/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-52.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 01:29:45,501 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 01:29:45,561 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 01:29:45,564 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 01:29:45,566 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 01:29:45,589 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 01:29:45,589 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 01:29:45,590 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 01:29:45,590 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 01:29:45,590 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 01:29:45,590 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 01:29:45,591 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 01:29:45,591 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 01:29:45,594 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 01:29:45,594 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 01:29:45,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 01:29:45,594 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 01:29:45,594 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 01:29:45,594 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 01:29:45,594 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 01:29:45,595 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 01:29:45,595 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 01:29:45,595 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 01:29:45,595 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 01:29:45,597 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 01:29:45,597 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 01:29:45,597 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 01:29:45,597 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 01:29:45,597 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 01:29:45,598 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 01:29:45,598 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 01:29:45,598 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 01:29:45,598 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 01:29:45,598 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 01:29:45,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 01:29:45,598 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 01:29:45,599 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 01:29:45,599 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 01:29:45,599 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 01:29:45,599 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 01:29:45,599 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 01:29:45,600 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 01:29:45,600 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 01:29:45,600 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 01:29:45,600 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 01:29:45,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 01:29:45,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 01:29:45,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 01:29:45,768 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 01:29:45,768 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 01:29:45,769 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-52.i [2024-11-03 01:29:46,915 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 01:29:47,100 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 01:29:47,101 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-52.i [2024-11-03 01:29:47,107 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/037f68dfa/abf837ad6be341019d0ba1a84767be88/FLAG5ce96067c [2024-11-03 01:29:47,520 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/037f68dfa/abf837ad6be341019d0ba1a84767be88 [2024-11-03 01:29:47,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 01:29:47,526 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 01:29:47,527 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 01:29:47,528 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 01:29:47,531 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 01:29:47,531 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:29:47" (1/1) ... [2024-11-03 01:29:47,532 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28ddbb25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:47, skipping insertion in model container [2024-11-03 01:29:47,532 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:29:47" (1/1) ... [2024-11-03 01:29:47,557 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 01:29:47,673 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-52.i[915,928] [2024-11-03 01:29:47,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 01:29:47,708 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 01:29:47,718 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-52.i[915,928] [2024-11-03 01:29:47,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 01:29:47,744 INFO L204 MainTranslator]: Completed translation [2024-11-03 01:29:47,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:47 WrapperNode [2024-11-03 01:29:47,746 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 01:29:47,747 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 01:29:47,747 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 01:29:47,747 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 01:29:47,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:47" (1/1) ... [2024-11-03 01:29:47,761 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:47" (1/1) ... [2024-11-03 01:29:47,775 INFO L138 Inliner]: procedures = 27, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 107 [2024-11-03 01:29:47,775 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 01:29:47,776 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 01:29:47,776 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 01:29:47,776 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 01:29:47,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:47" (1/1) ... [2024-11-03 01:29:47,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:47" (1/1) ... [2024-11-03 01:29:47,788 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:47" (1/1) ... [2024-11-03 01:29:47,801 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 01:29:47,801 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:47" (1/1) ... [2024-11-03 01:29:47,801 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:47" (1/1) ... [2024-11-03 01:29:47,809 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:47" (1/1) ... [2024-11-03 01:29:47,812 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:47" (1/1) ... [2024-11-03 01:29:47,813 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:47" (1/1) ... [2024-11-03 01:29:47,814 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:47" (1/1) ... [2024-11-03 01:29:47,816 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 01:29:47,816 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 01:29:47,816 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 01:29:47,816 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 01:29:47,817 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:47" (1/1) ... [2024-11-03 01:29:47,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 01:29:47,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 01:29:47,840 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 01:29:47,843 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 01:29:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 01:29:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 01:29:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 01:29:47,862 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 01:29:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 01:29:47,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 01:29:47,930 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 01:29:47,932 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 01:29:48,131 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-03 01:29:48,132 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 01:29:48,144 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 01:29:48,144 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 01:29:48,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:29:48 BoogieIcfgContainer [2024-11-03 01:29:48,145 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 01:29:48,149 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 01:29:48,150 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 01:29:48,152 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 01:29:48,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:29:47" (1/3) ... [2024-11-03 01:29:48,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f4f7852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:29:48, skipping insertion in model container [2024-11-03 01:29:48,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:47" (2/3) ... [2024-11-03 01:29:48,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f4f7852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:29:48, skipping insertion in model container [2024-11-03 01:29:48,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:29:48" (3/3) ... [2024-11-03 01:29:48,155 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-52.i [2024-11-03 01:29:48,169 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 01:29:48,170 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 01:29:48,221 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 01:29:48,226 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;@5bf10cbd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 01:29:48,226 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 01:29:48,229 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 32 states have internal predecessors, (40), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-03 01:29:48,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-03 01:29:48,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:29:48,238 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:48,238 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:29:48,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:29:48,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1915705130, now seen corresponding path program 1 times [2024-11-03 01:29:48,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:29:48,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964996359] [2024-11-03 01:29:48,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:29:48,249 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:29:48,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:29:48,250 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 01:29:48,251 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 01:29:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:29:48,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-03 01:29:48,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:29:48,816 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 317 proven. 21 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2024-11-03 01:29:48,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:29:49,085 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 30 proven. 