/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.trace.refinement.strategy FOX -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.firewire_tree.2.prop1-back-serstep.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-17387ad-m [2024-11-06 15:30:12,326 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 15:30:12,397 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-06 15:30:12,403 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 15:30:12,404 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 15:30:12,429 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 15:30:12,430 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 15:30:12,430 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 15:30:12,430 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 15:30:12,431 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 15:30:12,432 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 15:30:12,432 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 15:30:12,432 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 15:30:12,433 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 15:30:12,433 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 15:30:12,433 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 15:30:12,434 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 15:30:12,434 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 15:30:12,434 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 15:30:12,434 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 15:30:12,435 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 15:30:12,438 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-06 15:30:12,438 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-06 15:30:12,438 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 15:30:12,439 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-06 15:30:12,439 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 15:30:12,439 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 15:30:12,439 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 15:30:12,440 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 15:30:12,440 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 15:30:12,440 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 15:30:12,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 15:30:12,441 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 15:30:12,441 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 15:30:12,441 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 15:30:12,444 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-06 15:30:12,444 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-06 15:30:12,444 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 15:30:12,444 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 15:30:12,444 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 15:30:12,444 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 15:30:12,445 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FOX [2024-11-06 15:30:12,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 15:30:12,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 15:30:12,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 15:30:12,690 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 15:30:12,690 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 15:30:12,691 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.firewire_tree.2.prop1-back-serstep.c [2024-11-06 15:30:14,087 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 15:30:14,632 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 15:30:14,632 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.firewire_tree.2.prop1-back-serstep.c [2024-11-06 15:30:14,709 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30cda9b71/9523853a0ce040969365b1da01995a74/FLAG49feb618a [2024-11-06 15:30:15,151 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30cda9b71/9523853a0ce040969365b1da01995a74 [2024-11-06 15:30:15,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 15:30:15,172 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-06 15:30:15,174 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 15:30:15,175 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 15:30:15,178 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 15:30:15,179 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:30:15" (1/1) ... [2024-11-06 15:30:15,180 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d25abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:30:15, skipping insertion in model container [2024-11-06 15:30:15,180 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:30:15" (1/1) ... [2024-11-06 15:30:15,363 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 15:30:15,720 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.firewire_tree.2.prop1-back-serstep.c[1181,1194] [2024-11-06 15:30:16,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 15:30:16,818 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 15:30:16,827 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.firewire_tree.2.prop1-back-serstep.c[1181,1194] [2024-11-06 15:30:17,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 15:30:17,487 INFO L204 MainTranslator]: Completed translation [2024-11-06 15:30:17,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:30:17 WrapperNode [2024-11-06 15:30:17,490 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 15:30:17,491 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 15:30:17,491 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 15:30:17,491 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 15:30:17,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:30:17" (1/1) ... [2024-11-06 15:30:17,642 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:30:17" (1/1) ... [2024-11-06 15:30:18,220 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 16847 [2024-11-06 15:30:18,220 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 15:30:18,221 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 15:30:18,221 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 15:30:18,221 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 15:30:18,232 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:30:17" (1/1) ... [2024-11-06 15:30:18,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:30:17" (1/1) ... [2024-11-06 15:30:18,443 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:30:17" (1/1) ... [2024-11-06 15:30:18,601 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]. [2024-11-06 15:30:18,601 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:30:17" (1/1) ... [2024-11-06 15:30:18,602 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:30:17" (1/1) ... [2024-11-06 15:30:18,838 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:30:17" (1/1) ... [2024-11-06 15:30:18,868 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:30:17" (1/1) ... [2024-11-06 15:30:18,917 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:30:17" (1/1) ... [2024-11-06 15:30:18,952 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:30:17" (1/1) ... [2024-11-06 15:30:19,033 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 15:30:19,034 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 15:30:19,034 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 15:30:19,034 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 15:30:19,035 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:30:17" (1/1) ... [2024-11-06 15:30:19,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 15:30:19,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 15:30:19,065 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) [2024-11-06 15:30:19,068 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 [2024-11-06 15:30:19,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 15:30:19,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-06 15:30:19,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 15:30:19,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 15:30:20,720 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 15:30:20,722 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 15:31:43,806 INFO L? ?]: Removed 1286 outVars from TransFormulas that were not future-live. [2024-11-06 15:31:43,806 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 15:31:43,818 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 15:31:43,819 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 15:31:43,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:31:43 BoogieIcfgContainer [2024-11-06 15:31:43,820 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 15:31:43,822 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 15:31:43,822 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 15:31:43,825 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 15:31:43,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:30:15" (1/3) ... [2024-11-06 15:31:43,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7931a7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:31:43, skipping insertion in model container [2024-11-06 15:31:43,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:30:17" (2/3) ... [2024-11-06 15:31:43,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7931a7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:31:43, skipping insertion in model container [2024-11-06 15:31:43,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:31:43" (3/3) ... [2024-11-06 15:31:43,827 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.firewire_tree.2.prop1-back-serstep.c [2024-11-06 15:31:43,840 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 15:31:43,841 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 15:31:43,883 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 15:31:43,889 INFO L333 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=PETRI_NET, 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;@6a856ad2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 15:31:43,889 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 15:31:43,892 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 15:31:43,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-06 15:31:43,898 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 15:31:43,899 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-06 15:31:43,899 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 15:31:43,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 15:31:43,903 INFO L85 PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times [2024-11-06 15:31:43,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 15:31:43,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [419613481] [2024-11-06 15:31:43,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 15:31:43,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 15:31:43,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 15:31:43,922 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) [2024-11-06 15:31:43,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 15:31:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 15:31:46,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 1463 conjuncts, 10 conjuncts are in the unsatisfiable core