/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_amount25_file-39.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-02 22:05:26,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 22:05:26,845 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 22:05:26,849 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 22:05:26,850 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 22:05:26,885 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 22:05:26,886 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 22:05:26,886 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 22:05:26,887 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-02 22:05:26,888 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-02 22:05:26,889 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 22:05:26,889 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 22:05:26,890 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 22:05:26,890 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 22:05:26,890 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 22:05:26,891 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 22:05:26,891 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 22:05:26,892 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 22:05:26,892 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 22:05:26,892 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 22:05:26,893 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 22:05:26,893 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 22:05:26,893 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 22:05:26,894 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 22:05:26,894 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 22:05:26,894 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 22:05:26,895 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 22:05:26,895 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 22:05:26,895 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 22:05:26,896 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 22:05:26,896 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 22:05:26,898 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 22:05:26,898 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 22:05:26,899 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 22:05:26,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 22:05:26,899 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 22:05:26,900 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 22:05:26,900 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 22:05:26,900 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-02 22:05:26,900 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 22:05:26,901 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 22:05:26,902 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-02 22:05:26,902 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-02 22:05:26,902 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 22:05:26,902 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:05:27,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 22:05:27,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 22:05:27,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 22:05:27,163 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 22:05:27,163 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 22:05:27,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-39.i [2024-11-02 22:05:28,583 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 22:05:28,754 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 22:05:28,755 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-39.i [2024-11-02 22:05:28,761 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8453f1b33/d90e2b38508f4ac986dd4290f1828606/FLAG91ca49d68 [2024-11-02 22:05:28,773 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8453f1b33/d90e2b38508f4ac986dd4290f1828606 [2024-11-02 22:05:28,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 22:05:28,776 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-02 22:05:28,777 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 22:05:28,777 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 22:05:28,782 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 22:05:28,783 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:05:28" (1/1) ... [2024-11-02 22:05:28,784 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63493172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:28, skipping insertion in model container [2024-11-02 22:05:28,784 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:05:28" (1/1) ... [2024-11-02 22:05:28,810 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 22:05:28,946 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_amount25_file-39.i[915,928] [2024-11-02 22:05:29,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 22:05:29,013 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 22:05:29,024 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_amount25_file-39.i[915,928] [2024-11-02 22:05:29,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 22:05:29,061 INFO L204 MainTranslator]: Completed translation [2024-11-02 22:05:29,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:29 WrapperNode [2024-11-02 22:05:29,061 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 22:05:29,062 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 22:05:29,062 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 22:05:29,063 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 22:05:29,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:29" (1/1) ... [2024-11-02 22:05:29,076 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:29" (1/1) ... [2024-11-02 22:05:29,096 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 100 [2024-11-02 22:05:29,097 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 22:05:29,097 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 22:05:29,097 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 22:05:29,098 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 22:05:29,108 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:29" (1/1) ... [2024-11-02 22:05:29,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:29" (1/1) ... [2024-11-02 22:05:29,111 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:29" (1/1) ... [2024-11-02 22:05:29,122 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 22:05:29,122 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:29" (1/1) ... [2024-11-02 22:05:29,122 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:29" (1/1) ... [2024-11-02 22:05:29,130 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:29" (1/1) ... [2024-11-02 22:05:29,133 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:29" (1/1) ... [2024-11-02 22:05:29,135 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:29" (1/1) ... [2024-11-02 22:05:29,137 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:29" (1/1) ... [2024-11-02 22:05:29,139 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 22:05:29,140 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 22:05:29,140 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 22:05:29,140 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 22:05:29,145 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:29" (1/1) ... [2024-11-02 22:05:29,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 22:05:29,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:05:29,181 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 22:05:29,187 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 22:05:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 22:05:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-02 22:05:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 22:05:29,214 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 22:05:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 22:05:29,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 22:05:29,284 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 22:05:29,286 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 22:05:29,572 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-02 22:05:29,572 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 22:05:29,582 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 22:05:29,583 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 22:05:29,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:05:29 BoogieIcfgContainer [2024-11-02 22:05:29,583 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 22:05:29,585 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 22:05:29,585 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 22:05:29,588 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 22:05:29,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:05:28" (1/3) ... [2024-11-02 22:05:29,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e508492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:05:29, skipping insertion in model container [2024-11-02 22:05:29,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:29" (2/3) ... [2024-11-02 22:05:29,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e508492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:05:29, skipping insertion in model container [2024-11-02 22:05:29,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:05:29" (3/3) ... [2024-11-02 22:05:29,592 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-39.i [2024-11-02 22:05:29,612 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 22:05:29,613 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 22:05:29,678 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 22:05:29,683 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;@7eef2786, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 22:05:29,683 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 22:05:29,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 32 states have internal predecessors, (41), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-02 22:05:29,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-02 22:05:29,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:05:29,697 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:29,697 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:05:29,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:05:29,702 INFO L85 PathProgramCache]: Analyzing trace with hash 705531536, now seen corresponding path program 1 times [2024-11-02 22:05:29,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:05:29,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964675064] [2024-11-02 22:05:29,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:05:29,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:05:29,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:05:29,717 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 22:05:29,719 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 22:05:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:05:29,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 22:05:29,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:05:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-02 22:05:30,203 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:05:30,419 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-02 22:05:30,420 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:05:30,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964675064] [2024-11-02 22:05:30,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [964675064] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:05:30,421 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:05:30,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2024-11-02 22:05:30,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574777408] [2024-11-02 22:05:30,423 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:05:30,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 22:05:30,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:05:30,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 22:05:30,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-02 22:05:30,458 INFO L87 Difference]: Start difference. First operand has 47 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 32 states have internal predecessors, (41), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-02 22:05:30,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:05:30,973 INFO L93 Difference]: Finished difference Result 195 states and 345 transitions. [2024-11-02 22:05:30,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 22:05:30,977 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 87 [2024-11-02 22:05:30,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:05:30,985 INFO L225 Difference]: With dead ends: 195 [2024-11-02 22:05:30,986 INFO L226 Difference]: Without dead ends: 151 [2024-11-02 22:05:30,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-02 22:05:30,991 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 151 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 22:05:30,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 302 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 22:05:31,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-02 22:05:31,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 81. [2024-11-02 22:05:31,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 52 states have internal predecessors, (63), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-02 22:05:31,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 115 transitions. [2024-11-02 22:05:31,044 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 115 transitions. Word has length 87 [2024-11-02 22:05:31,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:05:31,045 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 115 transitions. [2024-11-02 22:05:31,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-02 22:05:31,045 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 115 transitions. [2024-11-02 22:05:31,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-02 22:05:31,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:05:31,048 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:31,068 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 22:05:31,249 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 22:05:31,250 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:05:31,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:05:31,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1626825182, now seen corresponding path program 1 times [2024-11-02 22:05:31,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:05:31,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972160008] [2024-11-02 22:05:31,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:05:31,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:05:31,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:05:31,253 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 22:05:31,256 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 22:05:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:05:31,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-02 22:05:31,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:05:33,147 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 152 proven. 24 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-02 22:05:33,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:05:35,856 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-02 22:05:35,857 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:05:35,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972160008] [2024-11-02 22:05:35,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [972160008] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 22:05:35,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 22:05:35,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 21 [2024-11-02 22:05:35,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573494108] [2024-11-02 22:05:35,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 22:05:35,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 22:05:35,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:05:35,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 22:05:35,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2024-11-02 22:05:35,860 INFO L87 Difference]: Start difference. First operand 81 states and 115 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-02 22:05:36,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:05:36,665 INFO L93 Difference]: Finished difference Result 116 states and 157 transitions. [2024-11-02 22:05:36,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 22:05:36,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 88 [2024-11-02 22:05:36,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:05:36,669 INFO L225 Difference]: With dead ends: 116 [2024-11-02 22:05:36,669 INFO L226 Difference]: Without dead ends: 114 [2024-11-02 22:05:36,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2024-11-02 22:05:36,671 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 17 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 22:05:36,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 271 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 22:05:36,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-02 22:05:36,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 97. [2024-11-02 22:05:36,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 68 states have internal predecessors, (84), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-02 22:05:36,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2024-11-02 22:05:36,695 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 88 [2024-11-02 22:05:36,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:05:36,696 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2024-11-02 22:05:36,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-02 22:05:36,696 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2024-11-02 22:05:36,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-02 22:05:36,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:05:36,701 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:36,722 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 22:05:36,902 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 22:05:36,903 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:05:36,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:05:36,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1628672224, now seen corresponding path program 1 times [2024-11-02 22:05:36,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:05:36,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360044846] [2024-11-02 22:05:36,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:05:36,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:05:36,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:05:36,906 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 22:05:36,907 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 22:05:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:05:37,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-02 22:05:37,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:05:38,543 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-02 22:05:38,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:05:39,398 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-02 22:05:39,398 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:05:39,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360044846] [2024-11-02 22:05:39,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1360044846] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 22:05:39,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 22:05:39,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 19 [2024-11-02 22:05:39,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65141773] [2024-11-02 22:05:39,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 22:05:39,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-02 22:05:39,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:05:39,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-02 22:05:39,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-11-02 22:05:39,401 INFO L87 Difference]: Start difference. First operand 97 states and 136 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-02 22:05:39,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:05:39,938 INFO L93 Difference]: Finished difference Result 114 states and 154 transitions. [2024-11-02 22:05:39,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-02 22:05:39,939 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 88 [2024-11-02 22:05:39,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:05:39,940 INFO L225 Difference]: With dead ends: 114 [2024-11-02 22:05:39,941 INFO L226 Difference]: Without dead ends: 112 [2024-11-02 22:05:39,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2024-11-02 22:05:39,942 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 24 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 22:05:39,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 279 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 22:05:39,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-02 22:05:39,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 97. [2024-11-02 22:05:39,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 68 states have internal predecessors, (84), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-02 22:05:39,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2024-11-02 22:05:39,954 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 88 [2024-11-02 22:05:39,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:05:39,954 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2024-11-02 22:05:39,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-02 22:05:39,955 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2024-11-02 22:05:39,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-02 22:05:39,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:05:39,956 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:39,977 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 22:05:40,157 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 22:05:40,157 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:05:40,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:05:40,158 INFO L85 PathProgramCache]: Analyzing trace with hash -2119667321, now seen corresponding path program 1 times [2024-11-02 22:05:40,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:05:40,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155320577] [2024-11-02 22:05:40,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:05:40,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:05:40,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:05:40,160 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 22:05:40,162 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 22:05:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:05:40,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 22:05:40,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:05:40,300 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-02 22:05:40,300 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:05:40,369 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-02 22:05:40,370 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:05:40,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155320577] [2024-11-02 22:05:40,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [155320577] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:05:40,370 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:05:40,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 4 [2024-11-02 22:05:40,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193043687] [2024-11-02 22:05:40,371 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:05:40,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 22:05:40,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:05:40,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 22:05:40,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:05:40,373 INFO L87 Difference]: Start difference. First operand 97 states and 136 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-02 22:05:40,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:05:40,466 INFO L93 Difference]: Finished difference Result 232 states and 325 transitions. [2024-11-02 22:05:40,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 22:05:40,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 88 [2024-11-02 22:05:40,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:05:40,468 INFO L225 Difference]: With dead ends: 232 [2024-11-02 22:05:40,469 INFO L226 Difference]: Without dead ends: 138 [2024-11-02 22:05:40,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 22:05:40,470 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 46 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 22:05:40,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 169 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 22:05:40,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-02 22:05:40,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2024-11-02 22:05:40,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 91 states have (on average 1.1978021978021978) internal successors, (109), 91 states have internal predecessors, (109), 39 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-02 22:05:40,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 187 transitions. [2024-11-02 22:05:40,488 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 187 transitions. Word has length 88 [2024-11-02 22:05:40,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:05:40,489 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 187 transitions. [2024-11-02 22:05:40,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-02 22:05:40,489 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 187 transitions. [2024-11-02 22:05:40,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-02 22:05:40,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:05:40,492 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:05:40,508 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 22:05:40,692 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 22:05:40,693 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:05:40,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:05:40,694 INFO L85 PathProgramCache]: Analyzing trace with hash -755537303, now seen corresponding path program 1 times [2024-11-02 22:05:40,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:05:40,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286336170] [2024-11-02 22:05:40,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:05:40,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:05:40,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:05:40,696 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 22:05:40,697 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 22:05:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:05:40,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-02 22:05:40,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:05:41,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 833 proven. 65 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2024-11-02 22:05:41,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:05:43,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2024-11-02 22:05:43,009 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:05:43,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286336170] [2024-11-02 22:05:43,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [286336170] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 22:05:43,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 22:05:43,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19] total 25 [2024-11-02 22:05:43,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278281235] [2024-11-02 22:05:43,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 22:05:43,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 22:05:43,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:05:43,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 22:05:43,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2024-11-02 22:05:43,011 INFO L87 Difference]: Start difference. First operand 134 states and 187 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-02 22:05:43,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:05:43,492 INFO L93 Difference]: Finished difference Result 181 states and 240 transitions. [2024-11-02 22:05:43,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-02 22:05:43,493 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 173 [2024-11-02 22:05:43,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:05:43,495 INFO L225 Difference]: With dead ends: 181 [2024-11-02 22:05:43,495 INFO L226 Difference]: Without dead ends: 179 [2024-11-02 22:05:43,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2024-11-02 22:05:43,496 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 55 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 22:05:43,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 260 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 22:05:43,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-02 22:05:43,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 138. [2024-11-02 22:05:43,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 95 states have (on average 1.2105263157894737) internal successors, (115), 95 states have internal predecessors, (115), 39 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-02 22:05:43,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 193 transitions. [2024-11-02 22:05:43,518 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 193 transitions. Word has length 173 [2024-11-02 22:05:43,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:05:43,519 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 193 transitions. [2024-11-02 22:05:43,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-02 22:05:43,519 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 193 transitions. [2024-11-02 22:05:43,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-02 22:05:43,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:05:43,525 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:05:43,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-02 22:05:43,725 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 22:05:43,726 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:05:43,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:05:43,727 INFO L85 PathProgramCache]: Analyzing trace with hash -753690261, now seen corresponding path program 1 times [2024-11-02 22:05:43,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:05:43,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389458732] [2024-11-02 22:05:43,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:05:43,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:05:43,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:05:43,728 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 22:05:43,730 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 22:05:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:05:43,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-02 22:05:43,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:05:46,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 25 proven. 57 refuted. 0 times theorem prover too weak. 1249 trivial. 0 not checked. [2024-11-02 22:05:46,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:05:46,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2024-11-02 22:05:46,743 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:05:46,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389458732] [2024-11-02 22:05:46,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [389458732] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 22:05:46,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 22:05:46,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2024-11-02 22:05:46,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594448842] [2024-11-02 22:05:46,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 22:05:46,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-02 22:05:46,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:05:46,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-02 22:05:46,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-02 22:05:46,746 INFO L87 Difference]: Start difference. First operand 138 states and 193 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-02 22:05:47,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:05:47,968 INFO L93 Difference]: Finished difference Result 289 states and 390 transitions. [2024-11-02 22:05:47,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-02 22:05:47,971 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 173 [2024-11-02 22:05:47,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:05:47,973 INFO L225 Difference]: With dead ends: 289 [2024-11-02 22:05:47,974 INFO L226 Difference]: Without dead ends: 287 [2024-11-02 22:05:47,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2024-11-02 22:05:47,975 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 152 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-02 22:05:47,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 467 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-02 22:05:47,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-02 22:05:48,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 198. [2024-11-02 22:05:48,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 135 states have (on average 1.1703703703703703) internal successors, (158), 137 states have internal predecessors, (158), 55 states have call successors, (55), 7 states have call predecessors, (55), 7 states have return successors, (55), 53 states have call predecessors, (55), 55 states have call successors, (55) [2024-11-02 22:05:48,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 268 transitions. [2024-11-02 22:05:48,010 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 268 transitions. Word has length 173 [2024-11-02 22:05:48,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:05:48,011 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 268 transitions. [2024-11-02 22:05:48,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-02 22:05:48,011 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 268 transitions. [2024-11-02 22:05:48,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-02 22:05:48,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:05:48,015 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:05:48,033 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 22:05:48,215 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 22:05:48,216 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:05:48,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:05:48,216 INFO L85 PathProgramCache]: Analyzing trace with hash -716635867, now seen corresponding path program 1 times [2024-11-02 22:05:48,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:05:48,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133912526] [2024-11-02 22:05:48,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:05:48,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:05:48,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:05:48,218 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 22:05:48,218 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 22:05:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:05:48,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-02 22:05:48,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:05:49,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 834 proven. 65 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2024-11-02 22:05:49,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:05:50,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2024-11-02 22:05:50,493 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:05:50,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133912526] [2024-11-02 22:05:50,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2133912526] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 22:05:50,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 22:05:50,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [20] total 27 [2024-11-02 22:05:50,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456988036] [2024-11-02 22:05:50,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 22:05:50,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-02 22:05:50,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:05:50,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-02 22:05:50,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2024-11-02 22:05:50,494 INFO L87 Difference]: Start difference. First operand 198 states and 268 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-02 22:05:51,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:05:51,106 INFO L93 Difference]: Finished difference Result 235 states and 306 transitions. [2024-11-02 22:05:51,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-02 22:05:51,107 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 174 [2024-11-02 22:05:51,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:05:51,110 INFO L225 Difference]: With dead ends: 235 [2024-11-02 22:05:51,110 INFO L226 Difference]: Without dead ends: 233 [2024-11-02 22:05:51,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2024-11-02 22:05:51,112 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 43 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 22:05:51,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 296 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 22:05:51,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-02 22:05:51,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 201. [2024-11-02 22:05:51,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 138 states have (on average 1.181159420289855) internal successors, (163), 140 states have internal predecessors, (163), 55 states have call successors, (55), 7 states have call predecessors, (55), 7 states have return successors, (55), 53 states have call predecessors, (55), 55 states have call successors, (55) [2024-11-02 22:05:51,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 273 transitions. [2024-11-02 22:05:51,154 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 273 transitions. Word has length 174 [2024-11-02 22:05:51,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:05:51,155 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 273 transitions. [2024-11-02 22:05:51,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-02 22:05:51,155 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 273 transitions. [2024-11-02 22:05:51,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-02 22:05:51,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:05:51,157 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:05:51,179 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 22:05:51,357 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 22:05:51,358 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:05:51,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:05:51,358 INFO L85 PathProgramCache]: Analyzing trace with hash -714788825, now seen corresponding path program 1 times [2024-11-02 22:05:51,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:05:51,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111198632] [2024-11-02 22:05:51,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:05:51,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:05:51,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:05:51,362 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 22:05:51,363 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 22:05:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:05:51,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-02 22:05:51,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:05:53,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 26 proven. 57 refuted. 0 times theorem prover too weak. 1249 trivial. 0 not checked. [2024-11-02 22:05:53,796 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:05:54,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2024-11-02 22:05:54,381 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:05:54,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111198632] [2024-11-02 22:05:54,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1111198632] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 22:05:54,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 22:05:54,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 19 [2024-11-02 22:05:54,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854718340] [2024-11-02 22:05:54,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 22:05:54,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-02 22:05:54,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:05:54,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-02 22:05:54,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2024-11-02 22:05:54,383 INFO L87 Difference]: Start difference. First operand 201 states and 273 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-02 22:05:55,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:05:55,234 INFO L93 Difference]: Finished difference Result 285 states and 379 transitions. [2024-11-02 22:05:55,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-02 22:05:55,235 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 174 [2024-11-02 22:05:55,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:05:55,237 INFO L225 Difference]: With dead ends: 285 [2024-11-02 22:05:55,237 INFO L226 Difference]: Without dead ends: 283 [2024-11-02 22:05:55,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 329 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2024-11-02 22:05:55,238 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 161 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-02 22:05:55,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 654 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-02 22:05:55,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-02 22:05:55,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 169. [2024-11-02 22:05:55,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 117 states have (on average 1.1794871794871795) internal successors, (138), 118 states have internal predecessors, (138), 44 states have call successors, (44), 7 states have call predecessors, (44), 7 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-02 22:05:55,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 226 transitions. [2024-11-02 22:05:55,265 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 226 transitions. Word has length 174 [2024-11-02 22:05:55,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:05:55,265 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 226 transitions. [2024-11-02 22:05:55,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-02 22:05:55,266 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 226 transitions. [2024-11-02 22:05:55,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-02 22:05:55,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:05:55,268 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:05:55,291 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 22:05:55,468 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 22:05:55,469 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:05:55,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:05:55,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1109662877, now seen corresponding path program 1 times [2024-11-02 22:05:55,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:05:55,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092625795] [2024-11-02 22:05:55,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:05:55,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:05:55,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:05:55,471 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 22:05:55,472 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 22:05:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:05:55,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-02 22:05:55,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:05:57,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 848 proven. 113 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2024-11-02 22:05:57,277 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:05:59,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2024-11-02 22:05:59,296 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:05:59,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092625795] [2024-11-02 22:05:59,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1092625795] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 22:05:59,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 22:05:59,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [27] total 35 [2024-11-02 22:05:59,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862843324] [2024-11-02 22:05:59,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 22:05:59,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-02 22:05:59,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:05:59,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-02 22:05:59,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=981, Unknown=0, NotChecked=0, Total=1190 [2024-11-02 22:05:59,298 INFO L87 Difference]: Start difference. First operand 169 states and 226 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-02 22:06:00,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:06:00,084 INFO L93 Difference]: Finished difference Result 193 states and 251 transitions. [2024-11-02 22:06:00,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-02 22:06:00,084 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 174 [2024-11-02 22:06:00,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:06:00,086 INFO L225 Difference]: With dead ends: 193 [2024-11-02 22:06:00,086 INFO L226 Difference]: Without dead ends: 191 [2024-11-02 22:06:00,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 312 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=225, Invalid=1107, Unknown=0, NotChecked=0, Total=1332 [2024-11-02 22:06:00,087 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 35 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 22:06:00,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 225 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 22:06:00,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-02 22:06:00,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 169. [2024-11-02 22:06:00,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 117 states have (on average 1.1794871794871795) internal successors, (138), 118 states have internal predecessors, (138), 44 states have call successors, (44), 7 states have call predecessors, (44), 7 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-02 22:06:00,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 226 transitions. [2024-11-02 22:06:00,110 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 226 transitions. Word has length 174 [2024-11-02 22:06:00,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:06:00,111 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 226 transitions. [2024-11-02 22:06:00,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-02 22:06:00,111 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 226 transitions. [2024-11-02 22:06:00,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-02 22:06:00,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:06:00,112 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:06:00,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-02 22:06:00,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:06:00,313 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:06:00,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:06:00,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1107815835, now seen corresponding path program 1 times [2024-11-02 22:06:00,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:06:00,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044396942] [2024-11-02 22:06:00,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:06:00,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:06:00,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:06:00,315 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:06:00,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-02 22:06:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:06:00,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-02 22:06:00,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:06:02,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 717 proven. 119 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-02 22:06:02,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:06:03,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2024-11-02 22:06:03,079 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:06:03,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044396942] [2024-11-02 22:06:03,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2044396942] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 22:06:03,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 22:06:03,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [20] total 29 [2024-11-02 22:06:03,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984893665] [2024-11-02 22:06:03,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 22:06:03,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-02 22:06:03,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:06:03,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-02 22:06:03,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2024-11-02 22:06:03,081 INFO L87 Difference]: Start difference. First operand 169 states and 226 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-02 22:06:03,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:06:03,917 INFO L93 Difference]: Finished difference Result 184 states and 241 transitions. [2024-11-02 22:06:03,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-02 22:06:03,918 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 174 [2024-11-02 22:06:03,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:06:03,919 INFO L225 Difference]: With dead ends: 184 [2024-11-02 22:06:03,919 INFO L226 Difference]: Without dead ends: 0 [2024-11-02 22:06:03,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=180, Invalid=812, Unknown=0, NotChecked=0, Total=992 [2024-11-02 22:06:03,920 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 31 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-02 22:06:03,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 276 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-02 22:06:03,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-02 22:06:03,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-02 22:06:03,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:06:03,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-02 22:06:03,921 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 174 [2024-11-02 22:06:03,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:06:03,921 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-02 22:06:03,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-02 22:06:03,921 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-02 22:06:03,921 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-02 22:06:03,924 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-02 22:06:03,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-02 22:06:04,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:06:04,127 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:06:04,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-02 22:06:05,827 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 22:06:05,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 10:06:05 BoogieIcfgContainer [2024-11-02 22:06:05,844 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 22:06:05,845 INFO L158 Benchmark]: Toolchain (without parser) took 37068.61ms. Allocated memory was 197.1MB in the beginning and 714.1MB in the end (delta: 516.9MB). Free memory was 153.2MB in the beginning and 426.7MB in the end (delta: -273.6MB). Peak memory consumption was 413.8MB. Max. memory is 8.0GB. [2024-11-02 22:06:05,845 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 197.1MB. Free memory was 155.4MB in the beginning and 155.3MB in the end (delta: 71.7kB). There was no memory consumed. Max. memory is 8.0GB. [2024-11-02 22:06:05,845 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.53ms. Allocated memory is still 197.1MB. Free memory was 152.8MB in the beginning and 138.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2024-11-02 22:06:05,846 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.38ms. Allocated memory is still 197.1MB. Free memory was 138.1MB in the beginning and 136.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-02 22:06:05,846 INFO L158 Benchmark]: Boogie Preprocessor took 42.08ms. Allocated memory is still 197.1MB. Free memory was 136.1MB in the beginning and 133.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-02 22:06:05,846 INFO L158 Benchmark]: RCFGBuilder took 442.98ms. Allocated memory is still 197.1MB. Free memory was 133.3MB in the beginning and 118.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2024-11-02 22:06:05,846 INFO L158 Benchmark]: TraceAbstraction took 36258.79ms. Allocated memory was 197.1MB in the beginning and 714.1MB in the end (delta: 516.9MB). Free memory was 117.9MB in the beginning and 426.7MB in the end (delta: -308.8MB). Peak memory consumption was 378.1MB. Max. memory is 8.0GB. [2024-11-02 22:06:05,847 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 197.1MB. Free memory was 155.4MB in the beginning and 155.3MB in the end (delta: 71.7kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 284.53ms. Allocated memory is still 197.1MB. Free memory was 152.8MB in the beginning and 138.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.38ms. Allocated memory is still 197.1MB. Free memory was 138.1MB in the beginning and 136.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.08ms. Allocated memory is still 197.1MB. Free memory was 136.1MB in the beginning and 133.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 442.98ms. Allocated memory is still 197.1MB. Free memory was 133.3MB in the beginning and 118.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 36258.79ms. Allocated memory was 197.1MB in the beginning and 714.1MB in the end (delta: 516.9MB). Free memory was 117.9MB in the beginning and 426.7MB in the end (delta: -308.8MB). Peak memory consumption was 378.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 34.5s, OverallIterations: 10, TraceHistogramMax: 26, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 715 SdHoareTripleChecker+Valid, 4.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 715 mSDsluCounter, 3199 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2469 mSDsCounter, 191 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1293 IncrementalHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 191 mSolverCounterUnsat, 730 mSDtfsCounter, 1293 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2798 GetRequests, 2587 SyntacticMatches, 2 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1466 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=201occurred in iteration=7, InterpolantAutomatonStates: 85, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 404 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 24.2s InterpolantComputationTime, 1393 NumberOfCodeBlocks, 1393 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2766 ConstructedInterpolants, 34 QuantifiedInterpolants, 14421 SizeOfPredicates, 149 NumberOfNonLiveVariables, 2160 ConjunctsInSsa, 165 ConjunctsInUnsatCore, 20 InterpolantComputations, 12 PerfectInterpolantSequences, 17958/18476 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 94]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 20]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (((((((((((((((isInitial == \old(isInitial)) && (var_1_1 == \old(var_1_1))) && (var_1_3 == \old(var_1_3))) && (var_1_6 == \old(var_1_6))) && (var_1_7 == \old(var_1_7))) && (var_1_8 == \old(var_1_8))) && (var_1_9 == \old(var_1_9))) && (var_1_10 == \old(var_1_10))) && (var_1_11 == \old(var_1_11))) && (var_1_12 == \old(var_1_12))) && (var_1_13 == \old(var_1_13))) && (var_1_14 == \old(var_1_14))) && (var_1_16 == \old(var_1_16))) && (last_1_var_1_6 == \old(last_1_var_1_6))) && (last_1_var_1_10 == \old(last_1_var_1_10))) RESULT: Ultimate proved your program to be correct! [2024-11-02 22:06:05,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...