/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 'cvc4 --incremental --print-success --lang smt' -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 [2024-11-03 01:27:55,703 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 01:27:55,769 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 01:27:55,774 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 01:27:55,774 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 01:27:55,795 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 01:27:55,796 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 01:27:55,797 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 01:27:55,797 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 01:27:55,800 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 01:27:55,800 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 01:27:55,800 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 01:27:55,800 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 01:27:55,800 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 01:27:55,801 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 01:27:55,801 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 01:27:55,801 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 01:27:55,801 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 01:27:55,801 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 01:27:55,802 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 01:27:55,802 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 01:27:55,804 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 01:27:55,804 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 01:27:55,804 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 01:27:55,804 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 01:27:55,804 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 01:27:55,805 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 01:27:55,805 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 01:27:55,805 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 01:27:55,805 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 01:27:55,805 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 01:27:55,805 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 01:27:55,805 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 01:27:55,806 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 01:27:55,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 01:27:55,806 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 01:27:55,806 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 01:27:55,806 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 01:27:55,806 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 01:27:55,807 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 01:27:55,807 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 01:27:55,808 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 01:27:55,808 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 01:27:55,808 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 01:27:55,808 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 01:27:55,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 01:27:56,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 01:27:56,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 01:27:56,014 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 01:27:56,015 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 01:27:56,016 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-39.i [2024-11-03 01:27:57,335 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 01:27:57,477 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 01:27:57,477 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-39.i [2024-11-03 01:27:57,483 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcb7859d3/c9ae77318b094b248f44ae519ec1a00a/FLAGc46c33f66 [2024-11-03 01:27:57,889 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcb7859d3/c9ae77318b094b248f44ae519ec1a00a [2024-11-03 01:27:57,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 01:27:57,892 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 01:27:57,893 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 01:27:57,893 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 01:27:57,899 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 01:27:57,899 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:27:57" (1/1) ... [2024-11-03 01:27:57,900 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a1834c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:57, skipping insertion in model container [2024-11-03 01:27:57,900 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:27:57" (1/1) ... [2024-11-03 01:27:57,916 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 01:27:58,033 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] [2024-11-03 01:27:58,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 01:27:58,068 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 01:27:58,077 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] [2024-11-03 01:27:58,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 01:27:58,108 INFO L204 MainTranslator]: Completed translation [2024-11-03 01:27:58,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:58 WrapperNode [2024-11-03 01:27:58,109 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 01:27:58,110 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 01:27:58,110 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 01:27:58,110 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 01:27:58,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:58" (1/1) ... [2024-11-03 01:27:58,122 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:58" (1/1) ... [2024-11-03 01:27:58,137 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 100 [2024-11-03 01:27:58,137 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 01:27:58,138 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 01:27:58,138 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 01:27:58,138 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 01:27:58,149 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:58" (1/1) ... [2024-11-03 01:27:58,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:58" (1/1) ... [2024-11-03 01:27:58,152 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:58" (1/1) ... [2024-11-03 01:27:58,161 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]. [2024-11-03 01:27:58,162 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:58" (1/1) ... [2024-11-03 01:27:58,162 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:58" (1/1) ... [2024-11-03 01:27:58,166 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:58" (1/1) ... [2024-11-03 01:27:58,169 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:58" (1/1) ... [2024-11-03 01:27:58,170 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:58" (1/1) ... [2024-11-03 01:27:58,171 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:58" (1/1) ... [2024-11-03 01:27:58,173 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 01:27:58,174 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 01:27:58,174 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 01:27:58,174 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 01:27:58,174 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:58" (1/1) ... [2024-11-03 01:27:58,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 01:27:58,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 01:27:58,199 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) [2024-11-03 01:27:58,201 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 [2024-11-03 01:27:58,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 01:27:58,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 01:27:58,222 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 01:27:58,222 