/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-63.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-02 21:38:54,738 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 21:38:54,789 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-02 21:38:54,792 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 21:38:54,792 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 21:38:54,807 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 21:38:54,807 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 21:38:54,807 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 21:38:54,808 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-02 21:38:54,808 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-02 21:38:54,808 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 21:38:54,809 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 21:38:54,809 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 21:38:54,810 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 21:38:54,810 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 21:38:54,810 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 21:38:54,810 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 21:38:54,811 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 21:38:54,811 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 21:38:54,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 21:38:54,811 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 21:38:54,812 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 21:38:54,812 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 21:38:54,812 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 21:38:54,813 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 21:38:54,813 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 21:38:54,813 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 21:38:54,813 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 21:38:54,813 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 21:38:54,813 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 21:38:54,814 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 21:38:54,814 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 21:38:54,814 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 21:38:54,814 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 21:38:54,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 21:38:54,815 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 21:38:54,815 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 21:38:54,815 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 21:38:54,815 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-02 21:38:54,815 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 21:38:54,815 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 21:38:54,816 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-02 21:38:54,816 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-02 21:38:54,816 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 21:38:54,816 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:38:54,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 21:38:55,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 21:38:55,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 21:38:55,004 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 21:38:55,005 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 21:38:55,006 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-63.i [2024-11-02 21:38:56,210 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 21:38:56,399 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 21:38:56,399 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-63.i [2024-11-02 21:38:56,405 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce3b1686f/d99a9087d54b4e93874f1302bb19ab27/FLAGbd0d54f61 [2024-11-02 21:38:56,799 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce3b1686f/d99a9087d54b4e93874f1302bb19ab27 [2024-11-02 21:38:56,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 21:38:56,804 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-02 21:38:56,805 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 21:38:56,805 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 21:38:56,809 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 21:38:56,810 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:38:56" (1/1) ... [2024-11-02 21:38:56,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32bde640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:38:56, skipping insertion in model container [2024-11-02 21:38:56,811 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:38:56" (1/1) ... [2024-11-02 21:38:56,838 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 21:38:56,971 WARN L250 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_operatoramount_amount100_file-63.i[916,929] [2024-11-02 21:38:57,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 21:38:57,039 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 21:38:57,048 WARN L250 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_operatoramount_amount100_file-63.i[916,929] [2024-11-02 21:38:57,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 21:38:57,099 INFO L204 MainTranslator]: Completed translation [2024-11-02 21:38:57,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:38:57 WrapperNode [2024-11-02 21:38:57,099 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 21:38:57,100 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 21:38:57,100 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 21:38:57,100 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 21:38:57,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:38:57" (1/1) ... [2024-11-02 21:38:57,118 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:38:57" (1/1) ... [2024-11-02 21:38:57,148 INFO L138 Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 178 [2024-11-02 21:38:57,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 21:38:57,150 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 21:38:57,150 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 21:38:57,150 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 21:38:57,158 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:38:57" (1/1) ... [2024-11-02 21:38:57,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:38:57" (1/1) ... [2024-11-02 21:38:57,161 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:38:57" (1/1) ... [2024-11-02 21:38:57,175 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]. [2024-11-02 21:38:57,175 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:38:57" (1/1) ... [2024-11-02 21:38:57,175 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:38:57" (1/1) ... [2024-11-02 21:38:57,182 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:38:57" (1/1) ... [2024-11-02 21:38:57,185 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:38:57" (1/1) ... [2024-11-02 21:38:57,190 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:38:57" (1/1) ... [2024-11-02 21:38:57,196 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:38:57" (1/1) ... [2024-11-02 21:38:57,199 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 21:38:57,203 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 21:38:57,203 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 21:38:57,203 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 21:38:57,205 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:38:57" (1/1) ... [2024-11-02 21:38:57,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 21:38:57,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:38:57,231 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) [2024-11-02 21:38:57,241 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 [2024-11-02 21:38:57,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 21:38:57,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-02 21:38:57,257 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 21:38:57,257 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 21:38:57,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 21:38:57,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 21:38:57,327 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 21:38:57,328 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 21:38:57,981 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-11-02 21:38:57,981 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 21:38:58,013 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 21:38:58,013 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 21:38:58,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:38:58 BoogieIcfgContainer [2024-11-02 21:38:58,014 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 21:38:58,019 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 21:38:58,020 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 21:38:58,022 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 21:38:58,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:38:56" (1/3) ... [2024-11-02 21:38:58,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6979ac4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:38:58, skipping insertion in model container [2024-11-02 21:38:58,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:38:57" (2/3) ... [2024-11-02 21:38:58,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6979ac4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:38:58, skipping insertion in model container [2024-11-02 21:38:58,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:38:58" (3/3) ... [2024-11-02 21:38:58,030 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-63.i [2024-11-02 21:38:58,042 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 21:38:58,042 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 21:38:58,089 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 21:38:58,094 INFO L333 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, 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;@59ae6555, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 21:38:58,094 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 21:38:58,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 53 states have (on average 1.471698113207547) internal successors, (78), 54 states have internal predecessors, (78), 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) [2024-11-02 21:38:58,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-02 21:38:58,108 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:38:58,108 INFO L215 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, 1, 1, 1, 1, 1] [2024-11-02 21:38:58,109 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:38:58,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:38:58,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1892635537, now seen corresponding path program 1 times [2024-11-02 21:38:58,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:38:58,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965745232] [2024-11-02 21:38:58,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:38:58,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:38:58,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:38:58,125 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:38:58,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 21:38:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:38:58,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-02 21:38:58,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:38:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-02 21:38:58,366 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:38:58,493 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-02 21:38:58,493 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:38:58,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965745232] [2024-11-02 21:38:58,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [965745232] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 21:38:58,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 21:38:58,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-02 21:38:58,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587920025] [2024-11-02 21:38:58,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 21:38:58,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 21:38:58,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:38:58,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 21:38:58,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 21:38:58,525 INFO L87 Difference]: Start difference. First operand has 76 states, 53 states have (on average 1.471698113207547) internal successors, (78), 54 states have internal predecessors, (78), 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 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-02 21:38:58,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:38:58,550 INFO L93 Difference]: Finished difference Result 145 states and 250 transitions. [2024-11-02 21:38:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 21:38:58,552 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 140 [2024-11-02 21:38:58,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:38:58,556 INFO L225 Difference]: With dead ends: 145 [2024-11-02 21:38:58,557 INFO L226 Difference]: Without dead ends: 72 [2024-11-02 21:38:58,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 21:38:58,561 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 21:38:58,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 21:38:58,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-02 21:38:58,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-02 21:38:58,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 50 states have (on average 1.38) internal successors, (69), 50 states have internal predecessors, (69), 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) [2024-11-02 21:38:58,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 109 transitions. [2024-11-02 21:38:58,594 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 109 transitions. Word has length 140 [2024-11-02 21:38:58,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:38:58,594 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 109 transitions. [2024-11-02 21:38:58,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-02 21:38:58,595 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 109 transitions. [2024-11-02 21:38:58,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-02 21:38:58,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:38:58,597 INFO L215 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, 1, 1, 1, 1, 1] [2024-11-02 21:38:58,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 21:38:58,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:38:58,798 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:38:58,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:38:58,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1501656533, now seen corresponding path program 1 times [2024-11-02 21:38:58,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:38:58,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119207418] [2024-11-02 21:38:58,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:38:58,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:38:58,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:38:58,802 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:38:58,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 21:38:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:38:58,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 21:38:58,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:38:59,147 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-02 21:38:59,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:38:59,320 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-02 21:38:59,320 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:38:59,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119207418] [2024-11-02 21:38:59,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2119207418] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:38:59,321 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:38:59,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2024-11-02 21:38:59,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009523414] [2024-11-02 21:38:59,321 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:38:59,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 21:38:59,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:38:59,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 21:38:59,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 21:38:59,326 INFO L87 Difference]: Start difference. First operand 72 states and 109 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-11-02 21:39:00,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:39:00,125 INFO L93 Difference]: Finished difference Result 335 states and 503 transitions. [2024-11-02 21:39:00,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 21:39:00,126 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 140 [2024-11-02 21:39:00,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:39:00,132 INFO L225 Difference]: With dead ends: 335 [2024-11-02 21:39:00,132 INFO L226 Difference]: Without dead ends: 266 [2024-11-02 21:39:00,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-02 21:39:00,134 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 268 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-02 21:39:00,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 524 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-02 21:39:00,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-02 21:39:00,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 137. [2024-11-02 21:39:00,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 106 states have (on average 1.4150943396226414) internal successors, (150), 107 states have internal predecessors, (150), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-02 21:39:00,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 206 transitions. [2024-11-02 21:39:00,163 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 206 transitions. Word has length 140 [2024-11-02 21:39:00,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:39:00,163 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 206 transitions. [2024-11-02 21:39:00,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-11-02 21:39:00,164 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 206 transitions. [2024-11-02 21:39:00,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-02 21:39:00,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:39:00,167 INFO L215 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, 1, 1, 1, 1, 1] [2024-11-02 21:39:00,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-02 21:39:00,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:39:00,368 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:39:00,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:39:00,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1894683543, now seen corresponding path program 1 times [2024-11-02 21:39:00,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:39:00,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464696202] [2024-11-02 21:39:00,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:39:00,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:39:00,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:39:00,371 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:39:00,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 21:39:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:39:00,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 21:39:00,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:39:00,596 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-02 21:39:00,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:39:00,703 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-02 21:39:00,704 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:39:00,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464696202] [2024-11-02 21:39:00,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [464696202] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:39:00,704 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:39:00,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2024-11-02 21:39:00,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404045271] [2024-11-02 21:39:00,705 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:39:00,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 21:39:00,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:39:00,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 21:39:00,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 21:39:00,708 INFO L87 Difference]: Start difference. First operand 137 states and 206 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2024-11-02 21:39:01,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:39:01,248 INFO L93 Difference]: Finished difference Result 375 states and 557 transitions. [2024-11-02 21:39:01,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 21:39:01,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 140 [2024-11-02 21:39:01,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:39:01,252 INFO L225 Difference]: With dead ends: 375 [2024-11-02 21:39:01,252 INFO L226 Difference]: Without dead ends: 241 [2024-11-02 21:39:01,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-02 21:39:01,254 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 194 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 21:39:01,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 394 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 21:39:01,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-02 21:39:01,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 131. [2024-11-02 21:39:01,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 100 states have (on average 1.38) internal successors, (138), 101 states have internal predecessors, (138), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-02 21:39:01,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 194 transitions. [2024-11-02 21:39:01,272 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 194 transitions. Word has length 140 [2024-11-02 21:39:01,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:39:01,272 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 194 transitions. [2024-11-02 21:39:01,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2024-11-02 21:39:01,273 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 194 transitions. [2024-11-02 21:39:01,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-02 21:39:01,278 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:39:01,278 INFO L215 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, 1, 1, 1, 1, 1] [2024-11-02 21:39:01,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-02 21:39:01,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:39:01,479 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:39:01,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:39:01,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1048564375, now seen corresponding path program 1 times [2024-11-02 21:39:01,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:39:01,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394063708] [2024-11-02 21:39:01,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:39:01,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:39:01,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:39:01,482 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:39:01,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 21:39:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:39:01,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-02 21:39:01,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:39:02,788 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 382 proven. 81 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-11-02 21:39:02,788 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:39:07,494 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 27 proven. 84 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2024-11-02 21:39:07,494 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:39:07,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394063708] [2024-11-02 21:39:07,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [394063708] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:39:07,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:39:07,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2024-11-02 21:39:07,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486299395] [2024-11-02 21:39:07,495 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:39:07,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-02 21:39:07,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:39:07,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-02 21:39:07,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2024-11-02 21:39:07,497 INFO L87 Difference]: Start difference. First operand 131 states and 194 transitions. Second operand has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 6 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (40), 4 states have call predecessors, (40), 6 states have call successors, (40) [2024-11-02 21:40:10,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:40:10,211 INFO L93 Difference]: Finished difference Result 646 states and 935 transitions. [2024-11-02 21:40:10,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-02 21:40:10,232 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 6 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (40), 4 states have call predecessors, (40), 6 states have call successors, (40) Word has length 140 [2024-11-02 21:40:10,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:40:10,235 INFO L225 Difference]: With dead ends: 646 [2024-11-02 21:40:10,235 INFO L226 Difference]: Without dead ends: 518 [2024-11-02 21:40:10,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 267 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=603, Invalid=1119, Unknown=0, NotChecked=0, Total=1722 [2024-11-02 21:40:10,240 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 640 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.5s IncrementalHoareTripleChecker+Time [2024-11-02 21:40:10,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 656 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 43.5s Time] [2024-11-02 21:40:10,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2024-11-02 21:40:10,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 320. [2024-11-02 21:40:10,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 232 states have (on average 1.3275862068965518) internal successors, (308), 234 states have internal predecessors, (308), 76 states have call successors, (76), 11 states have call predecessors, (76), 11 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-02 21:40:10,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 460 transitions. [2024-11-02 21:40:10,285 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 460 transitions. Word has length 140 [2024-11-02 21:40:10,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:40:10,285 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 460 transitions. [2024-11-02 21:40:10,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 6 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (40), 4 states have call predecessors, (40), 6 states have call successors, (40) [2024-11-02 21:40:10,286 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 460 transitions. [2024-11-02 21:40:10,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-02 21:40:10,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:40:10,287 INFO L215 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, 1, 1, 1, 1, 1] [2024-11-02 21:40:10,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-02 21:40:10,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:40:10,488 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:40:10,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:40:10,489 INFO L85 PathProgramCache]: Analyzing trace with hash 924292043, now seen corresponding path program 1 times [2024-11-02 21:40:10,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:40:10,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374996976] [2024-11-02 21:40:10,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:40:10,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:40:10,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:40:10,490 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:40:10,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 21:40:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:40:10,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 21:40:10,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:40:10,783 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-02 21:40:10,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:40:11,448 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-02 21:40:11,448 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:40:11,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374996976] [2024-11-02 21:40:11,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [374996976] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:40:11,449 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:40:11,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 21:40:11,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649493691] [2024-11-02 21:40:11,449 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:40:11,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 21:40:11,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:40:11,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 21:40:11,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 21:40:11,450 INFO L87 Difference]: Start difference. First operand 320 states and 460 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-11-02 21:40:11,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:40:11,947 INFO L93 Difference]: Finished difference Result 714 states and 1022 transitions. [2024-11-02 21:40:11,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 21:40:11,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 140 [2024-11-02 21:40:11,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:40:11,950 INFO L225 Difference]: With dead ends: 714 [2024-11-02 21:40:11,950 INFO L226 Difference]: Without dead ends: 502 [2024-11-02 21:40:11,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 21:40:11,951 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 47 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 21:40:11,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 234 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 21:40:11,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2024-11-02 21:40:12,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 496. [2024-11-02 21:40:12,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 378 states have (on average 1.3386243386243386) internal successors, (506), 384 states have internal predecessors, (506), 100 states have call successors, (100), 17 states have call predecessors, (100), 17 states have return successors, (100), 94 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-02 21:40:12,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 706 transitions. [2024-11-02 21:40:12,006 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 706 transitions. Word has length 140 [2024-11-02 21:40:12,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:40:12,007 INFO L471 AbstractCegarLoop]: Abstraction has 496 states and 706 transitions. [2024-11-02 21:40:12,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-11-02 21:40:12,008 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 706 transitions. [2024-11-02 21:40:12,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-02 21:40:12,009 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:40:12,009 INFO L215 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, 1, 1, 1, 1, 1, 1] [2024-11-02 21:40:12,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-02 21:40:12,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:40:12,210 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:40:12,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:40:12,211 INFO L85 PathProgramCache]: Analyzing trace with hash 110609269, now seen corresponding path program 1 times [2024-11-02 21:40:12,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:40:12,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710286768] [2024-11-02 21:40:12,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:40:12,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:40:12,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:40:12,212 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:40:12,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-02 21:40:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:40:12,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 21:40:12,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:40:13,286 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 397 proven. 30 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-11-02 21:40:13,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:40:14,410 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 27 proven. 30 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-02 21:40:14,411 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:40:14,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710286768] [2024-11-02 21:40:14,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [710286768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:40:14,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:40:14,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2024-11-02 21:40:14,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824301298] [2024-11-02 21:40:14,411 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:40:14,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 21:40:14,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:40:14,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 21:40:14,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-02 21:40:14,413 INFO L87 Difference]: Start difference. First operand 496 states and 706 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-02 21:40:15,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:40:15,898 INFO L93 Difference]: Finished difference Result 789 states and 1106 transitions. [2024-11-02 21:40:15,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-02 21:40:15,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 141 [2024-11-02 21:40:15,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:40:15,903 INFO L225 Difference]: With dead ends: 789 [2024-11-02 21:40:15,903 INFO L226 Difference]: Without dead ends: 368 [2024-11-02 21:40:15,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 274 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-02 21:40:15,905 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 57 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-02 21:40:15,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 185 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-02 21:40:15,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-11-02 21:40:15,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 344. [2024-11-02 21:40:15,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 255 states have (on average 1.2823529411764707) internal successors, (327), 257 states have internal predecessors, (327), 72 states have call successors, (72), 16 states have call predecessors, (72), 16 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-02 21:40:15,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 471 transitions. [2024-11-02 21:40:15,949 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 471 transitions. Word has length 141 [2024-11-02 21:40:15,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:40:15,950 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 471 transitions. [2024-11-02 21:40:15,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-02 21:40:15,950 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 471 transitions. [2024-11-02 21:40:15,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-02 21:40:15,952 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:40:15,952 INFO L215 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, 1, 1, 1, 1, 1, 1] [2024-11-02 21:40:15,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-02 21:40:16,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:40:16,153 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:40:16,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:40:16,154 INFO L85 PathProgramCache]: Analyzing trace with hash 563701427, now seen corresponding path program 1 times [2024-11-02 21:40:16,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:40:16,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567656840] [2024-11-02 21:40:16,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:40:16,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:40:16,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:40:16,156 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:40:16,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-02 21:40:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:40:16,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 21:40:16,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:40:16,710 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-02 21:40:16,710 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:40:17,454 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-02 21:40:17,454 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:40:17,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567656840] [2024-11-02 21:40:17,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1567656840] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:40:17,454 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:40:17,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2024-11-02 21:40:17,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279748826] [2024-11-02 21:40:17,455 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:40:17,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 21:40:17,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:40:17,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 21:40:17,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-02 21:40:17,456 INFO L87 Difference]: Start difference. First operand 344 states and 471 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-11-02 21:40:18,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:40:18,347 INFO L93 Difference]: Finished difference Result 774 states and 1062 transitions. [2024-11-02 21:40:18,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 21:40:18,350 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 141 [2024-11-02 21:40:18,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:40:18,353 INFO L225 Difference]: With dead ends: 774 [2024-11-02 21:40:18,353 INFO L226 Difference]: Without dead ends: 544 [2024-11-02 21:40:18,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-02 21:40:18,354 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 133 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-02 21:40:18,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 420 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-02 21:40:18,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2024-11-02 21:40:18,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 344. [2024-11-02 21:40:18,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 255 states have (on average 1.2823529411764707) internal successors, (327), 257 states have internal predecessors, (327), 72 states have call successors, (72), 16 states have call predecessors, (72), 16 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-02 21:40:18,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 471 transitions. [2024-11-02 21:40:18,411 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 471 transitions. Word has length 141 [2024-11-02 21:40:18,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:40:18,411 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 471 transitions. [2024-11-02 21:40:18,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-11-02 21:40:18,411 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 471 transitions. [2024-11-02 21:40:18,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-02 21:40:18,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:40:18,412 INFO L215 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, 1, 1, 1, 1, 1, 1] [2024-11-02 21:40:18,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-02 21:40:18,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:40:18,613 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:40:18,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:40:18,614 INFO L85 PathProgramCache]: Analyzing trace with hash 170674417, now seen corresponding path program 1 times [2024-11-02 21:40:18,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:40:18,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892154716] [2024-11-02 21:40:18,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:40:18,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:40:18,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:40:18,615 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:40:18,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-02 21:40:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:40:18,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 21:40:18,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:40:18,976 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-02 21:40:18,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:40:19,538 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-02 21:40:19,538 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:40:19,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892154716] [2024-11-02 21:40:19,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1892154716] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:40:19,539 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:40:19,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2024-11-02 21:40:19,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373370352] [2024-11-02 21:40:19,539 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:40:19,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 21:40:19,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:40:19,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 21:40:19,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 21:40:19,540 INFO L87 Difference]: Start difference. First operand 344 states and 471 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-11-02 21:40:20,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:40:20,578 INFO L93 Difference]: Finished difference Result 701 states and 960 transitions. [2024-11-02 21:40:20,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 21:40:20,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 141 [2024-11-02 21:40:20,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:40:20,583 INFO L225 Difference]: With dead ends: 701 [2024-11-02 21:40:20,583 INFO L226 Difference]: Without dead ends: 460 [2024-11-02 21:40:20,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-02 21:40:20,586 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 103 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-02 21:40:20,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 302 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-02 21:40:20,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2024-11-02 21:40:20,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 344. [2024-11-02 21:40:20,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 255 states have (on average 1.2745098039215685) internal successors, (325), 257 states have internal predecessors, (325), 72 states have call successors, (72), 16 states have call predecessors, (72), 16 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-02 21:40:20,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 469 transitions. [2024-11-02 21:40:20,618 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 469 transitions. Word has length 141 [2024-11-02 21:40:20,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:40:20,619 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 469 transitions. [2024-11-02 21:40:20,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-11-02 21:40:20,619 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 469 transitions. [2024-11-02 21:40:20,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-02 21:40:20,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:40:20,620 INFO L215 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, 1, 1, 1, 1, 1, 1] [2024-11-02 21:40:20,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-02 21:40:20,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:40:20,821 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:40:20,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:40:20,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1518269325, now seen corresponding path program 1 times [2024-11-02 21:40:20,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:40:20,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714324841] [2024-11-02 21:40:20,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:40:20,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:40:20,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:40:20,823 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:40:20,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-02 21:40:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:40:20,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-02 21:40:20,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:40:29,736 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 449 proven. 144 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2024-11-02 21:40:29,736 INFO L311 TraceCheckSpWp]: Computing backward predicates...