/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_codestructure_dependencies_file-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 19:34:06,981 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 19:34:07,050 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 19:34:07,054 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 19:34:07,054 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 19:34:07,076 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 19:34:07,077 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 19:34:07,077 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 19:34:07,078 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 19:34:07,080 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 19:34:07,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 19:34:07,081 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 19:34:07,081 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 19:34:07,082 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 19:34:07,082 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 19:34:07,083 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 19:34:07,083 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 19:34:07,083 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 19:34:07,083 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 19:34:07,083 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 19:34:07,083 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 19:34:07,084 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 19:34:07,084 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 19:34:07,084 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 19:34:07,084 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 19:34:07,084 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 19:34:07,084 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 19:34:07,084 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 19:34:07,085 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 19:34:07,085 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 19:34:07,085 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 19:34:07,085 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 19:34:07,086 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 19:34:07,086 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 19:34:07,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 19:34:07,086 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 19:34:07,086 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 19:34:07,086 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 19:34:07,086 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 19:34:07,086 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 19:34:07,086 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 19:34:07,087 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 19:34:07,087 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 19:34:07,087 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 19:34:07,087 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 19:34:07,087 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 19:34:07,087 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 19:34:07,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 19:34:07,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 19:34:07,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 19:34:07,295 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 19:34:07,295 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 19:34:07,296 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-1.i [2023-12-22 19:34:08,351 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 19:34:08,500 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 19:34:08,500 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-1.i [2023-12-22 19:34:08,506 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bb70edab/97a2aafed8544e7faf72b32bc28bae0b/FLAGc89c14543 [2023-12-22 19:34:08,517 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bb70edab/97a2aafed8544e7faf72b32bc28bae0b [2023-12-22 19:34:08,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 19:34:08,519 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 19:34:08,520 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 19:34:08,520 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 19:34:08,523 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 19:34:08,523 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:34:08" (1/1) ... [2023-12-22 19:34:08,524 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78b3fbfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:08, skipping insertion in model container [2023-12-22 19:34:08,524 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:34:08" (1/1) ... [2023-12-22 19:34:08,552 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 19:34:08,659 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_codestructure_dependencies_file-1.i[918,931] [2023-12-22 19:34:08,704 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 19:34:08,714 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 19:34:08,721 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_codestructure_dependencies_file-1.i[918,931] [2023-12-22 19:34:08,751 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 19:34:08,763 INFO L206 MainTranslator]: Completed translation [2023-12-22 19:34:08,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:08 WrapperNode [2023-12-22 19:34:08,763 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 19:34:08,771 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 19:34:08,771 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 19:34:08,772 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 19:34:08,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:08" (1/1) ... [2023-12-22 19:34:08,783 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:08" (1/1) ... [2023-12-22 19:34:08,809 INFO L138 Inliner]: procedures = 27, calls = 36, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 141 [2023-12-22 19:34:08,809 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 19:34:08,810 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 19:34:08,810 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 19:34:08,810 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 19:34:08,822 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:08" (1/1) ... [2023-12-22 19:34:08,823 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:08" (1/1) ... [2023-12-22 19:34:08,826 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:08" (1/1) ... [2023-12-22 19:34:08,835 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]. [2023-12-22 19:34:08,835 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:08" (1/1) ... [2023-12-22 19:34:08,836 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:08" (1/1) ... [2023-12-22 19:34:08,853 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:08" (1/1) ... [2023-12-22 19:34:08,856 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:08" (1/1) ... [2023-12-22 19:34:08,857 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:08" (1/1) ... [2023-12-22 19:34:08,858 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:08" (1/1) ... [2023-12-22 19:34:08,861 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 19:34:08,861 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 19:34:08,861 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 19:34:08,861 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 19:34:08,862 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:08" (1/1) ... [2023-12-22 19:34:08,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 19:34:08,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 19:34:08,900 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) [2023-12-22 19:34:08,916 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 [2023-12-22 19:34:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 19:34:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 19:34:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-22 19:34:08,924 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-22 