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 01:27:58,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 01:27:58,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 01:27:58,288 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 01:27:58,290 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 01:27:58,588 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-03 01:27:58,588 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 01:27:58,601 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 01:27:58,601 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 01:27:58,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:27:58 BoogieIcfgContainer [2024-11-03 01:27:58,601 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 01:27:58,604 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 01:27:58,604 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 01:27:58,607 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 01:27:58,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:27:57" (1/3) ... [2024-11-03 01:27:58,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764b8915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:27:58, skipping insertion in model container [2024-11-03 01:27:58,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:58" (2/3) ... [2024-11-03 01:27:58,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764b8915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:27:58, skipping insertion in model container [2024-11-03 01:27:58,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:27:58" (3/3) ... [2024-11-03 01:27:58,609 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-39.i [2024-11-03 01:27:58,622 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 01:27:58,622 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 01:27:58,678 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 01:27:58,683 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;@7d960012, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 01:27:58,684 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 01:27:58,687 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) [2024-11-03 01:27:58,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-03 01:27:58,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:27:58,695 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] [2024-11-03 01:27:58,696 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:27:58,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:27:58,700 INFO L85 PathProgramCache]: Analyzing trace with hash 705531536, now seen corresponding path program 1 times [2024-11-03 01:27:58,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:27:58,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539865136] [2024-11-03 01:27:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:27:58,710 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:27:58,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:27:58,714 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:27:58,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 01:27:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:27:59,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 01:27:59,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:27:59,309 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-03 01:27:59,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:27:59,525 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-03 01:27:59,526 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:27:59,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539865136] [2024-11-03 01:27:59,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1539865136] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:27:59,526 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:27:59,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2024-11-03 01:27:59,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202081601] [2024-11-03 01:27:59,529 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:27:59,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 01:27:59,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:27:59,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 01:27:59,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-03 01:27:59,557 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) [2024-11-03 01:28:00,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:28:00,056 INFO L93 Difference]: Finished difference Result 195 states and 345 transitions. [2024-11-03 01:28:00,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 01:28:00,059 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 [2024-11-03 01:28:00,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:28:00,068 INFO L225 Difference]: With dead ends: 195 [2024-11-03 01:28:00,068 INFO L226 Difference]: Without dead ends: 151 [2024-11-03 01:28:00,072 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 [2024-11-03 01:28:00,075 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 [2024-11-03 01:28:00,076 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] [2024-11-03 01:28:00,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-03 01:28:00,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 81. [2024-11-03 01:28:00,134 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) [2024-11-03 01:28:00,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 115 transitions. [2024-11-03 01:28:00,138 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 115 transitions. Word has length 87 [2024-11-03 01:28:00,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:28:00,138 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 115 transitions. [2024-11-03 01:28:00,138 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) [2024-11-03 01:28:00,139 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 115 transitions. [2024-11-03 01:28:00,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-03 01:28:00,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:28:00,141 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] [2024-11-03 01:28:00,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-03 01:28:00,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:28:00,342 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:28:00,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:28:00,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1626825182, now seen corresponding path program 1 times [2024-11-03 01:28:00,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:28:00,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065162053] [2024-11-03 01:28:00,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:28:00,343 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:28:00,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:28:00,344 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:28:00,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 01:28:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:28:00,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-03 01:28:00,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:28:02,459 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 143 proven. 12 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-11-03 01:28:02,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:28:04,466 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-03 01:28:04,467 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:28:04,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065162053] [2024-11-03 01:28:04,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1065162053] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 01:28:04,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 01:28:04,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 22 [2024-11-03 01:28:04,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138388647] [2024-11-03 01:28:04,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 01:28:04,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-03 01:28:04,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:28:04,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-03 01:28:04,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2024-11-03 01:28:04,470 INFO L87 Difference]: Start difference. First operand 81 states and 115 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) [2024-11-03 01:28:05,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:28:05,421 INFO L93 Difference]: Finished difference Result 116 states and 157 transitions. [2024-11-03 01:28:05,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-03 01:28:05,422 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 [2024-11-03 01:28:05,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:28:05,423 INFO L225 Difference]: With dead ends: 116 [2024-11-03 01:28:05,423 INFO L226 Difference]: Without dead ends: 114 [2024-11-03 01:28:05,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2024-11-03 01:28:05,425 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 45 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 01:28:05,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 290 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 01:28:05,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-03 01:28:05,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 97. [2024-11-03 01:28:05,438 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) [2024-11-03 01:28:05,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2024-11-03 01:28:05,439 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 88 [2024-11-03 01:28:05,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:28:05,440 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2024-11-03 01:28:05,440 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) [2024-11-03 01:28:05,440 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2024-11-03 01:28:05,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-03 01:28:05,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:28:05,441 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] [2024-11-03 01:28:05,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-03 01:28:05,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:28:05,642 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:28:05,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:28:05,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1628672224, now seen corresponding path program 1 times [2024-11-03 01:28:05,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:28:05,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397969383] [2024-11-03 01:28:05,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:28:05,647 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:28:05,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:28:05,648 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:28:05,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 01:28:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:28:06,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-03 01:28:06,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:28:07,657 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-03 01:28:07,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:28:08,169 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-03 01:28:08,169 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:28:08,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397969383] [2024-11-03 01:28:08,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [397969383] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:28:08,170 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:28:08,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 12 [2024-11-03 01:28:08,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339936827] [2024-11-03 01:28:08,170 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:28:08,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-03 01:28:08,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:28:08,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-03 01:28:08,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-03 01:28:08,175 INFO L87 Difference]: Start difference. First operand 97 states and 136 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 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) [2024-11-03 01:28:08,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:28:08,612 INFO L93 Difference]: Finished difference Result 114 states and 154 transitions. [2024-11-03 01:28:08,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-03 01:28:08,613 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 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 [2024-11-03 01:28:08,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:28:08,614 INFO L225 Difference]: With dead ends: 114 [2024-11-03 01:28:08,614 INFO L226 Difference]: Without dead ends: 112 [2024-11-03 01:28:08,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-11-03 01:28:08,615 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 11 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 01:28:08,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 493 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 01:28:08,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-03 01:28:08,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 97. [2024-11-03 01:28:08,625 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) [2024-11-03 01:28:08,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2024-11-03 01:28:08,626 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 88 [2024-11-03 01:28:08,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:28:08,626 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2024-11-03 01:28:08,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 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) [2024-11-03 01:28:08,627 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2024-11-03 01:28:08,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-03 01:28:08,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:28:08,628 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] [2024-11-03 01:28:08,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-03 01:28:08,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:28:08,829 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:28:08,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:28:08,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2119667321, now seen corresponding path program 1 times [2024-11-03 01:28:08,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:28:08,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117356424] [2024-11-03 01:28:08,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:28:08,830 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:28:08,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:28:08,832 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:28:08,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 01:28:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:28:08,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 01:28:08,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:28:09,058 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-03 01:28:09,058 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:28:09,121 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-03 01:28:09,121 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:28:09,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117356424] [2024-11-03 01:28:09,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1117356424] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:28:09,122 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:28:09,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 4 [2024-11-03 01:28:09,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681460653] [2024-11-03 01:28:09,122 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:28:09,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 01:28:09,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:28:09,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 01:28:09,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 01:28:09,124 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) [2024-11-03 01:28:09,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:28:09,190 INFO L93 Difference]: Finished difference Result 232 states and 325 transitions. [2024-11-03 01:28:09,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 01:28:09,191 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 [2024-11-03 01:28:09,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:28:09,193 INFO L225 Difference]: With dead ends: 232 [2024-11-03 01:28:09,193 INFO L226 Difference]: Without dead ends: 138 [2024-11-03 01:28:09,194 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 [2024-11-03 01:28:09,194 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 46 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 01:28:09,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 169 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 01:28:09,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-03 01:28:09,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2024-11-03 01:28:09,212 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) [2024-11-03 01:28:09,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 187 transitions. [2024-11-03 01:28:09,213 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 187 transitions. Word has length 88 [2024-11-03 01:28:09,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:28:09,214 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 187 transitions. [2024-11-03 01:28:09,214 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) [2024-11-03 01:28:09,214 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 187 transitions. [2024-11-03 01:28:09,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-03 01:28:09,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:28:09,217 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] [2024-11-03 01:28:09,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-03 01:28:09,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:28:09,418 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:28:09,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:28:09,418 INFO L85 PathProgramCache]: Analyzing trace with hash -755537303, now seen corresponding path program 1 times [2024-11-03 01:28:09,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:28:09,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304319879] [2024-11-03 01:28:09,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:28:09,419 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:28:09,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:28:09,421 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:28:09,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-03 01:28:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:28:09,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-03 01:28:09,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:28:11,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 431 proven. 196 refuted. 0 times theorem prover too weak. 704 trivial. 0 not checked. [2024-11-03 01:28:11,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:28:12,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2024-11-03 01:28:12,806 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:28:12,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304319879] [2024-11-03 01:28:12,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [304319879] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 01:28:12,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 01:28:12,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [18] total 25 [2024-11-03 01:28:12,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615804091] [2024-11-03 01:28:12,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 01:28:12,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-03 01:28:12,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:28:12,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-03 01:28:12,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2024-11-03 01:28:12,808 INFO L87 Difference]: Start difference. First operand 134 states and 187 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) [2024-11-03 01:28:13,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:28:13,509 INFO L93 Difference]: Finished difference Result 164 states and 220 transitions. [2024-11-03 01:28:13,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-03 01:28:13,510 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 [2024-11-03 01:28:13,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:28:13,512 INFO L225 Difference]: With dead ends: 164 [2024-11-03 01:28:13,512 INFO L226 Difference]: Without dead ends: 162 [2024-11-03 01:28:13,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2024-11-03 01:28:13,513 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 19 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 01:28:13,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 325 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 01:28:13,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-03 01:28:13,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 139. [2024-11-03 01:28:13,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 96 states have (on average 1.21875) internal successors, (117), 96 states have internal predecessors, (117), 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) [2024-11-03 01:28:13,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 195 transitions. [2024-11-03 01:28:13,539 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 195 transitions. Word has length 173 [2024-11-03 01:28:13,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:28:13,539 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 195 transitions. [2024-11-03 01:28:13,540 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) [2024-11-03 01:28:13,540 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 195 transitions. [2024-11-03 01:28:13,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-03 01:28:13,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:28:13,545 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] [2024-11-03 01:28:13,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-11-03 01:28:13,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:28:13,745 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:28:13,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:28:13,746 INFO L85 PathProgramCache]: Analyzing trace with hash -753690261, now seen corresponding path program 1 times [2024-11-03 01:28:13,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:28:13,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5455043] [2024-11-03 01:28:13,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:28:13,746 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:28:13,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:28:13,747 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:28:13,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-03 01:28:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:28:14,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-03 01:28:14,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:28:16,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 320 proven. 758 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-03 01:28:16,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:28:19,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 204 proven. 109 refuted. 0 times theorem prover too weak. 1018 trivial. 0 not checked. [2024-11-03 01:28:19,160 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:28:19,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5455043] [2024-11-03 01:28:19,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [5455043] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 01:28:19,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 01:28:19,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 23] total 51 [2024-11-03 01:28:19,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034701723] [2024-11-03 01:28:19,161 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 01:28:19,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-03 01:28:19,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:28:19,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-03 01:28:19,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=2060, Unknown=0, NotChecked=0, Total=2550 [2024-11-03 01:28:19,163 INFO L87 Difference]: Start difference. First operand 139 states and 195 transitions. Second operand has 51 states, 50 states have (on average 2.6) internal successors, (130), 48 states have internal predecessors, (130), 13 states have call successors, (52), 8 states have call predecessors, (52), 15 states have return successors, (52), 13 states have call predecessors, (52), 13 states have call successors, (52) [2024-11-03 01:28:26,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:28:26,248 INFO L93 Difference]: Finished difference Result 325 states and 420 transitions. [2024-11-03 01:28:26,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-03 01:28:26,249 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 2.6) internal successors, (130), 48 states have internal predecessors, (130), 13 states have call successors, (52), 8 states have call predecessors, (52), 15 states have return successors, (52), 13 states have call predecessors, (52), 13 states have call successors, (52) Word has length 173 [2024-11-03 01:28:26,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:28:26,251 INFO L225 Difference]: With dead ends: 325 [2024-11-03 01:28:26,251 INFO L226 Difference]: Without dead ends: 323 [2024-11-03 01:28:26,254 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 301 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5034 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=3054, Invalid=10752, Unknown=0, NotChecked=0, Total=13806 [2024-11-03 01:28:26,255 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 900 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 685 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 1948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-03 01:28:26,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 843 Invalid, 2633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [685 Valid, 1948 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-03 01:28:26,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-03 01:28:26,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 232. [2024-11-03 01:28:26,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 156 states have (on average 1.1666666666666667) internal successors, (182), 158 states have internal predecessors, (182), 63 states have call successors, (63), 12 states have call predecessors, (63), 12 states have return successors, (63), 61 states have call predecessors, (63), 63 states have call successors, (63) [2024-11-03 01:28:26,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 308 transitions. [2024-11-03 01:28:26,297 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 308 transitions. Word has length 173 [2024-11-03 01:28:26,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:28:26,297 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 308 transitions. [2024-11-03 01:28:26,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 2.6) internal successors, (130), 48 states have internal predecessors, (130), 13 states have call successors, (52), 8 states have call predecessors, (52), 15 states have return successors, (52), 13 states have call predecessors, (52), 13 states have call successors, (52) [2024-11-03 01:28:26,297 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 308 transitions. [2024-11-03 01:28:26,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-03 01:28:26,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:28:26,300 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:28:26,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2024-11-03 01:28:26,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:28:26,508 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:28:26,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:28:26,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1574671168, now seen corresponding path program 1 times [2024-11-03 01:28:26,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:28:26,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108880326] [2024-11-03 01:28:26,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:28:26,508 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:28:26,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:28:26,510 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:28:26,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-03 01:28:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:28:27,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-03 01:28:27,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:28:29,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3059 backedges. 1536 proven. 431 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2024-11-03 01:28:29,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:28:31,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3059 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2024-11-03 01:28:31,418 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:28:31,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108880326] [2024-11-03 01:28:31,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [108880326] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 01:28:31,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 01:28:31,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [30] total 39 [2024-11-03 01:28:31,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494266874] [2024-11-03 01:28:31,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 01:28:31,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-03 01:28:31,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:28:31,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-03 01:28:31,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1256, Unknown=0, NotChecked=0, Total=1482 [2024-11-03 01:28:31,420 INFO L87 Difference]: Start difference. First operand 232 states and 308 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 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) [2024-11-03 01:28:32,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:28:32,712 INFO L93 Difference]: Finished difference Result 257 states and 334 transitions. [2024-11-03 01:28:32,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-03 01:28:32,713 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 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 258 [2024-11-03 01:28:32,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:28:32,717 INFO L225 Difference]: With dead ends: 257 [2024-11-03 01:28:32,717 INFO L226 Difference]: Without dead ends: 255 [2024-11-03 01:28:32,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=308, Invalid=1762, Unknown=0, NotChecked=0, Total=2070 [2024-11-03 01:28:32,719 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 45 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 01:28:32,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 226 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 01:28:32,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-03 01:28:32,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 224. [2024-11-03 01:28:32,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 148 states have (on average 1.1486486486486487) internal successors, (170), 150 states have internal predecessors, (170), 63 states have call successors, (63), 12 states have call predecessors, (63), 12 states have return successors, (63), 61 states have call predecessors, (63), 63 states have call successors, (63) [2024-11-03 01:28:32,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 296 transitions. [2024-11-03 01:28:32,743 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 296 transitions. Word has length 258 [2024-11-03 01:28:32,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:28:32,744 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 296 transitions. [2024-11-03 01:28:32,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 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) [2024-11-03 01:28:32,744 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 296 transitions. [2024-11-03 01:28:32,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-03 01:28:32,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:28:32,746 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:28:32,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-11-03 01:28:32,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:28:32,947 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:28:32,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:28:32,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1572824126, now seen corresponding path program 1 times [2024-11-03 01:28:32,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:28:32,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364437811] [2024-11-03 01:28:32,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:28:32,948 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:28:32,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:28:32,949 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:28:32,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-03 01:28:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:28:33,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-03 01:28:33,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:28:38,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3059 backedges. 1672 proven. 832 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2024-11-03 01:28:38,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:28:44,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3059 backedges. 406 proven. 109 refuted. 0 times theorem prover too weak. 2544 trivial. 0 not checked. [2024-11-03 01:28:44,821 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:28:44,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364437811] [2024-11-03 01:28:44,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [364437811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 01:28:44,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 01:28:44,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 26] total 62 [2024-11-03 01:28:44,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922100809] [2024-11-03 01:28:44,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 01:28:44,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-03 01:28:44,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:28:44,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-03 01:28:44,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=3081, Unknown=0, NotChecked=0, Total=3782 [2024-11-03 01:28:44,824 INFO L87 Difference]: Start difference. First operand 224 states and 296 transitions. Second operand has 62 states, 61 states have (on average 2.4262295081967213) internal successors, (148), 58 states have internal predecessors, (148), 15 states have call successors, (52), 10 states have call predecessors, (52), 17 states have return successors, (55), 13 states have call predecessors, (55), 15 states have call successors, (55) [2024-11-03 01:29:03,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:29:03,827 INFO L93 Difference]: Finished difference Result 941 states and 1124 transitions. [2024-11-03 01:29:03,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-11-03 01:29:03,828 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.4262295081967213) internal successors, (148), 58 states have internal predecessors, (148), 15 states have call successors, (52), 10 states have call predecessors, (52), 17 states have return successors, (55), 13 states have call predecessors, (55), 15 states have call successors, (55) Word has length 258 [2024-11-03 01:29:03,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:29:03,832 INFO L225 Difference]: With dead ends: 941 [2024-11-03 01:29:03,832 INFO L226 Difference]: Without dead ends: 844 [2024-11-03 01:29:03,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 468 SyntacticMatches, 1 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9516 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=5568, Invalid=25232, Unknown=0, NotChecked=0, Total=30800 [2024-11-03 01:29:03,841 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 760 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 2969 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 3456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 2969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-11-03 01:29:03,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 1179 Invalid, 3456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 2969 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2024-11-03 01:29:03,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2024-11-03 01:29:03,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 593. [2024-11-03 01:29:03,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 401 states have (on average 1.1022443890274314) internal successors, (442), 405 states have internal predecessors, (442), 132 states have call successors, (132), 59 states have call predecessors, (132), 59 states have return successors, (132), 128 states have call predecessors, (132), 132 states have call successors, (132) [2024-11-03 01:29:03,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 706 transitions. [2024-11-03 01:29:03,934 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 706 transitions. Word has length 258 [2024-11-03 01:29:03,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:29:03,934 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 706 transitions. [2024-11-03 01:29:03,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.4262295081967213) internal successors, (148), 58 states have internal predecessors, (148), 15 states have call successors, (52), 10 states have call predecessors, (52), 17 states have return successors, (55), 13 states have call predecessors, (55), 15 states have call successors, (55) [2024-11-03 01:29:03,934 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 706 transitions. [2024-11-03 01:29:03,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-03 01:29:03,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:29:03,937 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:29:03,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2024-11-03 01:29:04,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:29:04,138 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:29:04,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:29:04,138 INFO L85 PathProgramCache]: Analyzing trace with hash 304239104, now seen corresponding path program 2 times [2024-11-03 01:29:04,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:29:04,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905184487] [2024-11-03 01:29:04,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:29:04,139 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:29:04,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:29:04,140 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:29:04,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-03 01:29:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:29:04,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-03 01:29:04,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:29:08,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3059 backedges. 2033 proven. 433 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2024-11-03 01:29:08,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:29:13,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3059 backedges. 340 proven. 193 refuted. 0 times theorem prover too weak. 2526 trivial. 0 not checked. [2024-11-03 01:29:13,501 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:29:13,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905184487] [2024-11-03 01:29:13,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [905184487] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 01:29:13,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 01:29:13,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25] total 51 [2024-11-03 01:29:13,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937450246] [2024-11-03 01:29:13,501 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 01:29:13,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-03 01:29:13,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:29:13,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-03 01:29:13,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1999, Unknown=0, NotChecked=0, Total=2550 [2024-11-03 01:29:13,504 INFO L87 Difference]: Start difference. First operand 593 states and 706 transitions. Second operand has 51 states, 50 states have (on average 2.82) internal successors, (141), 49 states have internal predecessors, (141), 12 states have call successors, (68), 8 states have call predecessors, (68), 14 states have return successors, (69), 10 states have call predecessors, (69), 12 states have call successors, (69) [2024-11-03 01:29:21,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:29:21,960 INFO L93 Difference]: Finished difference Result 1266 states and 1488 transitions. [2024-11-03 01:29:21,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-11-03 01:29:21,961 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 2.82) internal successors, (141), 49 states have internal predecessors, (141), 12 states have call successors, (68), 8 states have call predecessors, (68), 14 states have return successors, (69), 10 states have call predecessors, (69), 12 states have call successors, (69) Word has length 258 [2024-11-03 01:29:21,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:29:21,965 INFO L225 Difference]: With dead ends: 1266 [2024-11-03 01:29:21,965 INFO L226 Difference]: Without dead ends: 912 [2024-11-03 01:29:21,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 469 SyntacticMatches, 3 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5242 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=3560, Invalid=13996, Unknown=0, NotChecked=0, Total=17556 [2024-11-03 01:29:21,968 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 402 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 2366 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 2648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 2366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-03 01:29:21,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 1074 Invalid, 2648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 2366 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-03 01:29:21,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2024-11-03 01:29:22,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 582. [2024-11-03 01:29:22,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 393 states have (on average 1.104325699745547) internal successors, (434), 396 states have internal predecessors, (434), 130 states have call successors, (130), 58 states have call predecessors, (130), 58 states have return successors, (130), 127 states have call predecessors, (130), 130 states have call successors, (130) [2024-11-03 01:29:22,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 694 transitions. [2024-11-03 01:29:22,073 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 694 transitions. Word has length 258 [2024-11-03 01:29:22,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:29:22,073 INFO L471 AbstractCegarLoop]: Abstraction has 582 states and 694 transitions. [2024-11-03 01:29:22,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 2.82) internal successors, (141), 49 states have internal predecessors, (141), 12 states have call successors, (68), 8 states have call predecessors, (68), 14 states have return successors, (69), 10 states have call predecessors, (69), 12 states have call successors, (69) [2024-11-03 01:29:22,074 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 694 transitions. [2024-11-03 01:29:22,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-11-03 01:29:22,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:29:22,076 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:29:22,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2024-11-03 01:29:22,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:29:22,277 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:29:22,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:29:22,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1445389842, now seen corresponding path program 2 times [2024-11-03 01:29:22,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:29:22,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153376362] [2024-11-03 01:29:22,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:29:22,278 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:29:22,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:29:22,280 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:29:22,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-11-03 01:29:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:29:22,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 01:29:22,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:29:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 5494 backedges. 2837 proven. 699 refuted. 0 times theorem prover too weak. 1958 trivial. 0 not checked. [2024-11-03 01:29:22,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:29:22,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5494 backedges. 133 proven. 23 refuted. 0 times theorem prover too weak. 5338 trivial. 0 not checked. [2024-11-03 01:29:22,861 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:29:22,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153376362] [2024-11-03 01:29:22,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [153376362] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 01:29:22,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 01:29:22,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2024-11-03 01:29:22,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823052243] [2024-11-03 01:29:22,862 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 01:29:22,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 01:29:22,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:29:22,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 01:29:22,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 01:29:22,863 INFO L87 Difference]: Start difference. First operand 582 states and 694 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (65), 3 states have call predecessors, (65), 3 states have return successors, (65), 4 states have call predecessors, (65), 4 states have call successors, (65) [2024-11-03 01:29:23,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:29:23,091 INFO L93 Difference]: Finished difference Result 1222 states and 1449 transitions. [2024-11-03 01:29:23,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 01:29:23,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (65), 3 states have call predecessors, (65), 3 states have return successors, (65), 4 states have call predecessors, (65), 4 states have call successors, (65) Word has length 342 [2024-11-03 01:29:23,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:29:23,097 INFO L225 Difference]: With dead ends: 1222 [2024-11-03 01:29:23,097 INFO L226 Difference]: Without dead ends: 720 [2024-11-03 01:29:23,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 679 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-03 01:29:23,099 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 84 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 01:29:23,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 119 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 01:29:23,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2024-11-03 01:29:23,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 690. [2024-11-03 01:29:23,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 464 states have (on average 1.0926724137931034) internal successors, (507), 467 states have internal predecessors, (507), 156 states have call successors, (156), 69 states have call predecessors, (156), 69 states have return successors, (156), 153 states have call predecessors, (156), 156 states have call successors, (156) [2024-11-03 01:29:23,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 819 transitions. [2024-11-03 01:29:23,231 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 819 transitions. Word has length 342 [2024-11-03 01:29:23,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:29:23,231 INFO L471 AbstractCegarLoop]: Abstraction has 690 states and 819 transitions. [2024-11-03 01:29:23,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (65), 3 states have call predecessors, (65), 3 states have return successors, (65), 4 states have call predecessors, (65), 4 states have call successors, (65) [2024-11-03 01:29:23,232 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 819 transitions. [2024-11-03 01:29:23,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2024-11-03 01:29:23,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:29:23,234 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:29:23,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2024-11-03 01:29:23,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:29:23,435 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:29:23,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:29:23,436 INFO L85 PathProgramCache]: Analyzing trace with hash 484398599, now seen corresponding path program 3 times [2024-11-03 01:29:23,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:29:23,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457594719] [2024-11-03 01:29:23,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:29:23,436 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:29:23,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:29:23,438 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:29:23,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-03 01:29:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:29:24,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-03 01:29:24,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:29:26,296 INFO L134 CoverageAnalysis]: Checked inductivity of 5496 backedges. 2857 proven. 963 refuted. 0 times theorem prover too weak. 1676 trivial. 0 not checked. [2024-11-03 01:29:26,296 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:29:27,632 INFO L134 CoverageAnalysis]: Checked inductivity of 5496 backedges. 474 proven. 128 refuted. 0 times theorem prover too weak. 4894 trivial. 0 not checked. [2024-11-03 01:29:27,632 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:29:27,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457594719] [2024-11-03 01:29:27,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1457594719] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 01:29:27,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 01:29:27,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 17] total 35 [2024-11-03 01:29:27,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651399423] [2024-11-03 01:29:27,633 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 01:29:27,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-03 01:29:27,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:29:27,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-03 01:29:27,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=928, Unknown=0, NotChecked=0, Total=1190 [2024-11-03 01:29:27,634 INFO L87 Difference]: Start difference. First operand 690 states and 819 transitions. Second operand has 35 states, 34 states have (on average 3.588235294117647) internal successors, (122), 34 states have internal predecessors, (122), 7 states have call successors, (51), 6 states have call predecessors, (51), 11 states have return successors, (55), 7 states have call predecessors, (55), 7 states have call successors, (55) [2024-11-03 01:29:29,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:29:29,561 INFO L93 Difference]: Finished difference Result 957 states and 1097 transitions. [2024-11-03 01:29:29,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-03 01:29:29,563 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.588235294117647) internal successors, (122), 34 states have internal predecessors, (122), 7 states have call successors, (51), 6 states have call predecessors, (51), 11 states have return successors, (55), 7 states have call predecessors, (55), 7 states have call successors, (55) Word has length 343 [2024-11-03 01:29:29,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:29:29,564 INFO L225 Difference]: With dead ends: 957 [2024-11-03 01:29:29,564 INFO L226 Difference]: Without dead ends: 0 [2024-11-03 01:29:29,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 650 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=737, Invalid=2343, Unknown=0, NotChecked=0, Total=3080 [2024-11-03 01:29:29,566 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 273 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-03 01:29:29,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 704 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-03 01:29:29,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-03 01:29:29,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-03 01:29:29,567 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) [2024-11-03 01:29:29,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-03 01:29:29,567 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 343 [2024-11-03 01:29:29,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:29:29,567 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-03 01:29:29,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.588235294117647) internal successors, (122), 34 states have internal predecessors, (122), 7 states have call successors, (51), 6 states have call predecessors, (51), 11 states have return successors, (55), 7 states have call predecessors, (55), 7 states have call successors, (55) [2024-11-03 01:29:29,568 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-03 01:29:29,568 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-03 01:29:29,570 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-03 01:29:29,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2024-11-03 01:29:29,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:29:29,774 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1] [2024-11-03 01:29:29,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.