/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-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 09:14:16,244 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 09:14:16,306 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 09:14:16,309 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 09:14:16,309 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 09:14:16,328 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 09:14:16,329 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 09:14:16,329 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 09:14:16,330 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 09:14:16,333 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 09:14:16,333 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 09:14:16,333 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 09:14:16,333 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 09:14:16,334 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 09:14:16,334 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 09:14:16,335 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 09:14:16,335 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 09:14:16,335 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 09:14:16,335 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 09:14:16,336 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 09:14:16,336 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 09:14:16,337 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 09:14:16,337 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 09:14:16,337 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 09:14:16,337 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 09:14:16,337 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 09:14:16,337 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 09:14:16,337 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 09:14:16,338 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 09:14:16,338 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 09:14:16,338 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 09:14:16,338 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 09:14:16,339 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 09:14:16,339 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 09:14:16,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 09:14:16,339 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 09:14:16,339 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 09:14:16,339 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 09:14:16,339 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 09:14:16,339 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 09:14:16,339 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 09:14:16,340 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 09:14:16,340 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 09:14:16,340 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 09:14:16,341 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 09:14:16,341 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 09:14:16,341 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 09:14:16,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 09:14:16,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 09:14:16,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 09:14:16,549 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 09:14:16,549 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 09:14:16,551 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label31.c [2023-12-16 09:14:17,566 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 09:14:17,907 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 09:14:17,907 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label31.c [2023-12-16 09:14:17,933 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ea7a9f93/1e9375f2a3d14265b92e402b3b103bc0/FLAG1da4754a8 [2023-12-16 09:14:17,947 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ea7a9f93/1e9375f2a3d14265b92e402b3b103bc0 [2023-12-16 09:14:17,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 09:14:17,950 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 09:14:17,952 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 09:14:17,952 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 09:14:17,955 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 09:14:17,956 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:14:17" (1/1) ... [2023-12-16 09:14:17,956 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f166aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:14:17, skipping insertion in model container [2023-12-16 09:14:17,957 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:14:17" (1/1) ... [2023-12-16 09:14:18,044 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 09:14:18,227 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label31.c[7776,7789] [2023-12-16 09:14:18,778 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 09:14:18,789 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 09:14:18,809 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label31.c[7776,7789] [2023-12-16 09:14:19,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 09:14:19,162 INFO L206 MainTranslator]: Completed translation [2023-12-16 09:14:19,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:14:19 WrapperNode [2023-12-16 09:14:19,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 09:14:19,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 09:14:19,165 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 09:14:19,165 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 09:14:19,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:14:19" (1/1) ... [2023-12-16 09:14:19,216 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:14:19" (1/1) ... [2023-12-16 09:14:19,344 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4756 [2023-12-16 09:14:19,345 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 09:14:19,345 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 09:14:19,345 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 09:14:19,346 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 09:14:19,353 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:14:19" (1/1) ... [2023-12-16 09:14:19,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:14:19" (1/1) ... [2023-12-16 09:14:19,382 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:14:19" (1/1) ... [2023-12-16 09:14:19,496 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]. [2023-12-16 09:14:19,496 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:14:19" (1/1) ... [2023-12-16 09:14:19,497 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:14:19" (1/1) ... [2023-12-16 09:14:19,539 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:14:19" (1/1) ... [2023-12-16 09:14:19,556 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:14:19" (1/1) ... [2023-12-16 09:14:19,570 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:14:19" (1/1) ... [2023-12-16 09:14:19,588 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:14:19" (1/1) ... [2023-12-16 09:14:19,610 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 09:14:19,611 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 09:14:19,611 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 09:14:19,611 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 09:14:19,611 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:14:19" (1/1) ... [2023-12-16 09:14:19,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 09:14:19,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 09:14:19,636 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) [2023-12-16 09:14:19,644 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 [2023-12-16 09:14:19,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 09:14:19,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 09:14:19,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 09:14:19,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 09:14:19,720 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 09:14:19,737 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 09:14:44,602 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 09:14:44,652 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 09:14:44,653 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 09:14:44,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:14:44 BoogieIcfgContainer [2023-12-16 09:14:44,653 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 09:14:44,655 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 09:14:44,655 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 09:14:44,657 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 09:14:44,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 09:14:17" (1/3) ... [2023-12-16 09:14:44,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d694df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:14:44, skipping insertion in model container [2023-12-16 09:14:44,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:14:19" (2/3) ... [2023-12-16 09:14:44,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d694df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:14:44, skipping insertion in model container [2023-12-16 09:14:44,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:14:44" (3/3) ... [2023-12-16 09:14:44,659 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label31.c [2023-12-16 09:14:44,670 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 09:14:44,670 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 09:14:44,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 09:14:44,731 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;@7929d1a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 09:14:44,732 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 09:14:44,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:14:44,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 09:14:44,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:14:44,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:14:44,752 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:14:44,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:14:44,757 INFO L85 PathProgramCache]: Analyzing trace with hash -2115484114, now seen corresponding path program 1 times [2023-12-16 09:14:44,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:14:44,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179787629] [2023-12-16 09:14:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:14:44,770 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 [2023-12-16 09:14:44,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:14:44,773 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) [2023-12-16 09:14:44,776 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 [2023-12-16 09:14:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:14:44,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 09:14:44,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:14:44,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:14:44,871 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:14:44,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:14:44,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179787629] [2023-12-16 09:14:44,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179787629] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:14:44,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:14:44,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 09:14:44,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453183242] [2023-12-16 09:14:44,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:14:44,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 09:14:44,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:14:44,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 09:14:44,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 09:14:44,908 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 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 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:14:44,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:14:44,976 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2023-12-16 09:14:44,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 09:14:44,979 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 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 [2023-12-16 09:14:44,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:14:44,991 INFO L225 Difference]: With dead ends: 1511 [2023-12-16 09:14:44,991 INFO L226 Difference]: Without dead ends: 754 [2023-12-16 09:14:44,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 09:14:44,998 INFO L413 NwaCegarLoop]: 1438 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 09:14:44,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 09:14:45,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-12-16 09:14:45,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2023-12-16 09:14:45,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:14:45,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2023-12-16 09:14:45,055 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 62 [2023-12-16 09:14:45,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:14:45,055 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2023-12-16 09:14:45,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:14:45,056 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2023-12-16 09:14:45,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 09:14:45,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:14:45,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:14:45,071 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 [2023-12-16 09:14:45,271 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 [2023-12-16 09:14:45,271 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:14:45,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:14:45,272 INFO L85 PathProgramCache]: Analyzing trace with hash 534896978, now seen corresponding path program 1 times [2023-12-16 09:14:45,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:14:45,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15587439] [2023-12-16 09:14:45,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:14:45,273 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 [2023-12-16 09:14:45,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:14:45,274 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) [2023-12-16 09:14:45,278 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 [2023-12-16 09:14:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:14:45,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 09:14:45,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:14:45,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:14:45,487 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:14:45,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:14:45,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15587439] [2023-12-16 09:14:45,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [15587439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:14:45,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:14:45,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 09:14:45,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457263327] [2023-12-16 09:14:45,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:14:45,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:14:45,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:14:45,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:14:45,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:14:45,493 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:15:20,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:15:20,224 INFO L93 Difference]: Finished difference Result 2258 states and 4311 transitions. [2023-12-16 09:15:20,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:15:20,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 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 [2023-12-16 09:15:20,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:15:20,231 INFO L225 Difference]: With dead ends: 2258 [2023-12-16 09:15:20,231 INFO L226 Difference]: Without dead ends: 1505 [2023-12-16 09:15:20,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:15:20,233 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 738 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2404 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 2860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 2404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.5s IncrementalHoareTripleChecker+Time [2023-12-16 09:15:20,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 473 Invalid, 2860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 2404 Invalid, 0 Unknown, 0 Unchecked, 34.5s Time] [2023-12-16 09:15:20,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2023-12-16 09:15:20,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1505. [2023-12-16 09:15:20,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1504 states have (on average 1.6070478723404256) internal successors, (2417), 1504 states have internal predecessors, (2417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:15:20,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2417 transitions. [2023-12-16 09:15:20,267 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2417 transitions. Word has length 62 [2023-12-16 09:15:20,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:15:20,267 INFO L495 AbstractCegarLoop]: Abstraction has 1505 states and 2417 transitions. [2023-12-16 09:15:20,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:15:20,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2417 transitions. [2023-12-16 09:15:20,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-16 09:15:20,270 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:15:20,270 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:15:20,276 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 (3)] Forceful destruction successful, exit code 0 [2023-12-16 09:15:20,474 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 [2023-12-16 09:15:20,475 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:15:20,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:15:20,475 INFO L85 PathProgramCache]: Analyzing trace with hash -527997217, now seen corresponding path program 1 times [2023-12-16 09:15:20,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:15:20,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941852721] [2023-12-16 09:15:20,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:15:20,477 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 [2023-12-16 09:15:20,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:15:20,478 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) [2023-12-16 09:15:20,481 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 [2023-12-16 09:15:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:15:20,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 09:15:20,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:15:20,679 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:15:20,679 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:15:20,679 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:15:20,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941852721] [2023-12-16 09:15:20,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941852721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:15:20,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:15:20,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 09:15:20,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751151402] [2023-12-16 09:15:20,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:15:20,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:15:20,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:15:20,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:15:20,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:15:20,681 INFO L87 Difference]: Start difference. First operand 1505 states and 2417 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 09:15:31,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:15:31,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:15:31,931 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 288 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2023-12-16 09:15:31,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 209 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2023-12-16 09:15:31,933 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 09:15:31,939 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 0 [2023-12-16 09:15:31,948 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 [2023-12-16 09:15:31,949 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 [2023-12-16 09:15:32,136 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 [2023-12-16 09:15:32,138 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (1505states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (1681 states constructed, input type IntersectNwa). [2023-12-16 09:15:32,141 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-16 09:15:32,143 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 09:15:32,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 09:15:32 BoogieIcfgContainer [2023-12-16 09:15:32,144 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 09:15:32,145 INFO L158 Benchmark]: Toolchain (without parser) took 74195.06ms. Allocated memory was 366.0MB in the beginning and 585.1MB in the end (delta: 219.2MB). Free memory was 306.0MB in the beginning and 249.9MB in the end (delta: 56.1MB). Peak memory consumption was 276.3MB. Max. memory is 8.0GB. [2023-12-16 09:15:32,145 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 212.9MB. Free memory was 166.3MB in the beginning and 166.1MB in the end (delta: 138.1kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 09:15:32,145 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1212.01ms. Allocated memory is still 366.0MB. Free memory was 306.0MB in the beginning and 182.4MB in the end (delta: 123.6MB). Peak memory consumption was 124.1MB. Max. memory is 8.0GB. [2023-12-16 09:15:32,145 INFO L158 Benchmark]: Boogie Procedure Inliner took 180.46ms. Allocated memory is still 366.0MB. Free memory was 182.4MB in the beginning and 147.8MB in the end (delta: 34.6MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2023-12-16 09:15:32,146 INFO L158 Benchmark]: Boogie Preprocessor took 264.57ms. Allocated memory is still 366.0MB. Free memory was 147.8MB in the beginning and 280.2MB in the end (delta: -132.4MB). Peak memory consumption was 30.6MB. Max. memory is 8.0GB. [2023-12-16 09:15:32,146 INFO L158 Benchmark]: RCFGBuilder took 25042.64ms. Allocated memory was 366.0MB in the beginning and 585.1MB in the end (delta: 219.2MB). Free memory was 280.2MB in the beginning and 420.8MB in the end (delta: -140.5MB). Peak memory consumption was 198.7MB. Max. memory is 8.0GB. [2023-12-16 09:15:32,146 INFO L158 Benchmark]: TraceAbstraction took 47489.63ms. Allocated memory is still 585.1MB. Free memory was 419.7MB in the beginning and 249.9MB in the end (delta: 169.9MB). Peak memory consumption was 170.4MB. Max. memory is 8.0GB. [2023-12-16 09:15:32,147 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 212.9MB. Free memory was 166.3MB in the beginning and 166.1MB in the end (delta: 138.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1212.01ms. Allocated memory is still 366.0MB. Free memory was 306.0MB in the beginning and 182.4MB in the end (delta: 123.6MB). Peak memory consumption was 124.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 180.46ms. Allocated memory is still 366.0MB. Free memory was 182.4MB in the beginning and 147.8MB in the end (delta: 34.6MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 264.57ms. Allocated memory is still 366.0MB. Free memory was 147.8MB in the beginning and 280.2MB in the end (delta: -132.4MB). Peak memory consumption was 30.6MB. Max. memory is 8.0GB. * RCFGBuilder took 25042.64ms. Allocated memory was 366.0MB in the beginning and 585.1MB in the end (delta: 219.2MB). Free memory was 280.2MB in the beginning and 420.8MB in the end (delta: -140.5MB). Peak memory consumption was 198.7MB. Max. memory is 8.0GB. * TraceAbstraction took 47489.63ms. Allocated memory is still 585.1MB. Free memory was 419.7MB in the beginning and 249.9MB in the end (delta: 169.9MB). Peak memory consumption was 170.4MB. 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: 211]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 211). Cancelled while NwaCegarLoop was constructing difference of abstraction (1505states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (1681 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 756 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 47.4s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 46.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1026 SdHoareTripleChecker+Valid, 45.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1026 mSDsluCounter, 2120 SdHoareTripleChecker+Invalid, 37.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 640 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3265 IncrementalHoareTripleChecker+Invalid, 3905 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 640 mSolverCounterUnsat, 2108 mSDtfsCounter, 3265 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 251 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1505occurred in iteration=2, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 254 NumberOfCodeBlocks, 254 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 251 ConstructedInterpolants, 0 QuantifiedInterpolants, 625 SizeOfPredicates, 0 NumberOfNonLiveVariables, 356 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 60/60 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