19:34:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 19:34:08,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 19:34:08,974 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 19:34:08,976 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 19:34:09,227 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 19:34:09,279 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 19:34:09,280 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 19:34:09,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:34:09 BoogieIcfgContainer [2023-12-22 19:34:09,280 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 19:34:09,281 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 19:34:09,281 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 19:34:09,283 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 19:34:09,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:34:08" (1/3) ... [2023-12-22 19:34:09,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ed8061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:34:09, skipping insertion in model container [2023-12-22 19:34:09,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:08" (2/3) ... [2023-12-22 19:34:09,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ed8061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:34:09, skipping insertion in model container [2023-12-22 19:34:09,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:34:09" (3/3) ... [2023-12-22 19:34:09,292 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_dependencies_file-1.i [2023-12-22 19:34:09,304 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 19:34:09,304 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 19:34:09,334 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 19:34:09,339 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;@167da578, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 19:34:09,339 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 19:34:09,342 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 34 states have internal predecessors, (48), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-22 19:34:09,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-22 19:34:09,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 19:34:09,352 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 19:34:09,353 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 19:34:09,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 19:34:09,357 INFO L85 PathProgramCache]: Analyzing trace with hash 890303789, now seen corresponding path program 1 times [2023-12-22 19:34:09,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 19:34:09,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874981489] [2023-12-22 19:34:09,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 19:34:09,365 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 [2023-12-22 19:34:09,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 19:34:09,368 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) [2023-12-22 19:34:09,369 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 [2023-12-22 19:34:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 19:34:09,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 19:34:09,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 19:34:09,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 512 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2023-12-22 19:34:09,581 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 19:34:09,581 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 19:34:09,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874981489] [2023-12-22 19:34:09,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874981489] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 19:34:09,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 19:34:09,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 19:34:09,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886356713] [2023-12-22 19:34:09,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 19:34:09,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 19:34:09,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 19:34:09,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 19:34:09,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 19:34:09,619 INFO L87 Difference]: Start difference. First operand has 59 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 34 states have internal predecessors, (48), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-22 19:34:09,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 19:34:09,655 INFO L93 Difference]: Finished difference Result 115 states and 209 transitions. [2023-12-22 19:34:09,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 19:34:09,658 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 139 [2023-12-22 19:34:09,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 19:34:09,665 INFO L225 Difference]: With dead ends: 115 [2023-12-22 19:34:09,665 INFO L226 Difference]: Without dead ends: 57 [2023-12-22 19:34:09,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 19:34:09,670 INFO L413 NwaCegarLoop]: 84 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, 84 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 [2023-12-22 19:34:09,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 19:34:09,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-12-22 19:34:09,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-12-22 19:34:09,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-22 19:34:09,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 87 transitions. [2023-12-22 19:34:09,697 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 87 transitions. Word has length 139 [2023-12-22 19:34:09,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 19:34:09,698 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 87 transitions. [2023-12-22 19:34:09,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-22 19:34:09,698 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 87 transitions. [2023-12-22 19:34:09,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-22 19:34:09,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 19:34:09,702 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 19:34:09,712 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 [2023-12-22 19:34:09,907 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 [2023-12-22 19:34:09,907 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 19:34:09,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 19:34:09,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1205086289, now seen corresponding path program 1 times [2023-12-22 19:34:09,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 19:34:09,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681739768] [2023-12-22 19:34:09,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 19:34:09,910 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 [2023-12-22 19:34:09,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 19:34:09,917 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) [2023-12-22 19:34:09,917 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 [2023-12-22 19:34:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 19:34:10,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 19:34:10,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 19:34:10,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-22 19:34:10,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 19:34:10,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 19:34:10,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681739768] [2023-12-22 19:34:10,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681739768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 19:34:10,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 19:34:10,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 19:34:10,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303987094] [2023-12-22 19:34:10,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 19:34:10,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 19:34:10,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 19:34:10,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 19:34:10,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 19:34:10,310 INFO L87 Difference]: Start difference. First operand 57 states and 87 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-22 19:34:10,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 19:34:10,360 INFO L93 Difference]: Finished difference Result 169 states and 259 transitions. [2023-12-22 19:34:10,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 19:34:10,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 139 [2023-12-22 19:34:10,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 19:34:10,362 INFO L225 Difference]: With dead ends: 169 [2023-12-22 19:34:10,362 INFO L226 Difference]: Without dead ends: 113 [2023-12-22 19:34:10,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 19:34:10,363 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 15 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 19:34:10,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 163 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 19:34:10,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-22 19:34:10,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2023-12-22 19:34:10,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 62 states have internal predecessors, (79), 46 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-22 19:34:10,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 171 transitions. [2023-12-22 19:34:10,382 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 171 transitions. Word has length 139 [2023-12-22 19:34:10,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 19:34:10,383 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 171 transitions. [2023-12-22 19:34:10,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-22 19:34:10,383 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 171 transitions. [2023-12-22 19:34:10,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-22 19:34:10,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 19:34:10,385 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 19:34:10,394 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 [2023-12-22 19:34:10,590 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 [2023-12-22 19:34:10,591 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 19:34:10,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 19:34:10,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1296505093, now seen corresponding path program 1 times [2023-12-22 19:34:10,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 19:34:10,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854681972] [2023-12-22 19:34:10,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 19:34:10,593 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 [2023-12-22 19:34:10,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 19:34:10,597 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) [2023-12-22 19:34:10,598 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 [2023-12-22 19:34:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 19:34:10,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 19:34:10,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 19:34:11,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 527 proven. 48 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-12-22 19:34:11,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 19:34:11,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-22 19:34:11,100 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 19:34:11,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854681972] [2023-12-22 19:34:11,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854681972] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 19:34:11,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 19:34:11,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-22 19:34:11,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635508561] [2023-12-22 19:34:11,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 19:34:11,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 19:34:11,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 19:34:11,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 19:34:11,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-22 19:34:11,102 INFO L87 Difference]: Start difference. First operand 111 states and 171 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-22 19:34:11,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 19:34:11,162 INFO L93 Difference]: Finished difference Result 327 states and 503 transitions. [2023-12-22 19:34:11,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 19:34:11,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 140 [2023-12-22 19:34:11,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 19:34:11,164 INFO L225 Difference]: With dead ends: 327 [2023-12-22 19:34:11,164 INFO L226 Difference]: Without dead ends: 217 [2023-12-22 19:34:11,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-22 19:34:11,165 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 77 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 19:34:11,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 148 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 19:34:11,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-22 19:34:11,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 127. [2023-12-22 19:34:11,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 78 states have (on average 1.3333333333333333) internal successors, (104), 78 states have internal predecessors, (104), 46 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-22 19:34:11,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 196 transitions. [2023-12-22 19:34:11,182 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 196 transitions. Word has length 140 [2023-12-22 19:34:11,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 19:34:11,182 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 196 transitions. [2023-12-22 19:34:11,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-22 19:34:11,182 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 196 transitions. [2023-12-22 19:34:11,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-22 19:34:11,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 19:34:11,184 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 19:34:11,191 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 (4)] Ended with exit code 0 [2023-12-22 19:34:11,391 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 [2023-12-22 19:34:11,392 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 19:34:11,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 19:34:11,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1296564675, now seen corresponding path program 1 times [2023-12-22 19:34:11,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 19:34:11,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965691579] [2023-12-22 19:34:11,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 19:34:11,393 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 [2023-12-22 19:34:11,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 19:34:11,394 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) [2023-12-22 19:34:11,401 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 [2023-12-22 19:34:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 19:34:11,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-22 19:34:11,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 19:34:13,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 318 proven. 54 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2023-12-22 19:34:13,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-22 19:42:02,515 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 (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 19:42:02,516 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 [2023-12-22 19:42:03,665 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 [2023-12-22 19:42:03,666 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 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown