/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/array-examples/sanfoundry_27_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 15:27:24,701 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 15:27:24,790 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 15:27:24,795 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 15:27:24,796 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 15:27:24,824 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 15:27:24,825 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 15:27:24,825 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 15:27:24,826 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 15:27:24,829 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 15:27:24,830 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 15:27:24,830 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 15:27:24,831 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 15:27:24,832 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 15:27:24,832 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 15:27:24,833 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 15:27:24,833 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 15:27:24,834 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 15:27:24,834 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 15:27:24,834 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 15:27:24,834 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 15:27:24,835 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 15:27:24,835 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 15:27:24,835 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 15:27:24,835 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 15:27:24,836 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 15:27:24,836 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 15:27:24,836 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 15:27:24,836 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 15:27:24,837 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 15:27:24,838 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 15:27:24,838 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 15:27:24,838 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 15:27:24,838 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 15:27:24,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 15:27:24,839 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 15:27:24,839 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 15:27:24,839 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 15:27:24,839 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 15:27:24,840 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 15:27:24,840 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 15:27:24,840 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 15:27:24,840 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 15:27:24,840 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 15:27:24,841 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 15:27:24,841 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 15:27:24,841 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 15:27:25,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 15:27:25,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 15:27:25,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 15:27:25,117 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 15:27:25,117 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 15:27:25,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sanfoundry_27_ground.i [2023-12-21 15:27:26,249 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 15:27:26,414 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 15:27:26,414 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sanfoundry_27_ground.i [2023-12-21 15:27:26,422 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7025dbc87/3ee1c924a3264720a9ddd740e2e5a670/FLAG0b2195aa0 [2023-12-21 15:27:26,435 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7025dbc87/3ee1c924a3264720a9ddd740e2e5a670 [2023-12-21 15:27:26,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 15:27:26,438 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 15:27:26,439 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 15:27:26,439 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 15:27:26,443 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 15:27:26,444 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35502750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26, skipping insertion in model container [2023-12-21 15:27:26,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,460 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 15:27:26,587 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sanfoundry_27_ground.i[813,826] [2023-12-21 15:27:26,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 15:27:26,613 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 15:27:26,622 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sanfoundry_27_ground.i[813,826] [2023-12-21 15:27:26,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 15:27:26,640 INFO L206 MainTranslator]: Completed translation [2023-12-21 15:27:26,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26 WrapperNode [2023-12-21 15:27:26,640 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 15:27:26,641 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 15:27:26,642 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 15:27:26,642 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 15:27:26,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,661 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,677 INFO L138 Inliner]: procedures = 18, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 61 [2023-12-21 15:27:26,677 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 15:27:26,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 15:27:26,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 15:27:26,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 15:27:26,684 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,686 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,693 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-12-21 15:27:26,693 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,693 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,697 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,699 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,700 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,701 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,702 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 15:27:26,702 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 15:27:26,702 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 15:27:26,702 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 15:27:26,703 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 15:27:26,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 15:27:26,731 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) [2023-12-21 15:27:26,733 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 [2023-12-21 15:27:26,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 15:27:26,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 15:27:26,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 15:27:26,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 15:27:26,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 15:27:26,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 15:27:26,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 15:27:26,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 15:27:26,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 15:27:26,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 15:27:26,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 15:27:26,823 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 15:27:26,825 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 15:27:26,952 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 15:27:27,006 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 15:27:27,006 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-21 15:27:27,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:27:27 BoogieIcfgContainer [2023-12-21 15:27:27,007 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 15:27:27,009 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 15:27:27,009 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 15:27:27,011 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 15:27:27,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:27:26" (1/3) ... [2023-12-21 15:27:27,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2581fa78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:27:27, skipping insertion in model container [2023-12-21 15:27:27,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (2/3) ... [2023-12-21 15:27:27,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2581fa78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:27:27, skipping insertion in model container [2023-12-21 15:27:27,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:27:27" (3/3) ... [2023-12-21 15:27:27,013 INFO L112 eAbstractionObserver]: Analyzing ICFG sanfoundry_27_ground.i [2023-12-21 15:27:27,029 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 15:27:27,029 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 15:27:27,069 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 15:27:27,075 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;@621c7de7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 15:27:27,075 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 15:27:27,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:27,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-21 15:27:27,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:27,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:27,088 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:27,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:27,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1357947524, now seen corresponding path program 1 times [2023-12-21 15:27:27,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:27,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341913345] [2023-12-21 15:27:27,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:27:27,108 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 [2023-12-21 15:27:27,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:27,111 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) [2023-12-21 15:27:27,116 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 [2023-12-21 15:27:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:27:27,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 15:27:27,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:27,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 15:27:27,193 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:27:27,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:27,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341913345] [2023-12-21 15:27:27,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341913345] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:27:27,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:27:27,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 15:27:27,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686113344] [2023-12-21 15:27:27,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:27:27,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 15:27:27,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:27,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 15:27:27,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 15:27:27,223 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 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 4.0) internal successors, (8), 2 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) [2023-12-21 15:27:27,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:27,247 INFO L93 Difference]: Finished difference Result 26 states and 38 transitions. [2023-12-21 15:27:27,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 15:27:27,261 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) Word has length 8 [2023-12-21 15:27:27,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:27,267 INFO L225 Difference]: With dead ends: 26 [2023-12-21 15:27:27,267 INFO L226 Difference]: Without dead ends: 12 [2023-12-21 15:27:27,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 15:27:27,272 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:27,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 15:27:27,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-21 15:27:27,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-12-21 15:27:27,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:27,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2023-12-21 15:27:27,292 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 8 [2023-12-21 15:27:27,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:27,293 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2023-12-21 15:27:27,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2023-12-21 15:27:27,293 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2023-12-21 15:27:27,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-21 15:27:27,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:27,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:27,299 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 [2023-12-21 15:27:27,494 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 [2023-12-21 15:27:27,495 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:27,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:27,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1347788793, now seen corresponding path program 1 times [2023-12-21 15:27:27,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:27,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577598275] [2023-12-21 15:27:27,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:27:27,497 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 [2023-12-21 15:27:27,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:27,498 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) [2023-12-21 15:27:27,502 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 [2023-12-21 15:27:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:27:27,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 15:27:27,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:27,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 15:27:27,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:27:27,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:27,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577598275] [2023-12-21 15:27:27,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [577598275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:27:27,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:27:27,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 15:27:27,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160659789] [2023-12-21 15:27:27,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:27:27,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 15:27:27,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:27,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 15:27:27,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 15:27:27,562 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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) [2023-12-21 15:27:27,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:27,599 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2023-12-21 15:27:27,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 15:27:27,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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) Word has length 8 [2023-12-21 15:27:27,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:27,601 INFO L225 Difference]: With dead ends: 23 [2023-12-21 15:27:27,601 INFO L226 Difference]: Without dead ends: 13 [2023-12-21 15:27:27,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 15:27:27,603 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:27,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 15:27:27,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-12-21 15:27:27,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-12-21 15:27:27,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:27,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2023-12-21 15:27:27,607 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 8 [2023-12-21 15:27:27,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:27,607 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2023-12-21 15:27:27,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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) [2023-12-21 15:27:27,607 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2023-12-21 15:27:27,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-21 15:27:27,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:27,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:27,641 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 [2023-12-21 15:27:27,809 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 [2023-12-21 15:27:27,809 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:27,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:27,810 INFO L85 PathProgramCache]: Analyzing trace with hash -115742476, now seen corresponding path program 1 times [2023-12-21 15:27:27,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:27,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331329257] [2023-12-21 15:27:27,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:27:27,811 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 [2023-12-21 15:27:27,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:27,812 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) [2023-12-21 15:27:27,814 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 [2023-12-21 15:27:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:27:27,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 15:27:27,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 15:27:27,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:27,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 15:27:27,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:27,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331329257] [2023-12-21 15:27:27,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331329257] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:27,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:27,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-21 15:27:27,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056773794] [2023-12-21 15:27:27,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:27,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 15:27:27,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:27,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 15:27:27,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 15:27:27,911 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:27,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:27,992 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2023-12-21 15:27:27,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 15:27:27,993 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 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 9 [2023-12-21 15:27:27,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:27,993 INFO L225 Difference]: With dead ends: 33 [2023-12-21 15:27:27,993 INFO L226 Difference]: Without dead ends: 23 [2023-12-21 15:27:27,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-21 15:27:27,995 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:27,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 22 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 15:27:27,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-21 15:27:27,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-21 15:27:27,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:28,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2023-12-21 15:27:28,000 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 9 [2023-12-21 15:27:28,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:28,000 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2023-12-21 15:27:28,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:28,001 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2023-12-21 15:27:28,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-21 15:27:28,001 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:28,001 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:28,012 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 [2023-12-21 15:27:28,204 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 [2023-12-21 15:27:28,204 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:28,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:28,205 INFO L85 PathProgramCache]: Analyzing trace with hash -792155541, now seen corresponding path program 1 times [2023-12-21 15:27:28,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:28,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530951635] [2023-12-21 15:27:28,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:27:28,206 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 [2023-12-21 15:27:28,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:28,209 INFO L229 MonitoredProcess]: Starting monitored process 5 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) [2023-12-21 15:27:28,227 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 (5)] Waiting until timeout for monitored process [2023-12-21 15:27:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:27:28,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 15:27:28,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:28,369 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 15:27:28,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:28,468 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 15:27:28,469 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:28,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530951635] [2023-12-21 15:27:28,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530951635] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:28,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:28,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-21 15:27:28,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494962825] [2023-12-21 15:27:28,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:28,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 15:27:28,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:28,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 15:27:28,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 15:27:28,471 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:28,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:28,830 INFO L93 Difference]: Finished difference Result 64 states and 91 transitions. [2023-12-21 15:27:28,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 15:27:28,832 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-21 15:27:28,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:28,832 INFO L225 Difference]: With dead ends: 64 [2023-12-21 15:27:28,832 INFO L226 Difference]: Without dead ends: 47 [2023-12-21 15:27:28,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-21 15:27:28,834 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 93 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:28,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 57 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 15:27:28,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-21 15:27:28,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-12-21 15:27:28,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 46 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:28,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2023-12-21 15:27:28,845 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 21 [2023-12-21 15:27:28,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:28,845 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2023-12-21 15:27:28,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:28,845 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2023-12-21 15:27:28,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-21 15:27:28,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:28,847 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:28,853 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 (5)] Ended with exit code 0 [2023-12-21 15:27:29,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /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 [2023-12-21 15:27:29,048 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:29,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:29,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1047474165, now seen corresponding path program 2 times [2023-12-21 15:27:29,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:29,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032290893] [2023-12-21 15:27:29,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 15:27:29,052 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 [2023-12-21 15:27:29,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:29,053 INFO L229 MonitoredProcess]: Starting monitored process 6 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) [2023-12-21 15:27:29,056 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 (6)] Waiting until timeout for monitored process [2023-12-21 15:27:29,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 15:27:29,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:27:29,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 15:27:29,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:29,275 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-12-21 15:27:29,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:29,660 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-12-21 15:27:29,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:29,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032290893] [2023-12-21 15:27:29,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032290893] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:29,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:29,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-21 15:27:29,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321805740] [2023-12-21 15:27:29,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:29,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 15:27:29,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:29,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 15:27:29,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 15:27:29,664 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:31,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:31,091 INFO L93 Difference]: Finished difference Result 130 states and 187 transitions. [2023-12-21 15:27:31,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 15:27:31,092 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-21 15:27:31,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:31,093 INFO L225 Difference]: With dead ends: 130 [2023-12-21 15:27:31,093 INFO L226 Difference]: Without dead ends: 95 [2023-12-21 15:27:31,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 15:27:31,094 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 420 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:31,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 188 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 15:27:31,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-21 15:27:31,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-12-21 15:27:31,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.2553191489361701) internal successors, (118), 94 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:31,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 118 transitions. [2023-12-21 15:27:31,110 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 118 transitions. Word has length 45 [2023-12-21 15:27:31,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:31,110 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 118 transitions. [2023-12-21 15:27:31,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:31,111 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 118 transitions. [2023-12-21 15:27:31,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 15:27:31,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:31,113 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:31,122 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 (6)] Forceful destruction successful, exit code 0 [2023-12-21 15:27:31,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /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 [2023-12-21 15:27:31,323 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:31,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:31,323 INFO L85 PathProgramCache]: Analyzing trace with hash 707380043, now seen corresponding path program 3 times [2023-12-21 15:27:31,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:31,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896995462] [2023-12-21 15:27:31,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 15:27:31,324 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 [2023-12-21 15:27:31,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:31,325 INFO L229 MonitoredProcess]: Starting monitored process 7 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) [2023-12-21 15:27:31,328 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 (7)] Waiting until timeout for monitored process [2023-12-21 15:27:31,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-12-21 15:27:31,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:27:31,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 15:27:31,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:32,057 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2023-12-21 15:27:32,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:33,332 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2023-12-21 15:27:33,332 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:33,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896995462] [2023-12-21 15:27:33,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896995462] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:33,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:33,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 15:27:33,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728197404] [2023-12-21 15:27:33,333 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:33,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 15:27:33,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:33,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 15:27:33,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 15:27:33,336 INFO L87 Difference]: Start difference. First operand 95 states and 118 transitions. Second operand has 48 states, 48 states have (on average 1.1875) internal successors, (57), 47 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:40,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:40,728 INFO L93 Difference]: Finished difference Result 262 states and 379 transitions. [2023-12-21 15:27:40,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 15:27:40,728 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.1875) internal successors, (57), 47 states have internal predecessors, (57), 0 states have call successors, (0), 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 93 [2023-12-21 15:27:40,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:40,738 INFO L225 Difference]: With dead ends: 262 [2023-12-21 15:27:40,738 INFO L226 Difference]: Without dead ends: 191 [2023-12-21 15:27:40,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 15:27:40,740 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1782 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 2257 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1782 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 2877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:40,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1782 Valid, 656 Invalid, 2877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 2257 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 15:27:40,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-12-21 15:27:40,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2023-12-21 15:27:40,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.2526315789473683) internal successors, (238), 190 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:40,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 238 transitions. [2023-12-21 15:27:40,767 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 238 transitions. Word has length 93 [2023-12-21 15:27:40,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:40,768 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 238 transitions. [2023-12-21 15:27:40,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.1875) internal successors, (57), 47 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:40,768 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 238 transitions. [2023-12-21 15:27:40,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-21 15:27:40,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:40,770 INFO L195 NwaCegarLoop]: trace histogram [46, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:40,776 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 (7)] Forceful destruction successful, exit code 0 [2023-12-21 15:27:40,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /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 [2023-12-21 15:27:40,971 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:40,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:40,972 INFO L85 PathProgramCache]: Analyzing trace with hash -751416885, now seen corresponding path program 4 times [2023-12-21 15:27:40,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:40,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899830825] [2023-12-21 15:27:40,973 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 15:27:40,973 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 [2023-12-21 15:27:40,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:40,974 INFO L229 MonitoredProcess]: Starting monitored process 8 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) [2023-12-21 15:27:41,000 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 (8)] Waiting until timeout for monitored process [2023-12-21 15:27:41,235 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 15:27:41,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:27:41,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 15:27:41,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:42,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 3015 trivial. 0 not checked. [2023-12-21 15:27:42,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:47,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 3015 trivial. 0 not checked. [2023-12-21 15:27:47,159 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:47,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899830825] [2023-12-21 15:27:47,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899830825] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:47,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:47,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-21 15:27:47,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786961907] [2023-12-21 15:27:47,160 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:47,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 15:27:47,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:47,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 15:27:47,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 15:27:47,164 INFO L87 Difference]: Start difference. First operand 191 states and 238 transitions. Second operand has 96 states, 96 states have (on average 1.09375) internal successors, (105), 95 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:28:39,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:28:39,931 INFO L93 Difference]: Finished difference Result 526 states and 763 transitions. [2023-12-21 15:28:39,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-21 15:28:39,932 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.09375) internal successors, (105), 95 states have internal predecessors, (105), 0 states have call successors, (0), 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 189 [2023-12-21 15:28:39,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:28:39,934 INFO L225 Difference]: With dead ends: 526 [2023-12-21 15:28:39,934 INFO L226 Difference]: Without dead ends: 383 [2023-12-21 15:28:39,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 51.0s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-21 15:28:39,939 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 6960 mSDsluCounter, 2397 mSDsCounter, 0 mSdLazyCounter, 9118 mSolverCounterSat, 2370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6960 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 11488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2370 IncrementalHoareTripleChecker+Valid, 9118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:28:39,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6960 Valid, 2451 Invalid, 11488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2370 Valid, 9118 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-12-21 15:28:39,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-12-21 15:28:39,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2023-12-21 15:28:39,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.2513089005235603) internal successors, (478), 382 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:28:39,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 478 transitions. [2023-12-21 15:28:39,970 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 478 transitions. Word has length 189 [2023-12-21 15:28:39,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:28:39,970 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 478 transitions. [2023-12-21 15:28:39,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.09375) internal successors, (105), 95 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:28:39,970 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 478 transitions. [2023-12-21 15:28:39,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2023-12-21 15:28:39,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:28:39,975 INFO L195 NwaCegarLoop]: trace histogram [94, 93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:28:39,984 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 (8)] Forceful destruction successful, exit code 0 [2023-12-21 15:28:40,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /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 [2023-12-21 15:28:40,184 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:28:40,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:28:40,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1585043147, now seen corresponding path program 5 times [2023-12-21 15:28:40,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:28:40,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966537064] [2023-12-21 15:28:40,185 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 15:28:40,186 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 [2023-12-21 15:28:40,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:28:40,187 INFO L229 MonitoredProcess]: Starting monitored process 9 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) [2023-12-21 15:28:40,189 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 (9)] Waiting until timeout for monitored process [2023-12-21 15:29:15,042 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 94 check-sat command(s) [2023-12-21 15:29:15,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:29:15,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 115 conjunts are in the unsatisfiable core [2023-12-21 15:29:15,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:29:18,752 INFO L134 CoverageAnalysis]: Checked inductivity of 17392 backedges. 0 proven. 12927 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2023-12-21 15:29:18,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:29:42,243 INFO L134 CoverageAnalysis]: Checked inductivity of 17392 backedges. 0 proven. 12927 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2023-12-21 15:29:42,243 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:29:42,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966537064] [2023-12-21 15:29:42,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966537064] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:29:42,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:29:42,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 97] total 191 [2023-12-21 15:29:42,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321696943] [2023-12-21 15:29:42,244 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:29:42,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 191 states [2023-12-21 15:29:42,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:29:42,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2023-12-21 15:29:42,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9310, Invalid=26980, Unknown=0, NotChecked=0, Total=36290 [2023-12-21 15:29:42,252 INFO L87 Difference]: Start difference. First operand 383 states and 478 transitions. Second operand has 191 states, 191 states have (on average 2.979057591623037) internal successors, (569), 191 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:37:10,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:37:10,990 INFO L93 Difference]: Finished difference Result 674 states and 959 transitions. [2023-12-21 15:37:10,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2023-12-21 15:37:10,996 INFO L78 Accepts]: Start accepts. Automaton has has 191 states, 191 states have (on average 2.979057591623037) internal successors, (569), 191 states have internal predecessors, (569), 0 states have call successors, (0), 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 381 [2023-12-21 15:37:10,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:37:11,000 INFO L225 Difference]: With dead ends: 674 [2023-12-21 15:37:11,000 INFO L226 Difference]: Without dead ends: 668 [2023-12-21 15:37:11,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4462 ImplicationChecksByTransitivity, 454.7s TimeCoverageRelationStatistics Valid=27261, Invalid=53679, Unknown=0, NotChecked=0, Total=80940 [2023-12-21 15:37:11,007 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 8915 mSDsluCounter, 8966 mSDsCounter, 0 mSdLazyCounter, 27241 mSolverCounterSat, 4743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8915 SdHoareTripleChecker+Valid, 9068 SdHoareTripleChecker+Invalid, 31984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4743 IncrementalHoareTripleChecker+Valid, 27241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2023-12-21 15:37:11,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8915 Valid, 9068 Invalid, 31984 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4743 Valid, 27241 Invalid, 0 Unknown, 0 Unchecked, 17.3s Time] [2023-12-21 15:37:11,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2023-12-21 15:37:11,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 668. [2023-12-21 15:37:11,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 667 states have (on average 1.2863568215892054) internal successors, (858), 667 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:37:11,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 858 transitions. [2023-12-21 15:37:11,048 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 858 transitions. Word has length 381 [2023-12-21 15:37:11,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:37:11,049 INFO L495 AbstractCegarLoop]: Abstraction has 668 states and 858 transitions. [2023-12-21 15:37:11,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 191 states, 191 states have (on average 2.979057591623037) internal successors, (569), 191 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:37:11,050 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 858 transitions. [2023-12-21 15:37:11,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2023-12-21 15:37:11,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:37:11,072 INFO L195 NwaCegarLoop]: trace histogram [188, 188, 188, 94, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:37:11,096 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 (9)] Forceful destruction successful, exit code 0 [2023-12-21 15:37:11,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /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 [2023-12-21 15:37:11,287 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:37:11,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:37:11,288 INFO L85 PathProgramCache]: Analyzing trace with hash 283594009, now seen corresponding path program 6 times [2023-12-21 15:37:11,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:37:11,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333409482] [2023-12-21 15:37:11,289 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 15:37:11,289 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 [2023-12-21 15:37:11,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:37:11,290 INFO L229 MonitoredProcess]: Starting monitored process 10 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) [2023-12-21 15:37:11,291 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 (10)] Waiting until timeout for monitored process [2023-12-21 15:37:40,600 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2023-12-21 15:37:40,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:37:40,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 97 conjunts are in the unsatisfiable core [2023-12-21 15:37:40,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:37:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 57387 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 52922 trivial. 0 not checked. [2023-12-21 15:37:44,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:38:11,074 INFO L134 CoverageAnalysis]: Checked inductivity of 57387 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 52922 trivial. 0 not checked. [2023-12-21 15:38:11,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:38:11,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333409482] [2023-12-21 15:38:11,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333409482] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:38:11,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:38:11,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2023-12-21 15:38:11,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674275319] [2023-12-21 15:38:11,076 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:38:11,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-21 15:38:11,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:38:11,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-21 15:38:11,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9406, Invalid=27266, Unknown=0, NotChecked=0, Total=36672 [2023-12-21 15:38:11,081 INFO L87 Difference]: Start difference. First operand 668 states and 858 transitions. Second operand has 192 states, 192 states have (on average 1.046875) internal successors, (201), 191 states have internal predecessors, (201), 0 states have call successors, (0), 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... [2023-12-21 15:41:54,508 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 (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 15:41:54,511 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 [2023-12-21 15:41:54,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2023-12-21 15:41:54,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1363 GetRequests, 1140 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 243.0s TimeCoverageRelationStatistics Valid=15550, Invalid=34402, Unknown=0, NotChecked=0, Total=49952 [2023-12-21 15:41:54,533 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-21 15:41:54,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 9154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9153 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-21 15:41:54,534 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 15:41:54,562 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 (10)] Ended with exit code 0 [2023-12-21 15:41:54,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /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 [2023-12-21 15:41:54,735 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (668states) and FLOYD_HOARE automaton (currently 129 states, 192 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 224 known predicates. [2023-12-21 15:41:54,741 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1] [2023-12-21 15:41:54,744 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 15:41:54,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 03:41:54 BoogieIcfgContainer [2023-12-21 15:41:54,746 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 15:41:54,746 INFO L158 Benchmark]: Toolchain (without parser) took 868307.95ms. Allocated memory was 188.7MB in the beginning and 226.5MB in the end (delta: 37.7MB). Free memory was 145.3MB in the beginning and 81.4MB in the end (delta: 63.8MB). Peak memory consumption was 150.3MB. Max. memory is 8.0GB. [2023-12-21 15:41:54,746 INFO L158 Benchmark]: CDTParser took 0.63ms. Allocated memory is still 188.7MB. Free memory is still 146.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 15:41:54,747 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.33ms. Allocated memory is still 188.7MB. Free memory was 144.8MB in the beginning and 133.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-21 15:41:54,747 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.44ms. Allocated memory is still 188.7MB. Free memory was 133.8MB in the beginning and 132.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 15:41:54,747 INFO L158 Benchmark]: Boogie Preprocessor took 24.53ms. Allocated memory is still 188.7MB. Free memory was 132.2MB in the beginning and 130.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 15:41:54,747 INFO L158 Benchmark]: RCFGBuilder took 304.71ms. Allocated memory is still 188.7MB. Free memory was 130.1MB in the beginning and 117.0MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-21 15:41:54,748 INFO L158 Benchmark]: TraceAbstraction took 867737.01ms. Allocated memory was 188.7MB in the beginning and 226.5MB in the end (delta: 37.7MB). Free memory was 116.0MB in the beginning and 81.4MB in the end (delta: 34.5MB). Peak memory consumption was 121.0MB. Max. memory is 8.0GB. [2023-12-21 15:41:54,749 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63ms. Allocated memory is still 188.7MB. Free memory is still 146.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 201.33ms. Allocated memory is still 188.7MB. Free memory was 144.8MB in the beginning and 133.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.44ms. Allocated memory is still 188.7MB. Free memory was 133.8MB in the beginning and 132.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.53ms. Allocated memory is still 188.7MB. Free memory was 132.2MB in the beginning and 130.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 304.71ms. Allocated memory is still 188.7MB. Free memory was 130.1MB in the beginning and 117.0MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 867737.01ms. Allocated memory was 188.7MB in the beginning and 226.5MB in the end (delta: 37.7MB). Free memory was 116.0MB in the beginning and 81.4MB in the end (delta: 34.5MB). Peak memory consumption was 121.0MB. 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: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (668states) and FLOYD_HOARE automaton (currently 129 states, 192 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 224 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 867.7s, OverallIterations: 9, TraceHistogramMax: 188, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 734.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18185 SdHoareTripleChecker+Valid, 32.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18185 mSDsluCounter, 12473 SdHoareTripleChecker+Invalid, 27.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12223 mSDsCounter, 7937 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48497 IncrementalHoareTripleChecker+Invalid, 56434 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7937 mSolverCounterUnsat, 250 mSDtfsCounter, 48497 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3112 GetRequests, 2346 SyntacticMatches, 0 SemanticMatches, 765 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6307 ImplicationChecksByTransitivity, 756.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=668occurred in iteration=8, InterpolantAutomatonStates: 382, 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 64.4s SatisfiabilityAnalysisTime, 66.0s InterpolantComputationTime, 1420 NumberOfCodeBlocks, 1108 NumberOfCodeBlocksAsserted, 208 NumberOfCheckSat, 2808 ConstructedInterpolants, 0 QuantifiedInterpolants, 8146 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3155 ConjunctsInSsa, 308 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 122364/159948 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