21 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-11-03 01:29:49,086 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:29:49,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964996359] [2024-11-03 01:29:49,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [964996359] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 01:29:49,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 01:29:49,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-03 01:29:49,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518794109] [2024-11-03 01:29:49,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 01:29:49,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-03 01:29:49,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:29:49,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-03 01:29:49,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-03 01:29:49,115 INFO L87 Difference]: Start difference. First operand has 52 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 32 states have internal predecessors, (40), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-03 01:29:49,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:29:49,919 INFO L93 Difference]: Finished difference Result 195 states and 347 transitions. [2024-11-03 01:29:49,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-03 01:29:49,922 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 113 [2024-11-03 01:29:49,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:29:49,928 INFO L225 Difference]: With dead ends: 195 [2024-11-03 01:29:49,929 INFO L226 Difference]: Without dead ends: 146 [2024-11-03 01:29:49,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2024-11-03 01:29:49,934 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 101 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 01:29:49,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 289 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 01:29:49,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-03 01:29:49,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 55. [2024-11-03 01:29:49,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-03 01:29:49,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 76 transitions. [2024-11-03 01:29:49,982 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 76 transitions. Word has length 113 [2024-11-03 01:29:49,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:29:49,983 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 76 transitions. [2024-11-03 01:29:49,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-03 01:29:49,983 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 76 transitions. [2024-11-03 01:29:49,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-03 01:29:49,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:29:49,988 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:49,993 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 01:29:50,189 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 01:29:50,189 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:29:50,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:29:50,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1106358504, now seen corresponding path program 1 times [2024-11-03 01:29:50,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:29:50,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942454397] [2024-11-03 01:29:50,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:29:50,191 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:29:50,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:29:50,193 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 01:29:50,194 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 01:29:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:29:50,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-03 01:29:50,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:29:58,265 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-03 01:29:58,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:30:09,929 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-03 01:30:09,929 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:30:09,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942454397] [2024-11-03 01:30:09,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1942454397] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:30:09,930 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:30:09,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2024-11-03 01:30:09,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269229473] [2024-11-03 01:30:09,930 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:30:09,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-03 01:30:09,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:30:09,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-03 01:30:09,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-03 01:30:09,932 INFO L87 Difference]: Start difference. First operand 55 states and 76 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-03 01:30:11,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:30:11,308 INFO L93 Difference]: Finished difference Result 100 states and 126 transitions. [2024-11-03 01:30:11,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-03 01:30:11,309 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 113 [2024-11-03 01:30:11,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:30:11,311 INFO L225 Difference]: With dead ends: 100 [2024-11-03 01:30:11,311 INFO L226 Difference]: Without dead ends: 98 [2024-11-03 01:30:11,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2024-11-03 01:30:11,312 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 77 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-03 01:30:11,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 409 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-03 01:30:11,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-03 01:30:11,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 58. [2024-11-03 01:30:11,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-03 01:30:11,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 79 transitions. [2024-11-03 01:30:11,327 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 79 transitions. Word has length 113 [2024-11-03 01:30:11,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:30:11,327 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 79 transitions. [2024-11-03 01:30:11,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-03 01:30:11,327 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 79 transitions. [2024-11-03 01:30:11,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-03 01:30:11,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:30:11,329 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:11,342 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 01:30:11,529 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 01:30:11,530 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:30:11,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:30:11,530 INFO L85 PathProgramCache]: Analyzing trace with hash 508969851, now seen corresponding path program 1 times [2024-11-03 01:30:11,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:30:11,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353292109] [2024-11-03 01:30:11,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:30:11,531 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:30:11,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:30:11,532 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 01:30:11,533 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 01:30:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:30:11,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-03 01:30:11,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:30:17,679 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-03 01:30:17,680 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:30:37,007 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-03 01:30:37,008 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:30:37,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353292109] [2024-11-03 01:30:37,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [353292109] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:30:37,008 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:30:37,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2024-11-03 01:30:37,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111976070] [2024-11-03 01:30:37,008 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:30:37,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-03 01:30:37,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:30:37,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-03 01:30:37,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-03 01:30:37,010 INFO L87 Difference]: Start difference. First operand 58 states and 79 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-03 01:30:39,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:30:39,832 INFO L93 Difference]: Finished difference Result 106 states and 132 transitions. [2024-11-03 01:30:39,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-03 01:30:39,833 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 114 [2024-11-03 01:30:39,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:30:39,834 INFO L225 Difference]: With dead ends: 106 [2024-11-03 01:30:39,834 INFO L226 Difference]: Without dead ends: 104 [2024-11-03 01:30:39,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-11-03 01:30:39,835 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 77 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-03 01:30:39,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 456 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-03 01:30:39,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-03 01:30:39,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 59. [2024-11-03 01:30:39,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 38 states have internal predecessors, (45), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-03 01:30:39,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 81 transitions. [2024-11-03 01:30:39,844 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 81 transitions. Word has length 114 [2024-11-03 01:30:39,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:30:39,845 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 81 transitions. [2024-11-03 01:30:39,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-03 01:30:39,845 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 81 transitions. [2024-11-03 01:30:39,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-03 01:30:39,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:30:39,847 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:39,852 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 01:30:40,047 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 01:30:40,048 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:30:40,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:30:40,049 INFO L85 PathProgramCache]: Analyzing trace with hash 507122809, now seen corresponding path program 1 times [2024-11-03 01:30:40,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:30:40,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289540611] [2024-11-03 01:30:40,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:30:40,049 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:30:40,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:30:40,050 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 01:30:40,051 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 01:30:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:30:40,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-03 01:30:40,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:30:43,478 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-03 01:30:43,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:31:08,721 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-03 01:31:08,721 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:31:08,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289540611] [2024-11-03 01:31:08,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [289540611] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:31:08,721 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:31:08,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2024-11-03 01:31:08,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272331470] [2024-11-03 01:31:08,722 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:31:08,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-03 01:31:08,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:31:08,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-03 01:31:08,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-11-03 01:31:08,723 INFO L87 Difference]: Start difference. First operand 59 states and 81 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-03 01:31:16,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-03 01:31:30,041 WARN L286 SmtUtils]: Spent 13.63s on a formula simplification. DAG size of input: 188 DAG size of output: 188 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)