/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/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 12:37:45,525 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 12:37:45,613 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 12:37:45,618 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 12:37:45,618 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 12:37:45,646 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 12:37:45,647 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 12:37:45,647 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 12:37:45,648 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 12:37:45,651 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 12:37:45,652 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 12:37:45,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 12:37:45,653 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 12:37:45,654 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 12:37:45,654 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 12:37:45,655 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 12:37:45,655 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 12:37:45,655 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 12:37:45,655 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 12:37:45,657 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 12:37:45,657 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 12:37:45,657 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 12:37:45,657 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 12:37:45,658 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 12:37:45,658 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 12:37:45,658 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 12:37:45,658 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 12:37:45,658 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 12:37:45,659 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 12:37:45,659 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 12:37:45,660 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 12:37:45,660 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 12:37:45,660 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 12:37:45,660 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 12:37:45,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 12:37:45,661 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 12:37:45,661 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 12:37:45,661 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 12:37:45,661 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 12:37:45,661 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 12:37:45,661 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 12:37:45,662 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 12:37:45,662 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 12:37:45,662 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 12:37:45,663 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 12:37:45,663 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 12:37:45,663 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 12:37:45,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 12:37:45,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 12:37:45,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 12:37:45,941 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 12:37:45,942 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 12:37:45,944 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i [2023-12-16 12:37:47,191 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 12:37:47,379 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 12:37:47,380 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i [2023-12-16 12:37:47,403 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/323b6e7cb/a4a62048d5b84cf6be3bfb9c797ee846/FLAG2e29c2603 [2023-12-16 12:37:47,420 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/323b6e7cb/a4a62048d5b84cf6be3bfb9c797ee846 [2023-12-16 12:37:47,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 12:37:47,425 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 12:37:47,429 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 12:37:47,429 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 12:37:47,433 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 12:37:47,434 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:37:47" (1/1) ... [2023-12-16 12:37:47,435 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@636a1307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:37:47, skipping insertion in model container [2023-12-16 12:37:47,435 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:37:47" (1/1) ... [2023-12-16 12:37:47,468 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 12:37:47,611 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i[919,932] [2023-12-16 12:37:47,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 12:37:47,689 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 12:37:47,698 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i[919,932] [2023-12-16 12:37:47,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 12:37:47,758 INFO L206 MainTranslator]: Completed translation [2023-12-16 12:37:47,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:37:47 WrapperNode [2023-12-16 12:37:47,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 12:37:47,760 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 12:37:47,760 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 12:37:47,760 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 12:37:47,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:37:47" (1/1) ... [2023-12-16 12:37:47,774 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:37:47" (1/1) ... [2023-12-16 12:37:47,803 INFO L138 Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 177 [2023-12-16 12:37:47,803 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 12:37:47,804 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 12:37:47,804 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 12:37:47,804 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 12:37:47,814 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:37:47" (1/1) ... [2023-12-16 12:37:47,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:37:47" (1/1) ... [2023-12-16 12:37:47,820 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:37:47" (1/1) ... [2023-12-16 12:37:47,841 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 12:37:47,842 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:37:47" (1/1) ... [2023-12-16 12:37:47,842 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:37:47" (1/1) ... [2023-12-16 12:37:47,857 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:37:47" (1/1) ... [2023-12-16 12:37:47,861 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:37:47" (1/1) ... [2023-12-16 12:37:47,863 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:37:47" (1/1) ... [2023-12-16 12:37:47,865 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:37:47" (1/1) ... [2023-12-16 12:37:47,868 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 12:37:47,869 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 12:37:47,870 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 12:37:47,870 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 12:37:47,871 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:37:47" (1/1) ... [2023-12-16 12:37:47,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 12:37:47,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 12:37:47,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 12:37:47,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 12:37:47,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 12:37:47,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 12:37:47,944 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 12:37:47,946 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 12:37:47,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 12:37:47,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 12:37:48,025 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 12:37:48,027 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 12:37:48,759 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 12:37:48,807 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 12:37:48,808 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 12:37:48,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:37:48 BoogieIcfgContainer [2023-12-16 12:37:48,808 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 12:37:48,810 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 12:37:48,810 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 12:37:48,814 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 12:37:48,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:37:47" (1/3) ... [2023-12-16 12:37:48,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d31844c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:37:48, skipping insertion in model container [2023-12-16 12:37:48,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:37:47" (2/3) ... [2023-12-16 12:37:48,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d31844c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:37:48, skipping insertion in model container [2023-12-16 12:37:48,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:37:48" (3/3) ... [2023-12-16 12:37:48,816 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i [2023-12-16 12:37:48,831 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 12:37:48,832 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 12:37:48,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 12:37:48,880 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;@1b77466, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 12:37:48,880 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 12:37:48,886 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 45 states have (on average 1.5555555555555556) internal successors, (70), 46 states have internal predecessors, (70), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 12:37:48,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-16 12:37:48,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:37:48,902 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:37:48,902 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:37:48,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:37:48,907 INFO L85 PathProgramCache]: Analyzing trace with hash 386299767, now seen corresponding path program 1 times [2023-12-16 12:37:48,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:37:48,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136620094] [2023-12-16 12:37:48,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:37:48,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:37:48,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:37:48,920 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:37:48,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 12:37:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:37:49,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 12:37:49,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:37:49,261 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2023-12-16 12:37:49,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:37:49,262 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:37:49,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136620094] [2023-12-16 12:37:49,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136620094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:37:49,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:37:49,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 12:37:49,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171039495] [2023-12-16 12:37:49,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:37:49,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 12:37:49,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:37:49,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 12:37:49,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 12:37:49,302 INFO L87 Difference]: Start difference. First operand has 68 states, 45 states have (on average 1.5555555555555556) internal successors, (70), 46 states have internal predecessors, (70), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-16 12:37:49,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:37:49,389 INFO L93 Difference]: Finished difference Result 133 states and 238 transitions. [2023-12-16 12:37:49,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 12:37:49,398 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 133 [2023-12-16 12:37:49,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:37:49,406 INFO L225 Difference]: With dead ends: 133 [2023-12-16 12:37:49,406 INFO L226 Difference]: Without dead ends: 66 [2023-12-16 12:37:49,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 12:37:49,413 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 12:37:49,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 12:37:49,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-16 12:37:49,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-12-16 12:37:49,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 44 states have internal predecessors, (65), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 12:37:49,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 105 transitions. [2023-12-16 12:37:49,448 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 105 transitions. Word has length 133 [2023-12-16 12:37:49,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:37:49,449 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 105 transitions. [2023-12-16 12:37:49,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-16 12:37:49,449 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 105 transitions. [2023-12-16 12:37:49,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-16 12:37:49,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:37:49,453 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:37:49,463 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 (2)] Ended with exit code 0 [2023-12-16 12:37:49,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:37:49,658 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:37:49,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:37:49,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1968567731, now seen corresponding path program 1 times [2023-12-16 12:37:49,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:37:49,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094364606] [2023-12-16 12:37:49,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:37:49,660 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:37:49,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:37:49,662 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:37:49,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 12:37:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:37:49,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 12:37:49,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:37:50,244 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-16 12:37:50,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:37:50,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:37:50,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094364606] [2023-12-16 12:37:50,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094364606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:37:50,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:37:50,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 12:37:50,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927541471] [2023-12-16 12:37:50,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:37:50,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 12:37:50,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:37:50,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 12:37:50,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 12:37:50,248 INFO L87 Difference]: Start difference. First operand 66 states and 105 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 12:37:50,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:37:50,543 INFO L93 Difference]: Finished difference Result 214 states and 340 transitions. [2023-12-16 12:37:50,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 12:37:50,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 133 [2023-12-16 12:37:50,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:37:50,553 INFO L225 Difference]: With dead ends: 214 [2023-12-16 12:37:50,553 INFO L226 Difference]: Without dead ends: 149 [2023-12-16 12:37:50,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 12:37:50,555 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 122 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 12:37:50,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 298 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 12:37:50,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-12-16 12:37:50,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 131. [2023-12-16 12:37:50,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 88 states have (on average 1.4659090909090908) internal successors, (129), 88 states have internal predecessors, (129), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 12:37:50,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 209 transitions. [2023-12-16 12:37:50,582 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 209 transitions. Word has length 133 [2023-12-16 12:37:50,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:37:50,583 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 209 transitions. [2023-12-16 12:37:50,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 12:37:50,583 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 209 transitions. [2023-12-16 12:37:50,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-16 12:37:50,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:37:50,585 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:37:50,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 12:37:50,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:37:50,793 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:37:50,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:37:50,794 INFO L85 PathProgramCache]: Analyzing trace with hash -689223881, now seen corresponding path program 1 times [2023-12-16 12:37:50,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:37:50,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258691398] [2023-12-16 12:37:50,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:37:50,795 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:37:50,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:37:50,796 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:37:50,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 12:37:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:37:51,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 12:37:51,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:37:51,351 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-16 12:37:51,352 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:37:51,352 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:37:51,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258691398] [2023-12-16 12:37:51,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258691398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:37:51,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:37:51,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 12:37:51,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975276833] [2023-12-16 12:37:51,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:37:51,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 12:37:51,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:37:51,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 12:37:51,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 12:37:51,365 INFO L87 Difference]: Start difference. First operand 131 states and 209 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 12:37:51,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:37:51,730 INFO L93 Difference]: Finished difference Result 343 states and 545 transitions. [2023-12-16 12:37:51,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 12:37:51,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 134 [2023-12-16 12:37:51,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:37:51,740 INFO L225 Difference]: With dead ends: 343 [2023-12-16 12:37:51,740 INFO L226 Difference]: Without dead ends: 213 [2023-12-16 12:37:51,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 12:37:51,742 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 70 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 12:37:51,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 296 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 12:37:51,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-12-16 12:37:51,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 185. [2023-12-16 12:37:51,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 121 states have (on average 1.43801652892562) internal successors, (174), 121 states have internal predecessors, (174), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-16 12:37:51,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 294 transitions. [2023-12-16 12:37:51,784 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 294 transitions. Word has length 134 [2023-12-16 12:37:51,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:37:51,785 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 294 transitions. [2023-12-16 12:37:51,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 12:37:51,785 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 294 transitions. [2023-12-16 12:37:51,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-16 12:37:51,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:37:51,787 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:37:51,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 12:37:51,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:37:51,995 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:37:51,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:37:51,996 INFO L85 PathProgramCache]: Analyzing trace with hash -296196871, now seen corresponding path program 1 times [2023-12-16 12:37:51,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:37:51,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061594864] [2023-12-16 12:37:51,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:37:51,997 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:37:51,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:37:51,998 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) [2023-12-16 12:37:52,000 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 (5)] Waiting until timeout for monitored process [2023-12-16 12:37:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:37:52,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 12:37:52,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:37:52,872 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-16 12:37:52,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:37:52,873 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:37:52,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061594864] [2023-12-16 12:37:52,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061594864] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:37:52,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:37:52,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 12:37:52,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850696553] [2023-12-16 12:37:52,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:37:52,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 12:37:52,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:37:52,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 12:37:52,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 12:37:52,880 INFO L87 Difference]: Start difference. First operand 185 states and 294 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 12:37:53,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:37:53,933 INFO L93 Difference]: Finished difference Result 447 states and 712 transitions. [2023-12-16 12:37:53,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 12:37:53,934 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 134 [2023-12-16 12:37:53,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:37:53,937 INFO L225 Difference]: With dead ends: 447 [2023-12-16 12:37:53,937 INFO L226 Difference]: Without dead ends: 317 [2023-12-16 12:37:53,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-12-16 12:37:53,939 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 97 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 12:37:53,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 527 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 12:37:53,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-12-16 12:37:53,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 309. [2023-12-16 12:37:53,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 203 states have (on average 1.4334975369458127) internal successors, (291), 203 states have internal predecessors, (291), 100 states have call successors, (100), 5 states have call predecessors, (100), 5 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-16 12:37:53,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 491 transitions. [2023-12-16 12:37:53,980 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 491 transitions. Word has length 134 [2023-12-16 12:37:53,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:37:53,981 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 491 transitions. [2023-12-16 12:37:53,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 12:37:53,981 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 491 transitions. [2023-12-16 12:37:53,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-16 12:37:53,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:37:53,983 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:37:54,008 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 (5)] Forceful destruction successful, exit code 0 [2023-12-16 12:37:54,208 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 [2023-12-16 12:37:54,209 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:37:54,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:37:54,209 INFO L85 PathProgramCache]: Analyzing trace with hash 749563145, now seen corresponding path program 1 times [2023-12-16 12:37:54,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:37:54,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905203318] [2023-12-16 12:37:54,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:37:54,210 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:37:54,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:37:54,211 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) [2023-12-16 12:37:54,214 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 [2023-12-16 12:37:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:37:54,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-16 12:37:54,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:38:00,664 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 402 proven. 108 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-16 12:38:00,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 12:38:37,581 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 (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 12:38:37,588 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 12:38:38,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 [2023-12-16 12:38:38,627 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 (6)] Ended with exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown