/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 bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-65.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 13:30:40,716 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 13:30:40,781 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 13:30:40,784 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 13:30:40,786 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 13:30:40,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 13:30:40,805 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 13:30:40,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 13:30:40,806 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 13:30:40,806 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 13:30:40,807 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 13:30:40,807 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 13:30:40,807 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 13:30:40,808 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 13:30:40,808 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 13:30:40,810 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 13:30:40,811 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 13:30:40,812 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 13:30:40,812 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 13:30:40,812 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 13:30:40,812 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 13:30:40,815 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 13:30:40,815 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 13:30:40,815 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 13:30:40,815 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 13:30:40,815 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 13:30:40,815 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 13:30:40,816 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 13:30:40,816 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 13:30:40,816 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 13:30:40,816 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 13:30:40,816 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 13:30:40,816 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 13:30:40,817 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 13:30:40,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:30:40,817 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 13:30:40,817 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 13:30:40,817 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 13:30:40,817 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 13:30:40,818 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 13:30:40,818 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 13:30:40,818 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 13:30:40,818 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 13:30:40,818 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 13:30:40,818 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 13:30:40,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 13:30:41,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 13:30:41,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 13:30:41,023 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 13:30:41,023 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 13:30:41,025 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-65.i [2024-11-03 13:30:42,209 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 13:30:42,402 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 13:30:42,402 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-65.i [2024-11-03 13:30:42,416 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd5269f99/a725cc708e2e45e9adce48634e6a76d1/FLAG047c2d6ff [2024-11-03 13:30:42,786 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd5269f99/a725cc708e2e45e9adce48634e6a76d1 [2024-11-03 13:30:42,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 13:30:42,789 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 13:30:42,791 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 13:30:42,791 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 13:30:42,794 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 13:30:42,795 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:30:42" (1/1) ... [2024-11-03 13:30:42,796 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68d14d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:42, skipping insertion in model container [2024-11-03 13:30:42,796 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:30:42" (1/1) ... [2024-11-03 13:30:42,816 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 13:30:42,927 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_amount50_file-65.i[915,928] [2024-11-03 13:30:42,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:30:42,981 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 13:30:42,990 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_amount50_file-65.i[915,928] [2024-11-03 13:30:43,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:30:43,026 INFO L204 MainTranslator]: Completed translation [2024-11-03 13:30:43,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:43 WrapperNode [2024-11-03 13:30:43,026 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 13:30:43,027 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 13:30:43,027 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 13:30:43,027 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 13:30:43,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:43" (1/1) ... [2024-11-03 13:30:43,041 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:43" (1/1) ... [2024-11-03 13:30:43,066 INFO L138 Inliner]: procedures = 27, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 137 [2024-11-03 13:30:43,067 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 13:30:43,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 13:30:43,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 13:30:43,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 13:30:43,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:43" (1/1) ... [2024-11-03 13:30:43,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:43" (1/1) ... [2024-11-03 13:30:43,081 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:43" (1/1) ... [2024-11-03 13:30:43,091 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 13:30:43,092 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:43" (1/1) ... [2024-11-03 13:30:43,092 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:43" (1/1) ... [2024-11-03 13:30:43,098 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:43" (1/1) ... [2024-11-03 13:30:43,100 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:43" (1/1) ... [2024-11-03 13:30:43,102 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:43" (1/1) ... [2024-11-03 13:30:43,103 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:43" (1/1) ... [2024-11-03 13:30:43,106 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 13:30:43,106 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 13:30:43,106 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 13:30:43,106 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 13:30:43,107 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:43" (1/1) ... [2024-11-03 13:30:43,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:30:43,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 13:30:43,136 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 13:30:43,137 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 13:30:43,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 13:30:43,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 13:30:43,157 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 13:30:43,158 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 13:30:43,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 13:30:43,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 13:30:43,220 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 13:30:43,222 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 13:30:44,164 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-03 13:30:44,164 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 13:30:44,181 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 13:30:44,181 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 13:30:44,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:30:44 BoogieIcfgContainer [2024-11-03 13:30:44,181 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 13:30:44,183 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 13:30:44,183 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 13:30:44,186 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 13:30:44,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:30:42" (1/3) ... [2024-11-03 13:30:44,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eeaf3c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:30:44, skipping insertion in model container [2024-11-03 13:30:44,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:43" (2/3) ... [2024-11-03 13:30:44,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eeaf3c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:30:44, skipping insertion in model container [2024-11-03 13:30:44,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:30:44" (3/3) ... [2024-11-03 13:30:44,190 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-65.i [2024-11-03 13:30:44,201 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 13:30:44,202 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 13:30:44,251 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 13:30:44,255 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;@41ad5895, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 13:30:44,255 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 13:30:44,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 38 states have internal predecessors, (50), 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 13:30:44,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-03 13:30:44,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:30:44,266 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, 1, 1, 1] [2024-11-03 13:30:44,267 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:30:44,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:30:44,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1696586276, now seen corresponding path program 1 times [2024-11-03 13:30:44,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:30:44,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66009633] [2024-11-03 13:30:44,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:30:44,278 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:30:44,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:30:44,280 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:30:44,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 13:30:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:30:44,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 13:30:44,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:30:44,433 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-11-03 13:30:44,434 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:30:44,574 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-11-03 13:30:44,574 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:30:44,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66009633] [2024-11-03 13:30:44,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [66009633] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:30:44,575 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:30:44,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 13:30:44,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883751170] [2024-11-03 13:30:44,578 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:30:44,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 13:30:44,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:30:44,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 13:30:44,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 13:30:44,604 INFO L87 Difference]: Start difference. First operand has 58 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 38 states have internal predecessors, (50), 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 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-03 13:30:44,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:30:44,627 INFO L93 Difference]: Finished difference Result 109 states and 184 transitions. [2024-11-03 13:30:44,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 13:30:44,632 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 117 [2024-11-03 13:30:44,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:30:44,638 INFO L225 Difference]: With dead ends: 109 [2024-11-03 13:30:44,638 INFO L226 Difference]: Without dead ends: 54 [2024-11-03 13:30:44,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 13:30:44,645 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:30:44,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:30:44,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-03 13:30:44,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-03 13:30:44,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 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 13:30:44,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 78 transitions. [2024-11-03 13:30:44,678 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 78 transitions. Word has length 117 [2024-11-03 13:30:44,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:30:44,678 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 78 transitions. [2024-11-03 13:30:44,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-03 13:30:44,679 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 78 transitions. [2024-11-03 13:30:44,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-03 13:30:44,682 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:30:44,682 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, 1, 1, 1] [2024-11-03 13:30:44,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 13:30:44,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:30:44,885 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:30:44,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:30:44,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1803614376, now seen corresponding path program 1 times [2024-11-03 13:30:44,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:30:44,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517064356] [2024-11-03 13:30:44,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:30:44,886 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:30:44,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:30:44,887 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:30:44,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 13:30:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:30:45,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-03 13:30:45,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:30:46,208 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 13:30:46,208 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:30:46,768 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 13:30:46,769 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:30:46,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517064356] [2024-11-03 13:30:46,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1517064356] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:30:46,769 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:30:46,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2024-11-03 13:30:46,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286101894] [2024-11-03 13:30:46,770 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:30:46,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:30:46,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:30:46,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:30:46,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:30:46,772 INFO L87 Difference]: Start difference. First operand 54 states and 78 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-03 13:30:48,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:30:48,821 INFO L93 Difference]: Finished difference Result 174 states and 252 transitions. [2024-11-03 13:30:48,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 13:30:48,834 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 117 [2024-11-03 13:30:48,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:30:48,836 INFO L225 Difference]: With dead ends: 174 [2024-11-03 13:30:48,836 INFO L226 Difference]: Without dead ends: 123 [2024-11-03 13:30:48,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-03 13:30:48,838 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 90 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:30:48,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 281 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-03 13:30:48,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-03 13:30:48,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 89. [2024-11-03 13:30:48,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 50 states have (on average 1.16) internal successors, (58), 50 states have internal predecessors, (58), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-03 13:30:48,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 130 transitions. [2024-11-03 13:30:48,860 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 130 transitions. Word has length 117 [2024-11-03 13:30:48,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:30:48,861 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 130 transitions. [2024-11-03 13:30:48,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-03 13:30:48,861 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 130 transitions. [2024-11-03 13:30:48,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-03 13:30:48,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:30:48,863 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, 1, 1, 1] [2024-11-03 13:30:48,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Forceful destruction successful, exit code 0 [2024-11-03 13:30:49,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:30:49,064 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:30:49,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:30:49,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1545448938, now seen corresponding path program 1 times [2024-11-03 13:30:49,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:30:49,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511752481] [2024-11-03 13:30:49,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:30:49,065 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:30:49,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:30:49,066 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:30:49,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 13:30:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:30:49,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 13:30:49,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:30:49,382 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 293 proven. 33 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2024-11-03 13:30:49,382 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:30:49,624 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 18 proven. 33 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-11-03 13:30:49,624 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:30:49,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511752481] [2024-11-03 13:30:49,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1511752481] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:30:49,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:30:49,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2024-11-03 13:30:49,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104474524] [2024-11-03 13:30:49,625 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:30:49,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-03 13:30:49,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:30:49,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-03 13:30:49,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-03 13:30:49,628 INFO L87 Difference]: Start difference. First operand 89 states and 130 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-03 13:30:52,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:30:52,021 INFO L93 Difference]: Finished difference Result 210 states and 285 transitions. [2024-11-03 13:30:52,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-03 13:30:52,022 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 117 [2024-11-03 13:30:52,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:30:52,023 INFO L225 Difference]: With dead ends: 210 [2024-11-03 13:30:52,024 INFO L226 Difference]: Without dead ends: 159 [2024-11-03 13:30:52,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=331, Invalid=725, Unknown=0, NotChecked=0, Total=1056 [2024-11-03 13:30:52,025 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 279 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:30:52,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 239 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-03 13:30:52,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-03 13:30:52,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 125. [2024-11-03 13:30:52,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 76 states have (on average 1.118421052631579) internal successors, (85), 77 states have internal predecessors, (85), 42 states have call successors, (42), 6 states have call predecessors, (42), 6 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-03 13:30:52,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 169 transitions. [2024-11-03 13:30:52,049 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 169 transitions. Word has length 117 [2024-11-03 13:30:52,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:30:52,049 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 169 transitions. [2024-11-03 13:30:52,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-03 13:30:52,050 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 169 transitions. [2024-11-03 13:30:52,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-03 13:30:52,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:30:52,051 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, 1, 1, 1, 1] [2024-11-03 13:30:52,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-03 13:30:52,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:30:52,257 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:30:52,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:30:52,258 INFO L85 PathProgramCache]: Analyzing trace with hash 430563585, now seen corresponding path program 1 times [2024-11-03 13:30:52,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:30:52,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759794240] [2024-11-03 13:30:52,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:30:52,258 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:30:52,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:30:52,260 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:30:52,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 13:30:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:30:52,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-03 13:30:52,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:31:28,137 WARN L286 SmtUtils]: Spent 13.69s on a formula simplification that was a NOOP. DAG size: 63 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-03 13:32:02,781 WARN L286 SmtUtils]: Spent 14.81s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)