/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.rushhour.2.prop1-func-interl.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-26 15:39:54,344 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-26 15:39:54,406 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-12-26 15:39:54,409 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-26 15:39:54,409 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-26 15:39:54,430 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-26 15:39:54,431 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-26 15:39:54,432 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-26 15:39:54,432 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-26 15:39:54,435 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-26 15:39:54,435 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-26 15:39:54,435 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-26 15:39:54,436 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-26 15:39:54,437 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-26 15:39:54,437 INFO L153 SettingsManager]: * Use SBE=true [2023-12-26 15:39:54,437 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-26 15:39:54,437 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-26 15:39:54,437 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-26 15:39:54,437 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-26 15:39:54,437 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-26 15:39:54,438 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-26 15:39:54,438 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-26 15:39:54,438 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-26 15:39:54,438 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-26 15:39:54,438 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-26 15:39:54,438 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-26 15:39:54,439 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-26 15:39:54,439 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-26 15:39:54,439 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-26 15:39:54,439 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-26 15:39:54,440 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-26 15:39:54,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 15:39:54,440 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-26 15:39:54,440 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-26 15:39:54,440 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-26 15:39:54,441 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-26 15:39:54,441 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-26 15:39:54,441 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-26 15:39:54,441 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-26 15:39:54,441 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-26 15:39:54,441 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-26 15:39:54,441 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-26 15:39:54,441 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-26 15:39:54,441 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-26 15:39:54,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-26 15:39:54,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-26 15:39:54,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-26 15:39:54,644 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-26 15:39:54,644 INFO L274 PluginConnector]: CDTParser initialized [2023-12-26 15:39:54,645 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.rushhour.2.prop1-func-interl.c [2023-12-26 15:39:55,652 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-26 15:39:56,090 INFO L384 CDTParser]: Found 1 translation units. [2023-12-26 15:39:56,091 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.rushhour.2.prop1-func-interl.c [2023-12-26 15:39:56,132 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9451171b0/2e034c040e914731aa179e40a8277066/FLAG1bc5cdfbc [2023-12-26 15:39:56,146 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9451171b0/2e034c040e914731aa179e40a8277066 [2023-12-26 15:39:56,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-26 15:39:56,149 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-26 15:39:56,151 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-26 15:39:56,151 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-26 15:39:56,154 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-26 15:39:56,154 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 03:39:56" (1/1) ... [2023-12-26 15:39:56,155 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52580e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:39:56, skipping insertion in model container [2023-12-26 15:39:56,155 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 03:39:56" (1/1) ... [2023-12-26 15:39:56,280 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-26 15:39:56,539 WARN L239 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.rushhour.2.prop1-func-interl.c[1175,1188] [2023-12-26 15:39:57,327 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 15:39:57,336 INFO L202 MainTranslator]: Completed pre-run [2023-12-26 15:39:57,344 WARN L239 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.rushhour.2.prop1-func-interl.c[1175,1188] [2023-12-26 15:39:57,887 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 15:39:57,898 INFO L206 MainTranslator]: Completed translation [2023-12-26 15:39:57,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:39:57 WrapperNode [2023-12-26 15:39:57,898 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-26 15:39:57,900 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-26 15:39:57,900 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-26 15:39:57,900 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-26 15:39:57,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:39:57" (1/1) ... [2023-12-26 15:39:58,047 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:39:57" (1/1) ... [2023-12-26 15:39:58,409 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 16318 [2023-12-26 15:39:58,410 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-26 15:39:58,411 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-26 15:39:58,411 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-26 15:39:58,411 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-26 15:39:58,418 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:39:57" (1/1) ... [2023-12-26 15:39:58,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:39:57" (1/1) ... [2023-12-26 15:39:58,516 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:39:57" (1/1) ... [2023-12-26 15:39:58,743 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]. [2023-12-26 15:39:58,743 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:39:57" (1/1) ... [2023-12-26 15:39:58,743 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:39:57" (1/1) ... [2023-12-26 15:39:58,854 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:39:57" (1/1) ... [2023-12-26 15:39:58,867 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:39:57" (1/1) ... [2023-12-26 15:39:58,892 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:39:57" (1/1) ... [2023-12-26 15:39:58,921 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:39:57" (1/1) ... [2023-12-26 15:39:59,044 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-26 15:39:59,045 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-26 15:39:59,045 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-26 15:39:59,045 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-26 15:39:59,046 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:39:57" (1/1) ... [2023-12-26 15:39:59,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 15:39:59,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-26 15:39:59,068 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) [2023-12-26 15:39:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-26 15:39:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-26 15:39:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-26 15:39:59,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-26 15:39:59,094 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 [2023-12-26 15:40:00,641 INFO L241 CfgBuilder]: Building ICFG [2023-12-26 15:40:00,642 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-26 15:41:37,903 INFO L282 CfgBuilder]: Performing block encoding [2023-12-26 15:41:38,518 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-26 15:41:38,518 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-26 15:41:38,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 03:41:38 BoogieIcfgContainer [2023-12-26 15:41:38,518 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-26 15:41:38,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-26 15:41:38,521 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-26 15:41:38,523 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-26 15:41:38,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.12 03:39:56" (1/3) ... [2023-12-26 15:41:38,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c95fbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 03:41:38, skipping insertion in model container [2023-12-26 15:41:38,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:39:57" (2/3) ... [2023-12-26 15:41:38,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c95fbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 03:41:38, skipping insertion in model container [2023-12-26 15:41:38,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 03:41:38" (3/3) ... [2023-12-26 15:41:38,525 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.rushhour.2.prop1-func-interl.c [2023-12-26 15:41:38,536 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-26 15:41:38,536 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-26 15:41:38,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-26 15:41:38,577 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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;@6723a928, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-26 15:41:38,578 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-26 15:41:38,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 15:41:38,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-26 15:41:38,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 15:41:38,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-26 15:41:38,586 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 15:41:38,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 15:41:38,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-12-26 15:41:38,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 15:41:38,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530092949] [2023-12-26 15:41:38,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 15:41:38,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 15:41:38,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 15:41:38,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-26 15:41:38,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-26 15:41:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 15:41:40,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-26 15:41:40,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 15:41:41,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 15:41:41,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-26 15:41:41,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 15:41:41,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530092949] [2023-12-26 15:41:41,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530092949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-26 15:41:41,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-26 15:41:41,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-26 15:41:41,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304793548] [2023-12-26 15:41:41,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-26 15:41:41,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-26 15:41:41,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 15:41:41,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-26 15:41:41,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-26 15:41:41,115 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 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 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 15:41:46,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.81s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-26 15:41:50,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-26 15:41:54,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-26 15:41:59,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.76s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-26 15:42:03,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-26 15:42:03,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 15:42:03,226 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-12-26 15:42:03,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-26 15:42:03,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2023-12-26 15:42:03,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 15:42:03,403 INFO L225 Difference]: With dead ends: 16 [2023-12-26 15:42:03,403 INFO L226 Difference]: Without dead ends: 9 [2023-12-26 15:42:03,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-26 15:42:03,407 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.0s IncrementalHoareTripleChecker+Time [2023-12-26 15:42:03,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 7 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 5 Unknown, 0 Unchecked, 22.0s Time] [2023-12-26 15:42:03,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-26 15:42:03,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-12-26 15:42:03,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 15:42:03,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-12-26 15:42:03,431 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-12-26 15:42:03,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 15:42:03,431 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-12-26 15:42:03,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 15:42:03,432 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-12-26 15:42:03,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-26 15:42:03,432 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 15:42:03,432 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-12-26 15:42:03,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-26 15:42:03,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 15:42:03,640 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 15:42:03,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 15:42:03,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-12-26 15:42:03,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 15:42:03,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008997024] [2023-12-26 15:42:03,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 15:42:03,664 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 15:42:03,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 15:42:03,666 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-26 15:42:03,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-26 15:43:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 15:43:35,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 15319 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-26 15:43:35,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 15:43:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 15:43:36,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 15:43:37,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 15:43:37,926 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 15:43:37,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008997024] [2023-12-26 15:43:37,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008997024] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-26 15:43:37,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 15:43:37,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-26 15:43:37,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249798997] [2023-12-26 15:43:37,926 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 15:43:37,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-26 15:43:37,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 15:43:37,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-26 15:43:37,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-26 15:43:37,928 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 15:43:43,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.72s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 15:43:47,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 15:43:51,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 15:43:55,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 15:43:59,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2023-12-26 15:44:04,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.86s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 15:44:08,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 15:44:12,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 15:44:16,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 15:44:20,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 15:44:25,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.76s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 15:44:29,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2023-12-26 15:44:34,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.71s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-26 15:44:38,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-26 15:44:42,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-26 15:44:46,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 15:44:50,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-26 15:44:55,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-26 15:44:55,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 15:44:55,024 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-12-26 15:44:55,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-26 15:44:55,232 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-26 15:44:55,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 15:44:55,232 INFO L225 Difference]: With dead ends: 14 [2023-12-26 15:44:55,232 INFO L226 Difference]: Without dead ends: 12 [2023-12-26 15:44:55,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-26 15:44:55,233 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.2s IncrementalHoareTripleChecker+Time [2023-12-26 15:44:55,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 10 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 18 Unknown, 0 Unchecked, 76.2s Time] [2023-12-26 15:44:55,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-26 15:44:55,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-12-26 15:44:55,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 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) [2023-12-26 15:44:55,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-12-26 15:44:55,236 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-12-26 15:44:55,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 15:44:55,236 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-12-26 15:44:55,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 15:44:55,237 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-12-26 15:44:55,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-26 15:44:55,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 15:44:55,237 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-12-26 15:44:55,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-26 15:44:55,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 15:44:55,438 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 15:44:55,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 15:44:55,439 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-12-26 15:44:55,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 15:44:55,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566668205] [2023-12-26 15:44:55,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-26 15:44:55,462 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 15:44:55,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 15:44:55,463 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-26 15:44:55,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-26 15:48:59,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-26 15:48:59,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 15:49:00,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 30409 conjuncts, 396 conjunts are in the unsatisfiable core [2023-12-26 15:49:00,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 15:49:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 15:49:36,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-26 15:54:26,518 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-26 15:54:26,518 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 [2023-12-26 15:54:26,550 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-26 15:54:26,751 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forcibly destroying the process [2023-12-26 15:54:26,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 137 [2023-12-26 15:54:26,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 15:54:26,758 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 11 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-15-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. [2023-12-26 15:54:26,761 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-12-26 15:54:26,763 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-26 15:54:26,767 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.12 03:54:26 BoogieIcfgContainer [2023-12-26 15:54:26,768 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-26 15:54:26,768 INFO L158 Benchmark]: Toolchain (without parser) took 870619.34ms. Allocated memory was 243.3MB in the beginning and 3.3GB in the end (delta: 3.0GB). Free memory was 172.5MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. [2023-12-26 15:54:26,768 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 202.4MB. Free memory was 150.4MB in the beginning and 150.3MB in the end (delta: 180.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-26 15:54:26,769 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1747.96ms. Allocated memory was 243.3MB in the beginning and 445.6MB in the end (delta: 202.4MB). Free memory was 172.0MB in the beginning and 279.2MB in the end (delta: -107.2MB). Peak memory consumption was 182.2MB. Max. memory is 8.0GB. [2023-12-26 15:54:26,769 INFO L158 Benchmark]: Boogie Procedure Inliner took 510.33ms. Allocated memory is still 445.6MB. Free memory was 279.2MB in the beginning and 210.6MB in the end (delta: 68.7MB). Peak memory consumption was 101.7MB. Max. memory is 8.0GB. [2023-12-26 15:54:26,769 INFO L158 Benchmark]: Boogie Preprocessor took 633.47ms. Allocated memory was 445.6MB in the beginning and 1.1GB in the end (delta: 608.2MB). Free memory was 210.6MB in the beginning and 824.0MB in the end (delta: -613.4MB). Peak memory consumption was 100.1MB. Max. memory is 8.0GB. [2023-12-26 15:54:26,769 INFO L158 Benchmark]: RCFGBuilder took 99473.22ms. Allocated memory was 1.1GB in the beginning and 2.1GB in the end (delta: 1.1GB). Free memory was 824.0MB in the beginning and 1.7GB in the end (delta: -876.5MB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-26 15:54:26,770 INFO L158 Benchmark]: TraceAbstraction took 768246.86ms. Allocated memory was 2.1GB in the beginning and 3.3GB in the end (delta: 1.2GB). Free memory was 1.7GB in the beginning and 1.6GB in the end (delta: 57.2MB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2023-12-26 15:54:26,771 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 202.4MB. Free memory was 150.4MB in the beginning and 150.3MB in the end (delta: 180.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1747.96ms. Allocated memory was 243.3MB in the beginning and 445.6MB in the end (delta: 202.4MB). Free memory was 172.0MB in the beginning and 279.2MB in the end (delta: -107.2MB). Peak memory consumption was 182.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 510.33ms. Allocated memory is still 445.6MB. Free memory was 279.2MB in the beginning and 210.6MB in the end (delta: 68.7MB). Peak memory consumption was 101.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 633.47ms. Allocated memory was 445.6MB in the beginning and 1.1GB in the end (delta: 608.2MB). Free memory was 210.6MB in the beginning and 824.0MB in the end (delta: -613.4MB). Peak memory consumption was 100.1MB. Max. memory is 8.0GB. * RCFGBuilder took 99473.22ms. Allocated memory was 1.1GB in the beginning and 2.1GB in the end (delta: 1.1GB). Free memory was 824.0MB in the beginning and 1.7GB in the end (delta: -876.5MB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. * TraceAbstraction took 768246.86ms. Allocated memory was 2.1GB in the beginning and 3.3GB in the end (delta: 1.2GB). Free memory was 1.7GB in the beginning and 1.6GB in the end (delta: 57.2MB). Peak memory consumption was 2.2GB. 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: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was analyzing trace of length 11 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-15-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 768.2s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 99.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 98.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 96.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23 IncrementalHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 6 mSDtfsCounter, 23 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=2, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.2s SsaConstructionTime, 88.2s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 4 QuantifiedInterpolants, 1228 SizeOfPredicates, 103 NumberOfNonLiveVariables, 15548 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown