), 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 18:10:06,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95852 states to 95852 states and 343202 transitions. [2025-04-13 18:10:06,460 INFO L79 Accepts]: Start accepts. Automaton has 95852 states and 343202 transitions. Word has length 59 [2025-04-13 18:10:06,461 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:10:06,461 INFO L485 AbstractCegarLoop]: Abstraction has 95852 states and 343202 transitions. [2025-04-13 18:10:06,461 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 9 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 18:10:06,461 INFO L278 IsEmpty]: Start isEmpty. Operand 95852 states and 343202 transitions. [2025-04-13 18:10:06,591 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-04-13 18:10:06,591 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:10:06,591 INFO L218 NwaCegarLoop]: trace histogram [14, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:10:06,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-04-13 18:10:06,791 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:10:06,792 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:10:06,792 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:10:06,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1653256597, now seen corresponding path program 11 times [2025-04-13 18:10:06,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:10:06,792 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809919337] [2025-04-13 18:10:06,792 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:10:06,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:10:06,798 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 62 statements into 8 equivalence classes. [2025-04-13 18:10:06,807 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 62 of 62 statements. [2025-04-13 18:10:06,808 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-04-13 18:10:06,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:10:06,987 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 106 proven. 106 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-04-13 18:10:06,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:10:06,987 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809919337] [2025-04-13 18:10:06,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809919337] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:10:06,987 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064833394] [2025-04-13 18:10:06,987 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:10:06,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:10:06,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:10:06,989 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 18:10:06,990 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 18:10:07,035 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 62 statements into 8 equivalence classes. [2025-04-13 18:10:07,064 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 62 of 62 statements. [2025-04-13 18:10:07,064 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-04-13 18:10:07,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:10:07,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-13 18:10:07,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:10:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 86 proven. 128 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:10:07,336 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:10:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 100 proven. 114 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:10:07,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064833394] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:10:07,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:10:07,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 15] total 35 [2025-04-13 18:10:07,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095147729] [2025-04-13 18:10:07,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:10:07,572 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-04-13 18:10:07,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:10:07,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-04-13 18:10:07,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=938, Unknown=0, NotChecked=0, Total=1260 [2025-04-13 18:10:07,572 INFO L87 Difference]: Start difference. First operand 95852 states and 343202 transitions. Second operand has 36 states, 36 states have (on average 4.0) internal successors, (144), 35 states have internal predecessors, (144), 0 states have call successors, (0), 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 18:12:39,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:12:39,837 INFO L93 Difference]: Finished difference Result 439798 states and 1647589 transitions. [2025-04-13 18:12:39,837 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2025-04-13 18:12:39,837 INFO L79 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.0) internal successors, (144), 35 states have internal predecessors, (144), 0 states have call successors, (0), 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 62 [2025-04-13 18:12:39,837 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:12:42,772 INFO L225 Difference]: With dead ends: 439798 [2025-04-13 18:12:42,772 INFO L226 Difference]: Without dead ends: 407456 [2025-04-13 18:12:42,933 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12115 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=6453, Invalid=23649, Unknown=0, NotChecked=0, Total=30102 [2025-04-13 18:12:42,933 INFO L437 NwaCegarLoop]: 40 mSDtfsCounter, 1207 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 4476 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 4621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 4476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:12:42,933 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 548 Invalid, 4621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 4476 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-04-13 18:12:43,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407456 states. [2025-04-13 18:13:06,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407456 to 125854. [2025-04-13 18:13:06,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125854 states, 125853 states have (on average 3.558977537285563) internal successors, (447908), 125853 states have internal predecessors, (447908), 0 states have call successors, (0), 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 18:13:07,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125854 states to 125854 states and 447908 transitions. [2025-04-13 18:13:07,961 INFO L79 Accepts]: Start accepts. Automaton has 125854 states and 447908 transitions. Word has length 62 [2025-04-13 18:13:07,961 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:13:07,961 INFO L485 AbstractCegarLoop]: Abstraction has 125854 states and 447908 transitions. [2025-04-13 18:13:07,961 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.0) internal successors, (144), 35 states have internal predecessors, (144), 0 states have call successors, (0), 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 18:13:07,961 INFO L278 IsEmpty]: Start isEmpty. Operand 125854 states and 447908 transitions. [2025-04-13 18:13:08,133 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-04-13 18:13:08,133 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:13:08,134 INFO L218 NwaCegarLoop]: trace histogram [15, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:13:08,140 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 18:13:08,338 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-04-13 18:13:08,339 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:13:08,340 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:13:08,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1287106502, now seen corresponding path program 12 times [2025-04-13 18:13:08,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:13:08,343 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513139839] [2025-04-13 18:13:08,343 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:13:08,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:13:08,354 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 65 statements into 9 equivalence classes. [2025-04-13 18:13:08,391 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 65 of 65 statements. [2025-04-13 18:13:08,391 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-04-13 18:13:08,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:13:08,795 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 140 proven. 106 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-04-13 18:13:08,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:13:08,795 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513139839] [2025-04-13 18:13:08,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513139839] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:13:08,795 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222229661] [2025-04-13 18:13:08,795 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:13:08,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:13:08,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:13:08,801 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 18:13:08,802 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 18:13:08,882 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 65 statements into 9 equivalence classes. [2025-04-13 18:13:08,933 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 65 of 65 statements. [2025-04-13 18:13:08,933 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-04-13 18:13:08,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:13:08,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-04-13 18:13:08,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:13:08,991 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 140 proven. 107 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-04-13 18:13:08,991 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:13:09,099 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 140 proven. 106 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-04-13 18:13:09,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222229661] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:13:09,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:13:09,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 10 [2025-04-13 18:13:09,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086342250] [2025-04-13 18:13:09,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:13:09,100 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-13 18:13:09,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:13:09,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-13 18:13:09,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2025-04-13 18:13:09,100 INFO L87 Difference]: Start difference. First operand 125854 states and 447908 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 10 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 18:13:53,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:13:53,999 INFO L93 Difference]: Finished difference Result 221378 states and 787628 transitions. [2025-04-13 18:13:53,999 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 18:13:53,999 INFO L79 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 10 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 65 [2025-04-13 18:13:53,999 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:13:54,926 INFO L225 Difference]: With dead ends: 221378 [2025-04-13 18:13:54,926 INFO L226 Difference]: Without dead ends: 140612 [2025-04-13 18:13:55,026 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 121 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 18:13:55,027 INFO L437 NwaCegarLoop]: 10 mSDtfsCounter, 276 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:13:55,027 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 79 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:13:55,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140612 states. [2025-04-13 18:14:15,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140612 to 50112. [2025-04-13 18:14:15,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50112 states, 50111 states have (on average 3.5889126139969267) internal successors, (179844), 50111 states have internal predecessors, (179844), 0 states have call successors, (0), 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 18:14:15,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50112 states to 50112 states and 179844 transitions. [2025-04-13 18:14:15,914 INFO L79 Accepts]: Start accepts. Automaton has 50112 states and 179844 transitions. Word has length 65 [2025-04-13 18:14:15,914 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:14:15,914 INFO L485 AbstractCegarLoop]: Abstraction has 50112 states and 179844 transitions. [2025-04-13 18:14:15,915 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 10 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 18:14:15,915 INFO L278 IsEmpty]: Start isEmpty. Operand 50112 states and 179844 transitions. [2025-04-13 18:14:15,974 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-04-13 18:14:15,974 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:14:15,974 INFO L218 NwaCegarLoop]: trace histogram [15, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:14:15,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-04-13 18:14:16,175 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:14:16,175 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:14:16,175 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:14:16,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1355399212, now seen corresponding path program 7 times [2025-04-13 18:14:16,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:14:16,176 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872601017] [2025-04-13 18:14:16,176 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:14:16,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:14:16,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-04-13 18:14:16,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-04-13 18:14:16,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:14:16,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:14:16,299 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 140 proven. 87 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-04-13 18:14:16,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:14:16,299 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872601017] [2025-04-13 18:14:16,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872601017] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:14:16,299 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594078856] [2025-04-13 18:14:16,299 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:14:16,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:14:16,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:14:16,302 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 18:14:16,303 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 18:14:16,348 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-04-13 18:14:16,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-04-13 18:14:16,371 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:14:16,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:14:16,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-04-13 18:14:16,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:14:16,419 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 140 proven. 87 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-04-13 18:14:16,419 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:14:16,493 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 140 proven. 87 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-04-13 18:14:16,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594078856] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:14:16,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:14:16,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 10 [2025-04-13 18:14:16,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815089796] [2025-04-13 18:14:16,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:14:16,494 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-13 18:14:16,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:14:16,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-13 18:14:16,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2025-04-13 18:14:16,494 INFO L87 Difference]: Start difference. First operand 50112 states and 179844 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:15:12,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:15:12,181 INFO L93 Difference]: Finished difference Result 111264 states and 399179 transitions. [2025-04-13 18:15:12,181 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 18:15:12,181 INFO L79 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2025-04-13 18:15:12,182 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:15:12,885 INFO L225 Difference]: With dead ends: 111264 [2025-04-13 18:15:12,885 INFO L226 Difference]: Without dead ends: 101416 [2025-04-13 18:15:12,926 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 121 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 18:15:12,927 INFO L437 NwaCegarLoop]: 10 mSDtfsCounter, 357 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:15:12,927 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 75 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:15:13,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101416 states. [2025-04-13 18:15:40,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101416 to 58316. [2025-04-13 18:15:40,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58316 states, 58315 states have (on average 3.588939380948298) internal successors, (209289), 58315 states have internal predecessors, (209289), 0 states have call successors, (0), 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 18:15:40,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58316 states to 58316 states and 209289 transitions. [2025-04-13 18:15:41,194 INFO L79 Accepts]: Start accepts. Automaton has 58316 states and 209289 transitions. Word has length 65 [2025-04-13 18:15:41,195 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:15:41,195 INFO L485 AbstractCegarLoop]: Abstraction has 58316 states and 209289 transitions. [2025-04-13 18:15:41,195 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:15:41,195 INFO L278 IsEmpty]: Start isEmpty. Operand 58316 states and 209289 transitions. [2025-04-13 18:15:41,272 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-04-13 18:15:41,272 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:15:41,272 INFO L218 NwaCegarLoop]: trace histogram [16, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:15:41,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-04-13 18:15:41,473 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:15:41,473 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:15:41,473 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:15:41,473 INFO L85 PathProgramCache]: Analyzing trace with hash 2110810283, now seen corresponding path program 13 times [2025-04-13 18:15:41,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:15:41,473 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236550091] [2025-04-13 18:15:41,474 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:15:41,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:15:41,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-04-13 18:15:41,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-04-13 18:15:41,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:15:41,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:15:41,741 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 141 proven. 141 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-04-13 18:15:41,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:15:41,741 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236550091] [2025-04-13 18:15:41,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236550091] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:15:41,741 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612175340] [2025-04-13 18:15:41,742 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:15:41,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:15:41,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:15:41,743 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 18:15:41,745 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 18:15:41,790 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-04-13 18:15:41,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-04-13 18:15:41,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:15:41,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:15:41,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-04-13 18:15:41,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:15:41,893 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 119 proven. 163 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-04-13 18:15:41,893 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:15:42,031 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 141 proven. 141 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-04-13 18:15:42,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612175340] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:15:42,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:15:42,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 14] total 21 [2025-04-13 18:15:42,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218613971] [2025-04-13 18:15:42,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:15:42,032 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 18:15:42,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:15:42,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 18:15:42,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:15:42,032 INFO L87 Difference]: Start difference. First operand 58316 states and 209289 transitions. Second operand has 22 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 21 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) Received shutdown request... [2025-04-13 18:17:28,638 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2025-04-13 18:17:28,639 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 118 SyntacticMatches, 17 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1478, Invalid=4374, Unknown=0, NotChecked=0, Total=5852 [2025-04-13 18:17:28,640 INFO L437 NwaCegarLoop]: 52 mSDtfsCounter, 712 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 3332 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 3403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 3332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:17:28,641 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 405 Invalid, 3403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 3332 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-04-13 18:17:28,642 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 18:17:28,643 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 18:17:28,648 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-04-13 18:17:28,657 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 18:17:28,849 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:17:28,849 WARN L610 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (58316states) and FLOYD_HOARE automaton (currently 68 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (115720 states constructed, input type IntersectNwa). [2025-04-13 18:17:28,852 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-04-13 18:17:28,852 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-13 18:17:28,852 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-04-13 18:17:28,861 INFO L422 BasicCegarLoop]: Path program histogram: [13, 7, 4, 1, 1] [2025-04-13 18:17:28,872 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 18:17:28,873 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 18:17:28,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 06:17:28 BasicIcfg [2025-04-13 18:17:28,879 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 18:17:28,879 INFO L158 Benchmark]: Toolchain (without parser) took 776077.19ms. Allocated memory was 155.2MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 109.6MB in the beginning and 996.0MB in the end (delta: -886.3MB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2025-04-13 18:17:28,880 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 84.7MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 18:17:28,880 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.93ms. Allocated memory is still 155.2MB. Free memory was 109.6MB in the beginning and 95.1MB in the end (delta: 14.5MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 18:17:28,880 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.24ms. Allocated memory is still 155.2MB. Free memory was 95.1MB in the beginning and 92.9MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 18:17:28,880 INFO L158 Benchmark]: Boogie Preprocessor took 46.73ms. Allocated memory is still 155.2MB. Free memory was 92.9MB in the beginning and 91.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 18:17:28,881 INFO L158 Benchmark]: RCFGBuilder took 422.83ms. Allocated memory is still 155.2MB. Free memory was 91.5MB in the beginning and 55.2MB in the end (delta: 36.4MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2025-04-13 18:17:28,881 INFO L158 Benchmark]: TraceAbstraction took 775274.23ms. Allocated memory was 155.2MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 54.5MB in the beginning and 996.0MB in the end (delta: -941.5MB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2025-04-13 18:17:28,886 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 84.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 284.93ms. Allocated memory is still 155.2MB. Free memory was 109.6MB in the beginning and 95.1MB in the end (delta: 14.5MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.24ms. Allocated memory is still 155.2MB. Free memory was 95.1MB in the beginning and 92.9MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.73ms. Allocated memory is still 155.2MB. Free memory was 92.9MB in the beginning and 91.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 422.83ms. Allocated memory is still 155.2MB. Free memory was 91.5MB in the beginning and 55.2MB in the end (delta: 36.4MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * TraceAbstraction took 775274.23ms. Allocated memory was 155.2MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 54.5MB in the beginning and 996.0MB in the end (delta: -941.5MB). Peak memory consumption was 2.0GB. 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: 120]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while NwaCegarLoop was constructing difference of abstraction (58316states) and FLOYD_HOARE automaton (currently 68 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (115720 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (58316states) and FLOYD_HOARE automaton (currently 68 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (115720 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (58316states) and FLOYD_HOARE automaton (currently 68 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (115720 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (58316states) and FLOYD_HOARE automaton (currently 68 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (115720 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 52 locations, 59 edges, 4 error locations. Started 1 CEGAR loops. OverallTime: 775.2s, OverallIterations: 26, TraceHistogramMax: 16, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.9s, AutomataDifference: 622.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12493 SdHoareTripleChecker+Valid, 10.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12493 mSDsluCounter, 3504 SdHoareTripleChecker+Invalid, 9.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3038 mSDsCounter, 1155 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21241 IncrementalHoareTripleChecker+Invalid, 22396 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1155 mSolverCounterUnsat, 466 mSDtfsCounter, 21241 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3058 GetRequests, 1628 SyntacticMatches, 146 SemanticMatches, 1284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223016 ImplicationChecksByTransitivity, 19.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125854occurred in iteration=23, InterpolantAutomatonStates: 1175, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 135.4s AutomataMinimizationTime, 25 MinimizatonAttempts, 1074992 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 1965 NumberOfCodeBlocks, 1965 NumberOfCodeBlocksAsserted, 152 NumberOfCheckSat, 2806 ConstructedInterpolants, 0 QuantifiedInterpolants, 9102 SizeOfPredicates, 80 NumberOfNonLiveVariables, 4212 ConjunctsInSsa, 323 ConjunctsInUnsatCore, 64 InterpolantComputations, 7 PerfectInterpolantSequences, 3466/6434 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